WorldWideScience

Sample records for bionics

  1. Organic bionics

    CERN Document Server

    Wallace, Gordon G; Kapsa, Robert MI; Kapsa, Robert M I

    2012-01-01

    The first reference on this emerging interdisciplinary research area at the interface between materials science and biomedicine is written by pioneers in the field, who address the requirements, current status and future challenges. Focusing on inherently conducting polymers, carbon nanotubes and graphene, they adopt a systematic approach, covering all relevant aspects and concepts: synthesis and fabrication, properties, introduction of biological function, components of bionic devices and materials requirements. Established bionic devices, such as the bionic ear are examined, as are emerging

  2. Bionic Nanosystems

    Science.gov (United States)

    Sebastian Mannoor, Manu

    Direct multidimensional integration of functional electronics and mechanical elements with viable biological systems could allow for the creation of bionic systems and devices possessing unique and advanced capabilities. For example, the ability to three dimensionally integrate functional electronic and mechanical components with biological cells and tissue could enable the creation of bionic systems that can have tremendous impact in regenerative medicine, prosthetics, and human-machine interfaces. However, as a consequence of the inherent dichotomy in material properties and limitations of conventional fabrication methods, the attainment of truly seamless integration of electronic and/or mechanical components with biological systems has been challenging. Nanomaterials engineering offers a general route for overcoming these dichotomies, primarily due to the existence of a dimensional compatibility between fundamental biological functional units and abiotic nanomaterial building blocks. One area of compelling interest for bionic systems is in the field of biomedical sensing, where the direct interfacing of nanosensors onto biological tissue or the human body could stimulate exciting opportunities such as on-body health quality monitoring and adaptive threat detection. Further, interfacing of antimicrobial peptide based bioselective probes onto the bionic nanosensors could offer abilities to detect pathogenic bacteria with bio-inspired selectivity. Most compellingly, when paired with additive manufacturing techniques such as 3D printing, these characteristics enable three dimensional integration and merging of a variety of functional materials including electronic, structural and biomaterials with viable biological cells, in the precise anatomic geometries of human organs, to form three dimensionally integrated, multi-functional bionic hybrids and cyborg devices with unique capabilities. In this thesis, we illustrate these approaches using three representative

  3. Bionic prosthesis

    OpenAIRE

    МЫЛЬНИКОВ А.М.

    2015-01-01

    The real achievement in the prosthetics has become artificial joints that function as well as natural joints. Bionic limbs are the most advanced type of prosthesis at the moment. These electronic devices are made from synthetic materials, but the person can manage them using his/her own nervous system through the targeted muscle reinnervation (recovery disturbed innervation of organs and tissues surgically).Principle of operation of bionic prosthesis. After the amputation because of a serious...

  4. Cochlear bionic acoustic metamaterials

    Science.gov (United States)

    Ma, Fuyin; Wu, Jiu Hui; Huang, Meng; Fu, Gang; Bai, Changan

    2014-11-01

    A design of bionic acoustic metamaterial and acoustic functional devices was proposed by employing the mammalian cochlear as a prototype. First, combined with the experimental data in previous literatures, it is pointed out that the cochlear hair cells and stereocilia cluster are a kind of natural biological acoustic metamaterials with the negative stiffness characteristics. Then, to design the acoustic functional devices conveniently in engineering application, a simplified parametric helical structure was proposed to replace actual irregular cochlea for bionic design, and based on the computational results of such a bionic parametric helical structure, it is suggested that the overall cochlear is a local resonant system with the negative dynamic effective mass characteristics. There are many potential applications in the bandboard energy recovery device, cochlear implant, and acoustic black hole.

  5. Coming Soon: The Bionic Man

    Science.gov (United States)

    Woodard, Colin

    2006-01-01

    This article describes the latest advancement in the development of prosthetic arms. Bionic researchers are making significant advances in creating more agile prosthetics that users can control via their own nervous system. The bionic arm, which is still under development, can not only execute complex, thought-controlled movements, but also can…

  6. Significance and Progress of Bionics

    Institute of Scientific and Technical Information of China (English)

    Yongxiang Lu

    2004-01-01

    The four topics are described including the driving force and source of the scientific and technological creation, the definition and history of the bionics, the important significance of bionics in the development of the human beings, and the leading edge and progress of bionics. The appetency of human for the creation is the essential motivity of the innovation in science and technology. Nature and society are the objects for us to cognize and serve, meanwhile, the best teachers for us to learn from them. It is only 5 million years for human's development, but evolution of life has over 3.5 billion years history. Although, copying the creation from the human being is important, however, it has much more potential and opportunity in imitating the nature, and more possibility to promote the ability of original innovation. The significance and progress of bionics are summarized, in this paper, and the leading edges of bionics, in the near future, are forecasted.

  7. Development of Bionic Polymers

    Institute of Scientific and Technical Information of China (English)

    Xu Jian; Xie Qiongdan; Guo Xinlin; Feng Lin; Jiang Lei; Tang Wenghong; Luo Xiandong; Zhang Xiaoli; Han Charles C.

    2004-01-01

    Bionics, an artificial imitation of natural products, has always been a forever dream in the fairy tale or scientific fiction when we were childhood and children live now. However, the development of science in molecular scale makes this dream of childhood and manhood realize today.Bionics, a branch of science concerned with application the data about the functioning of biological system to the solution of engineering problems, become top-priority of science in the 21st century.However, few examples are given in molecular-level or nano-scale controlling lotus-like surface (a bionic surface for vast potential application). In the same time, such a typical bionic surface (as well known, so called "Lotus-effect") is a symbol or a totem that scientists can develop a novel approach to prepare desired surface and to control its microstructure or morphology at one's pleasure.In general, a film with a water contact angle (CA) higher than 150° can be defined as a superhydrophobic surface. The Langmuir-Blodgett film prepared by using CF3(CF2)10COOH possesses the lowest surface tension, which is 6 mJ/m2 (1). However, the water CA on a smooth surface with regularly aligned C20F42 with close-hexagonal packed -CF3 groups is only 119° (2).Obviously, only adjusting chemical composition is not enough to produce a superhydrophobic surface. Wenzel et al (3) suggested that the contact angle θ' of a liquid droplet on a rough solid surface should be written as:cosθ, =γcosθ = γ(γs-γsl)/γl, here γ is a roughness factor and γsl, γs and γl denote the interfacial tensions of the solid-liquid, the solid-gas, and the liquid-gas interfaces,respectively. This γ is always larger than 1 and a rough surface will be more water-repellent or more wettable to a liquid when intrinsic contact angle θ is bigger or smaller than 90°, respectively.Therefore, a general approach to obtain superhydrophobic surfaces is using a combination of depressing surface energy and enhancing surface

  8. Holographic Cosmology from BIonic Solutions

    CERN Document Server

    Sepehri, Alireza; Setare, Mohammad Reza; Ali, Ahmed Farag

    2015-01-01

    In this paper, we will use a BIonic solution for analysing the holographic cosmology. A BIonic solution is a configuration of a D-brane and an anti-D-brane connected by a wormhole. A BIonic configuration can form due to a transition of fundamental black strings. After the BIon has formed, the wormhole in the BIon will act act as a channel for the energy to flow into the D3-brane. This will increase the degrees of freedom of the D3-brane causing inflation. The inflation will end when the wormhole gets annihilated. However, as the distance between the D3-brane and the anti-D3-brane reduces, tachyonic states get created. These tachyonic states will lead to the formation of a new wormhole. This new wormhole will again increasing the degrees of freedom on the D3-brane causing late time acceleration.

  9. Getting the Measure of Bionics

    Institute of Scientific and Technical Information of China (English)

    Julian Vincent

    2005-01-01

    @@ In this issue of the Journal of Bionics Engineering we start something which is novel in academic publication but which is not at all uncommon in other serial publications. We present, in a series of seven chapters, a book on the interrelations between biology and engineering. It is not a handbook of bionics (though that might follow) but a series of essays that will bridge the gap between biology and engineering. We hope you will find them entertaining and informative, and that they will reinforce and revise areas of your knowledge,no matter what your entry point into this subject.

  10. [The bionic hand].

    Science.gov (United States)

    Surke, Carsten; Ducommun Dit Boudry, Pascal; Vögelin, Esther

    2015-08-01

    The loss of the upper extremity implicates a grave insult in the life of the involved person. To compensate for the loss of function different powered prosthetic devices are available. Ever since their first development 70 years ago numerous improvements in terms of size, weight and wearing comfort have been developed, but issues regarding the control of upper extremity prostheses remain. Slow grasping speed, limited grip positions and especially failure to provide a sensory feedback limit the acceptance in patients. Recent developments are aimed to allow a more intuitive control of the prosthetic device and to provide a sensory feedback to the amputee. Targeted reinnervation reassignes existing muscles to different peripheral nerves thereby enabling them to fulfill alternate functions. Implanting electrodes into muscle bellies of the forearm allows a more accurate control of the prosthesis. Promising results are being achieved by implanting nerve electrodes by establishing bilateral communication between patient and prosthesis. The following review summarizes the current developments of bionic prostheses in the upper extremity.

  11. Bionic machines and systems

    Energy Technology Data Exchange (ETDEWEB)

    Halme, A.; Paanajaervi, J. (eds.)

    2004-07-01

    Introduction Biological systems form a versatile and complex entirety on our planet. One evolutionary branch of primates, called humans, has created an extraordinary skill, called technology, by the aid of which it nowadays dominate life on the planet. Humans use technology for producing and harvesting food, healthcare and reproduction, increasing their capability to commute and communicate, defending their territory etc., and to develop more technology. As a result of this, humans have become much technology dependent, so that they have been forced to form a specialized class of humans, called engineers, who take care of the knowledge of technology developing it further and transferring it to later generations. Until now, technology has been relatively independent from biology, although some of its branches, e.g. biotechnology and biomedical engineering, have traditionally been in close contact with it. There exist, however, an increasing interest to expand the interface between technology and biology either by directly utilizing biological processes or materials by combining them with 'dead' technology, or by mimicking in technological solutions the biological innovations created by evolution. The latter theme is in focus of this report, which has been written as the proceeding of the post-graduate seminar 'Bionic Machines and Systems' held at HUT Automation Technology Laboratory in autumn 2003. The underlaying idea of the seminar was to analyze biological species by considering them as 'robotic machines' having various functional subsystems, such as for energy, motion and motion control, perception, navigation, mapping and localization. We were also interested about intelligent capabilities, such as learning and communication, and social structures like swarming behavior and its mechanisms. The word 'bionic machine' comes from the book which was among the initial material when starting our mission to the fascinating world

  12. "Bionic Woman" (2007): Gender, Disability and Cyborgs

    Science.gov (United States)

    Quinlan, Margaret M.; Bates, Benjamin R.

    2009-01-01

    This paper explores a representation of overlapping categories of gender, disability and cyborgs in "Bionic Woman" (2007). The television show "Bionic Woman" (2007) is a popular culture representation that uniquely brings together these categories. Three themes emerged from an analysis of blogger discourse surrounding the show. The themes reveal…

  13. 3D Printed Bionic Nanodevices.

    Science.gov (United States)

    Kong, Yong Lin; Gupta, Maneesh K; Johnson, Blake N; McAlpine, Michael C

    2016-06-01

    The ability to three-dimensionally interweave biological and functional materials could enable the creation of bionic devices possessing unique and compelling geometries, properties, and functionalities. Indeed, interfacing high performance active devices with biology could impact a variety of fields, including regenerative bioelectronic medicines, smart prosthetics, medical robotics, and human-machine interfaces. Biology, from the molecular scale of DNA and proteins, to the macroscopic scale of tissues and organs, is three-dimensional, often soft and stretchable, and temperature sensitive. This renders most biological platforms incompatible with the fabrication and materials processing methods that have been developed and optimized for functional electronics, which are typically planar, rigid and brittle. A number of strategies have been developed to overcome these dichotomies. One particularly novel approach is the use of extrusion-based multi-material 3D printing, which is an additive manufacturing technology that offers a freeform fabrication strategy. This approach addresses the dichotomies presented above by (1) using 3D printing and imaging for customized, hierarchical, and interwoven device architectures; (2) employing nanotechnology as an enabling route for introducing high performance materials, with the potential for exhibiting properties not found in the bulk; and (3) 3D printing a range of soft and nanoscale materials to enable the integration of a diverse palette of high quality functional nanomaterials with biology. Further, 3D printing is a multi-scale platform, allowing for the incorporation of functional nanoscale inks, the printing of microscale features, and ultimately the creation of macroscale devices. This blending of 3D printing, novel nanomaterial properties, and 'living' platforms may enable next-generation bionic systems. In this review, we highlight this synergistic integration of the unique properties of nanomaterials with the

  14. 3D printed bionic ears.

    Science.gov (United States)

    Mannoor, Manu S; Jiang, Ziwen; James, Teena; Kong, Yong Lin; Malatesta, Karen A; Soboyejo, Winston O; Verma, Naveen; Gracias, David H; McAlpine, Michael C

    2013-06-12

    The ability to three-dimensionally interweave biological tissue with functional electronics could enable the creation of bionic organs possessing enhanced functionalities over their human counterparts. Conventional electronic devices are inherently two-dimensional, preventing seamless multidimensional integration with synthetic biology, as the processes and materials are very different. Here, we present a novel strategy for overcoming these difficulties via additive manufacturing of biological cells with structural and nanoparticle derived electronic elements. As a proof of concept, we generated a bionic ear via 3D printing of a cell-seeded hydrogel matrix in the anatomic geometry of a human ear, along with an intertwined conducting polymer consisting of infused silver nanoparticles. This allowed for in vitro culturing of cartilage tissue around an inductive coil antenna in the ear, which subsequently enables readout of inductively-coupled signals from cochlea-shaped electrodes. The printed ear exhibits enhanced auditory sensing for radio frequency reception, and complementary left and right ears can listen to stereo audio music. Overall, our approach suggests a means to intricately merge biologic and nanoelectronic functionalities via 3D printing.

  15. Structural Bionic Design of Machine Tool Structures

    Institute of Scientific and Technical Information of China (English)

    ZHAO Ling; WANG Ting; GUO Hong-liang; LI Guo-meng

    2011-01-01

    A structural bionic design process is systematically presented for lightweight mechanical structures. By mimicking biological excellent structural principles, the stiffening ribs of a machining table and a moving column were redesigned for better load-bearing efficiency. Finite element method(FEM) simulation and model experiments were carried out for performance verification, which showed the increase of structural static and dynamic performance. Structural bionic offers a new solution to change conventional structures for high specific stiffness.

  16. Development of artificial bionic baroreflex system.

    Science.gov (United States)

    Sunagawa, Kenji; Sugimachi, Masaru

    2010-01-01

    The baroreflex system is the fastest mechanism in the body to regulate arterial pressure. Because the neural system (i.e., autonomic nervous system) mediates the baroreflex and the system operates under the closed-loop condition, the quantitative dynamic characteristics of the baroreflex system remained unknown until recently despite the fact that a countless number of observational and qualitative studies had been conducted. In order to develop the artificial baroreflex system, i.e., the bionic baroreflex system, we first anatomically isolated the carotid sinuses to open the baroreflex loop and identified the open-loop transfer function of the baroreflex system using white noise pressure perturbations. We found that the baroreflex system is basically a lowpass filter and remarkably linear. As an actuator to implement the bionic baroreflex system, we then stimulated the sympathetic efferent nerves at various parts of the baroreflex loop and identified the transfer functions from the stimulation sites to systemic arterial pressure. We found that the actuator responses can be described remarkably well with linear transfer functions. Since transfer functions of the native baroreflex and of the actuator were identified, the controller that is required to reproduce the native baroreflex transfer function can be easily derived from those transfer functions. To examine the performance of bionic baroreflex system, we implemented it animal models of baroreflex failure. The bionic baroreflex system restored normal arterial pressure regulation against orthostatic stresses that is indistinguishable from the native baroreflex system.

  17. [Analogies and analogy research in technical biology and bionics].

    Science.gov (United States)

    Nachtigall, Werner

    2010-01-01

    The procedural approaches of Technical Biology and Bionics are characterized, and analogy research is identified as their common basis. The actual creative aspect in bionical research lies in recognizing and exploiting technically oriented analogies underlying a specific biological prototype to indicate a specific technical application.

  18. Bionic asymmetry: from amiiform fish to undulating robotic fins

    Institute of Scientific and Technical Information of China (English)

    HU TianJiang; SHEN LinCheng; LOW K.H.

    2009-01-01

    Similar to bionic non-smooth which has been successfully applied in anti-resistance and anti-adhesion, bionic asymmetry is also an inherent property of biological systems and is worth exploring for con-ceivable pragmatic applications. Therefore, bionic asymmetry for undulations is of main interest in this paper. We initially investigate bionic asymmetry with a case study of the undulating robotic fin, RoboGnilos, which evolved from the long dorsal fin of Gymnarchus niloticus in the amiiforrn mode. Since the performance of the pre-existing undulating fins is hardly satisfactory, we obtain bionic in-spirations of undulatory asymmetry through observations and measurements on the specimen of G. niloticus, to improve upon the performance. Consequently, the newly acquired innovation for bionic asymmetry is incorporated into the previously derived kinematics model, and also applied to the ex-perimental prototype. Both computational and experimental results verify that bionic asymmetric un-dulation generates better propulsion performance (in terms of linear velocity and efficiency) than the traditional symmetric modes with the same undulatory parameters.

  19. The Bionic Man: Future Super Human

    Directory of Open Access Journals (Sweden)

    M. S. Sachin

    2014-01-01

    Full Text Available When I hear the phrase “human implantable electronics,” I must confess that I feel a bit queasy. It conjures up a more extreme image of pervasive computing than is usually justified. However, my perspective is that of a relatively healthy person in his 40s, without any physical handicaps. If my hearing was impaired or my heartbeat arrhythmic, I might be keen to find a remedy and, at this time, an electronic implant would probably be the way to go. Putting my emotional reaction aside, when I think about the possibilities of implantable technology, it actually begins to sound pretty cool. Humans do some Work well, some machine do, Why can’t combine them both? The result is The Bionic parts this paper will focus on the developments in technology towards amputees or those that have limited use of their arms or legs. Computers have enabled prosthetics to extend beyond wooden legs and plastic motionless appendages. A brief history of prosthetics will be introduced as well as the development of today’s newest technology. As it requires ECE, CS (for artificial intelligence, Mech {&} other fields combine technology. Prosthesis is an artificial body part designed to act as a cosmetic or functional replacement for the real thing, which might have been amputated or damaged as the result of trauma, disease or congenital disorder. Prostheses aren’t new – there’s evidence that artificial limbs were in use at least as far back as the first century BC.’ A prosthetic leg may have a knee joint that locks when the wearer puts weight on it, but this can happen only when the leg is fully extended and not, for example, when it’s bent while climbing a flight of stairs. Bionic prostheses offer a solution to such problems. Self-contained power sources perform a similar function to muscle, while sensors will detect what the wearer is doing and cause the limb to react accordingly. In addition to building artificial limbs that behave like the real thing

  20. The quest for the bionic arm.

    Science.gov (United States)

    Hutchinson, Douglas T

    2014-06-01

    The current state of research of upper extremity prosthetic devices is focused on creating a complete prosthesis with full motor and sensory function that will provide amputees with a near-normal human arm. Although advances are being made rapidly, many hurdles remain to be overcome before a functional, so-called bionic arm is a reality. Acquiring signals via nerve or muscle inputs will require either a reliable wireless device or direct wiring through an osseous-integrated implant. The best way to tap into the "knowledge" present in the peripheral nerve is yet to be determined.

  1. Tissue bionics: examples in biomimetic tissue engineering.

    Science.gov (United States)

    Green, David W

    2008-09-01

    Many important lessons can be learnt from the study of biological form and the functional design of organisms as design criteria for the development of tissue engineering products. This merging of biomimetics and regenerative medicine is termed 'tissue bionics'. Clinically useful analogues can be generated by appropriating, modifying and mimicking structures from a diversity of natural biomatrices ranging from marine plankton shells to sea urchin spines. Methods in biomimetic materials chemistry can also be used to fabricate tissue engineering scaffolds with added functional utility that promise human tissues fit for the clinic.

  2. A Bionic Neural Network for Fish-Robot Locomotion

    Institute of Scientific and Technical Information of China (English)

    Dai-bing Zhang; De-wen Hu; Lin-cheng Shen; Hai-bin Xie

    2006-01-01

    A bionic neural network for fish-robot locomotion is presented. The bionic neural network inspired from fish neural network consists of one high level controller and one chain of central pattern generators (CPGs). Each CPG contains a nonlinear neural Zhang oscillator which shows properties similar to sine-cosine model. Simulation results show that the bionic neural network presents a good performance in controlling the fish-robot to execute various motions such as startup,stop,forward swimming,backward swimming,turn right and turn left.

  3. Optical function of bionic nanostructure of ZnO

    Energy Technology Data Exchange (ETDEWEB)

    Xu, C X [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Zhu, G P [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Liu, Y J [School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798 (Singapore); Sun, X W [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Li, X [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Liu, J P [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Cui, Y P [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China)

    2007-10-15

    A novel bionic network nanostructure of zinc oxide (ZnO), which is similar to the microstructure of a butterfly wing, was first fabricated by a vapor-phase transport method using zinc powder as a source. These bionic nanostructures are composed of three ordered multi-aperture gratings. Similar to the optical effect of butterfly wings, the diffraction patterns of the bionic network of ZnO were observed. The mechanism of the optical function was discussed based on the physical model of multi-aperture diffraction.

  4. Graphite Oxide to Graphene. Biomaterials to Bionics.

    Science.gov (United States)

    Thompson, Brianna C; Murray, Eoin; Wallace, Gordon G

    2015-12-09

    The advent of implantable biomaterials has revolutionized medical treatment, allowing the development of the fields of tissue engineering and medical bionic devices (e.g., cochlea implants to restore hearing, vagus nerve stimulators to control Parkinson's disease, and cardiac pace makers). Similarly, future materials developments are likely to continue to drive development in treatment of disease and disability, or even enhancing human potential. The material requirements for implantable devices are stringent. In all cases they must be nontoxic and provide appropriate mechanical integrity for the application at hand. In the case of scaffolds for tissue regeneration, biodegradability in an appropriate time frame may be required, and for medical bionics electronic conductivity is essential. The emergence of graphene and graphene-family composites has resulted in materials and structures highly relevant to the expansion of the biomaterials inventory available for implantable medical devices. The rich chemistries available are able to ensure properties uncovered in the nanodomain are conveyed into the world of macroscopic devices. Here, the inherent properties of graphene, along with how graphene or structures containing it interface with living cells and the effect of electrical stimulation on nerves and cells, are reviewed.

  5. Resistance reduction by bionic coupling of the earthworm lubrication function

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Based on the biological coupling theory, the resistance reduction characteristic of the surface morphology and surface wettability of the earthworm were studied in this paper. The parameters of surface dorsal pore and corrugation were extracted. According to these parameters, the lubrication mechanism of the earthworm surface was analyzed. The distribution of the pores and surface morphology were designed and the bionic coupling samples were prepared. The positive pressure, lubricant flow rate and advancing velocity were selected as the experiment factors while the soil friction resistance as observed object. According to the obtained data of bionic coupling samples from the testing system of biologic signal for tiny soil adhesion test, the optimal samples from the bionic coupling resistance reduction tests were selected through the range analysis. Compared to the normal ones, the soil resistance of bionic coupling samples was reduced by 76.8%. This is of great significance and offers bright prospects for reducing energy loss in terrain mechanics.

  6. Superhydrophobic bionic surfaces with hierarchical microsphere/SWCNT composite arrays.

    Science.gov (United States)

    Li, Yue; Huang, Xing Jiu; Heo, Sung Hwan; Li, Cun Cheng; Choi, Yang Kyu; Cai, Wei Ping; Cho, Sung Oh

    2007-02-13

    Superhydrophobic bionic surfaces with hierarchical micro/nano structures were synthesized by decorating single-walled or multiwalled carbon nanotubes (CNTs) on monolayer polystyrene colloidal crystals using a wet chemical self-assembly technique and subsequent surface treatment with a low surface-energy material of fluoroalkylsilane. The bionic surfaces are based on the regularly ordered colloidal crystals, and thus the surfaces have a uniform superhydrophobic property on the whole surface. Moreover, the wettability of the bionic surface can be well controlled by changing the distribution density of CNTs or the size of polystyrene microspheres. The morphologies of the synthesized bionic surfaces bear much resemblance to natural lotus leaves, and the wettability exhibited remarkable superhydrophobicity with a water contact angle of about 165 degrees and a sliding angle of 5 degrees.

  7. Motor Driving Leg Design for Bionic Crab-like Robot

    Institute of Scientific and Technical Information of China (English)

    Wang; Li-quan; Qu; Xiao-rong; Meng; Qing-xin; Yuan; Peng; Wang; Mo-nan

    2002-01-01

    The paper presents the design of walking leg for bionics crab-like robot, which is driven with micro servo motor. The kinematic characteristics of the bionics machine are analysed for optimized structure parameters, which has been used in the robot design. A three closed loop motor control system structure for joint driver is also given, as well as the multi-joint driving system for walking robot leg.

  8. Bionic Research on Fish Scales for Drag Reduction

    Institute of Scientific and Technical Information of China (English)

    Zhaoliang Dou; Jiadao Wang; Darong Chen

    2012-01-01

    To reduce friction drag with bionic method in a more feasible way,the surface microstructure of fish scales was analyzed attempting to reveal the biologic features responding to skin friction drag reduction.Then comparable bionic surface mimicking fish scales was fabricated through coating technology for drag reduction.The paint mixture was coated on a substrate through a self-developed spray-painting apparatus.The bionic surface with micron-scale caves formed spontaneously due to the interfacial convection and deformation driven by interfacial tension gradient in the presence of solvent evaporation.Comparative experiments between bionic surface and smooth surface were performed in a water tunnel to evaluate the effect of bionic surface on drag reduction,and visible drag reduction efficiency was obtained.Numerical simulation results show that gas phase develops in solid-liquid interface of bionic surface with the effect of surface topography and partially replaces the solid-liquid shear force with gas-liquid shear force,hence reducing the skin friction drag effectively.Therefore,with remarkable drag reduction performance and simple fabrication technology,the proposed drag reduction technique shows the promise for practical applications.

  9. Bionics in Engineering Education Considerations, Experiences and Conclusions

    Directory of Open Access Journals (Sweden)

    Ralf Neurohr

    2008-01-01

    Full Text Available During recent years bionics, a new discipline which is in charge with the transfer of the principles of construction, regulation, interaction and organisation of biology into innovative technical solutions, has attracted significant interest from various industries. Based on this request for bionic expertise in engineering, the faculty for teaching engineering in foreign languages (FILS at ‘Politehnica’ University of Bucharest started a course in bionics in SS 2007, which was supported by the expertise of the German ‘Bionik-Kompetenz-Netz’, one of the leading organizations in bionics. This is the report on the considerations involved in the course concept, the first experiences with the students' acceptance, some conclusions and future perspectives for extending bionics activities at ‘Politehnica’. Finally, within the last section, the evaluation of a questionnaire, filled in by the students at the end of the course, will be presented. In order to avoid any confusion, considering overlapping or mixing up with other bio-disciplines related to technology, the paper starts with a short introduction, explaining the principles of bionics and providing a clear definition of the field.

  10. Bionic Research on Bird Feather for Drag Reduction

    Directory of Open Access Journals (Sweden)

    Beibei Feng

    2015-02-01

    Full Text Available To reduce friction drag with bionic method in a more feasible way, the surface microstructure of bird feather was analyzed attempting to reveal the biologic features responding to skin friction drag reduction. Then comparative bionic surface mimicking bird feather was fabricated through hot-rolling technology for drag reduction. The microriblet film was formed on a PVC substrate through a self-developed hot-rolling equipment. The bionic surface with micron-scale riblets formed spontaneously due to the elastic-plastic deformation of PVC in high temperature and high pressure environment. Comparative experiments between micro-structured bionic surface and smooth surface were performed in a wind tunnel to evaluate the effect of bionic surface on drag reduction, and significant drag reduction efficiency was obtained. Numerical simulation results show that microvortex induced in the solid-gas interface of bionic surface has the effect of shear stress reduction and the small level of an additional pressure drag resulting from pressure distribution deviation on bird feather like surface, hence reducing the skin friction drag significantly. Therefore, with remarkable drag reduction performance and simple fabrication technology, the proposed drag reduction technique shows the promise for practical applications.

  11. Bionic autonomic neuromodulation revolutionizes cardiology in the 21st century.

    Science.gov (United States)

    Sunagawa, Kenji

    2009-01-01

    In this invited session, we would like to address the impact of bionic neuromodulation on cardiovascular diseases. It has been well established that cardiovascular dysregulation plays major roles in the pathogenesis of cardiovascular diseases. This is the reason why most drugs currently used in cardiology have significant pharmacological effects on the cardiovascular regulatory system. Since the ultimate center for cardiovascular regulation is the brainstem, it is conceivable that autonomic neuromodulation would have significant impacts on cardiovascular diseases. On the basis of this framework, we first developed a bionic, neurally regulated artificial pacemaker. We then substituted the brainstem by CPU and developed a bionic artificial baroreflex system. We further developed a bionic brain that achieved better regulatory conditions than the native brainstem in order to improve survival in animal model with heart failure. We recently developed a bionic neuromodulation system to reduce infarction size following acute myocardial infarction. We believe that the bionic neuromodulation will inspire even more intricate applications in cardiology in the 21(st) century.

  12. Progress in the bionic study on anti-adhesion and resistance reduction of terrain machines

    Institute of Scientific and Technical Information of China (English)

    REN LuQuan

    2009-01-01

    The theoretical studies of bionics of machinery have great scientific significance, and the development of bionic machines has large practical values in the field of engineering and technology. Through the rigorous selection process of evolution, the survived living organisms have successfully developed outstanding abilities to adapt to their surroundings and to reproduce their offspring. In this review, we interpreted the fundamental principles of anti-adhesion and anti-resistance of soil animals by reviewing the current status in this research field and summarizing the work of the research group at Jilin Uni-versity of China in the past decades. The principles and technologies used in morphology bionics, electric-osmosis bionics, flexibility bionics, configuration bionics and coupling bionics were examined. Finally, the applications of the engineering bionics and their extensive prospects were introduced.

  13. Progress in the bionic study on anti-adhesion and resistance reduction of terrain machines

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The theoretical studies of bionics of machinery have great scientific significance, and the development of bionic machines has large practical values in the field of engineering and technology. Through the rigorous selection process of evolution, the survived living organisms have successfully developed outstanding abilities to adapt to their surroundings and to reproduce their offspring. In this review,we interpreted the fundamental principles of anti-adhesion and anti-resistance of soil animals by reviewing the current status in this research field and summarizing the work of the research group at Jilin University of China in the past decades. The principles and technologies used in morphology bionics,electric-osmosis bionics,flexibility bionics,configuration bionics and coupling bionics were examined.Finally,the applications of the engineering bionics and their extensive prospects were introduced.

  14. Bionic models for new sustainable energy technology

    Energy Technology Data Exchange (ETDEWEB)

    Tributsch, H. [Hahn-Meitner Inst., Dept. Solare Energetik, Berlin (Germany)

    2004-07-01

    Within the boundary conditions of an abundant, but diluted solar energy supply nature has successfully evolved sophisticated regenerative energy technologies, which are not yet familiar to human engineering tradition. Since until the middle of this century a substantial contribution of renewable energy to global energy consumption is required in order to limit environmental deterioration, bionic technologies may contribute to the development of commercially affordable technical options. Four biological energy technologies have been selected as examples to discuss the challenges, both in scientific and technological terms, as well as the material research aspects involved: photovoltaics based on irreversible kinetics, tensile water technology, solar powered protonic energy circuits, fuel cell catalysis based on abundant transition metals. (orig.)

  15. "Bionic Man" Showcases Medical Research | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... page please turn JavaScript on. Feature: The Bionic Man Meet the Bionic Man Past Issues / Fall 2014 Table of Contents The ... medical imaging, visit www.nibib.nih.gov "Bionic Man" Showcases Medical Research The National Institute of Biomedical ...

  16. Presenting Bionic: Broader Impacts and Outreach Network for Institutional Collaboration

    Science.gov (United States)

    Storm, K.

    2014-12-01

    Broader Impact plans are required of all NSF proposals. In 2011 the National Science Board, which oversees NSF, reconfirmed NSF's commitment to Broader Impacts in its task force report on the merit review system. At many institutions there are professionals that focus their work on supporting the Broader Impact work of researchers. This session will share the Broader Impacts and Outreach Network for Institutional Collaboration (BIONIC) plan to create a professional network of individuals and offices committed to planning and carrying out effective Broader Impact programming. BIONIC is an NSF Research Coordination Network that is recommended for funding through the Biology Directorate. In this session we will share the goals of BIONIC, and the progress to date in reaching those goals (of which one aspect is the curating of effective Broader Impact initiatives).

  17. [The design of bionic left ventricular auxiliary pump].

    Science.gov (United States)

    Jin, Henglin; Hu, Xiaobing; Du, Lei

    2015-01-01

    This paper reports a novel design of bionic left ventricular auxiliary pump, and the characteristic is that elastic diaphragm of pump driven by hydraulic, having smooth, reliable blood supply, can prevent blood clots, can use the flow sensor, pressure sensor detection showing the blood pressure and blood volume at the inlet and outlet of the pump. The pump can go with heart rate synchronization or asynchronous auxiliary by the R wave of human body's ECG. The design goal is realization of bionic throb. Through the animal experiment, the blood pressure waveforms are close to expectations, stable flow can stroke according to the set value, which prove that the pump can meet the requirement for heart disease patients for bionic left ventricular assistant.

  18. EDITORIAL: Special issue on medical bionics Special issue on medical bionics

    Science.gov (United States)

    Shepherd, Robert K.; D, Ph

    2009-12-01

    This special section of the Journal of Neural Engineering contains eight invited papers presented as part of the inaugural conference `Medical Bionics: A New Paradigm for Human Health' held in the beautiful seaside village of Lorne, Victoria, Australia from 16-19 November 2008. This meeting formed part of the Sir Mark Oliphant International Conference Series (www.oliphant.org.au) and was generously supported by the Department of Innovation, Industry, Science and Research of the Australian Government, the Australian Academy of Science and the Australian Academy of Technological Sciences and Engineering. This meeting was designed to bring experts from a variety of scientific, engineering and clinical disciplines together in a unique environment to discuss current progress in the field of medical bionics and to develop the concepts and techniques required to build the next generation of devices. The field is rapidly expanding, with new engineering solutions for neurological disorders being developed at an astonishing rate. Successful application of emerging engineering technologies into medical bionics devices requires a multidisciplinary research environment in order to deliver clinical solutions that are both safe and effective. Clinical success stories to date include spinal cord stimulators for the management of chronic neurological pain; auditory prostheses that allow the profoundly deaf to hear; and deep brain stimulation to negate movement disorders in Parkinson's disease. Other research programs currently undergoing clinical trials include devices that allow paraplegics to stand and even walk; brain-machine interfaces that provide quadriplegic patients with rudimentary control of a computer but may ultimately provide control of wheel chairs and artificial limbs; devices that detect and suppress epileptic seizures using brief trains of electrical stimulation; and retinal prostheses that will provide vision to the blind. The future for medical bionics is indeed

  19. [Theory and practice of bionic cultivation of traditional Chinese medicine].

    Science.gov (United States)

    Liu, Dahui; Huang, Luqi; Guo, Lanping; Shao, Aijuan; Chen, Meilan

    2009-03-01

    The bionic cultivation of medicinal plant is an ecological cultivation pattern, which is adopting ecological engineering and modern agricultural techniques to simulate the natural ecosystem of wild medicinal plant community, and has been given greater attention on the agriculture of traditional Chinese medicine (TCM). It is also the cross subject that combines Chinese traditional medicine, agronomy, horticulture, ecology, agricultural engineering and management. Moreover, it has significant technology advantages of promoting the sustainable utilization of medicinal plant resources, improving the ecological environment and harmonizing man and nature. So it's important to develop the bionic cultivation of TCM.

  20. The Bionic Anticipation of Natural Disasters

    Institute of Scientific and Technical Information of China (English)

    Helmut Tributsch

    2005-01-01

    After major natural disasters, such as the recent earthquake-tsunami event in South Asia, reports appear about the mysterious ability of animals to anticipate and to escape the impending danger. This is an opportunity to recall the long history of this phenomenon in the traditions of different civilizations, to evaluate Chinese efforts, 30 -40 years ago, to use this phenomenon for earthquake prediction, and to judge its state of acceptance in modern science. An effort is made to introduce this phenomenon as a research field of modern bionics. The timing is favorable since, increasingly, infrared thermal anomalies, monitored from satellite, suggesting litho-atmospheric processes, are found to precede earthquakes.They were unexpected by seismologists and are here suggested to essentially reflect the energy conversion patterns responsible for the signals monitored by animals. The aim is to learn from animals in the long term how natural disasters can better be anticipated, and how simple technical warning systems can be developed. Some challenges are analyzed. One is interpretation of the nature of energy release prior to the main earthquake disaster resulting in "macro-anomaly" precursors,another is better to understand the effect on animal senses. The role of non-linear cooperative phenomena including tsunamitype waves is emphasized.

  1. Fermentation based carbon nanotube multifunctional bionic composites

    Science.gov (United States)

    Valentini, Luca; Bon, Silvia Bittolo; Signetti, Stefano; Tripathi, Manoj; Iacob, Erica; Pugno, Nicola M.

    2016-06-01

    The exploitation of the processes used by microorganisms to digest nutrients for their growth can be a viable method for the formation of a wide range of so called biogenic materials that have unique properties that are not produced by abiotic processes. Here we produced living hybrid materials by giving to unicellular organisms the nutrient to grow. Based on bread fermentation, a bionic composite made of carbon nanotubes (CNTs) and a single-cell fungi, the Saccharomyces cerevisiae yeast extract, was prepared by fermentation of such microorganisms at room temperature. Scanning electron microscopy analysis suggests that the CNTs were internalized by the cell after fermentation bridging the cells. Tensile tests on dried composite films have been rationalized in terms of a CNT cell bridging mechanism where the strongly enhanced strength of the composite is governed by the adhesion energy between the bridging carbon nanotubes and the matrix. The addition of CNTs also significantly improved the electrical conductivity along with a higher photoconductive activity. The proposed process could lead to the development of more complex and interactive structures programmed to self-assemble into specific patterns, such as those on strain or light sensors that could sense damage or convert light stimulus in an electrical signal.

  2. Artificial neural interfaces for bionic cardiovascular treatments.

    Science.gov (United States)

    Kawada, Toru; Sugimachi, Masaru

    2009-01-01

    An artificial nerve, in the broad sense, may be conceptualized as a physical and logical interface system that reestablishes the information traffic between the central nervous system and peripheral organs. Studies on artificial nerves targeting the autonomic nervous system are in progress to explore new treatment strategies for several cardiovascular diseases. In this article, we will review our research targeting the autonomic nervous system to treat cardiovascular diseases. First, we identified the rule for decoding native sympathetic nerve activity into a heart rate using transfer function analysis, and established a framework for a neurally regulated cardiac pacemaker. Second, we designed a bionic baroreflex system to restore the baroreflex buffering function using electrical stimulation of the celiac ganglion in a rat model of orthostatic hypotension. Third, based on the hypothesis that autonomic imbalance aggravates chronic heart failure, we implanted a neural interface into the right vagal nerve and demonstrated that intermittent vagal stimulation significantly improved the survival rate in rats with chronic heart failure following myocardial infarction. Although several practical problems need to be resolved, such as those relating to the development of electrodes feasible for long-term nerve activity recording, studies of artificial neural interfaces with the autonomic nervous system have great possibilities in the field of cardiovascular treatment. We expect further development of artificial neural interfaces as novel strategies to cope with cardiovascular diseases resistant to conventional therapeutics.

  3. Structural Bionic Design for Digging Shovel of Cassava Harvester Considering Soil Mechanics

    Directory of Open Access Journals (Sweden)

    Shihao Liu

    2014-01-01

    Full Text Available In order to improve the working performance of cassava harvester, structural bionic design for its digging shovel was conducted. Taking the oriental mole cricket's paws as bionic prototype, a new structural bionic design method for digging shovel was established, which considers the morphology-configuration-function coupling bionic. A comprehensive performance comparison method was proposed, which is used to select the bionic design schemes. The proposed bionic design method was used to improve digging shovel structure of a digging-pulling style cassava harvester, and nine bionic-type digging shovels were obtained with considering the impact of soil mechanics. After conducting mechanical properties comparative analysis for bionic-type digging shovels, the bionic design rules were summed up, and the optimal design scheme of digging shovel was obtained through combining the proposed comprehensive performance comparison method with Analytic Hierarchy Process (AHP. Studies have shown that bionic design method not only can improve the overall mechanical properties of digging shovel, but also can help to improve the harvesting effect of cassava harvester, which provides a new idea for crops harvesting machinery's structural optimization design.

  4. Suzhou Institute of Nano-tech and Nano-bionics

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ The Suzhou Institute of Nano-tech and Nano-bionics is co-established by CAS, the provincial government of Jiangsu, and the municipal government of Suzhou, a time-honored urban center and picturesque tourist resort in the Yangtze delta.

  5. Elastic Buckling of Bionic Cylindrical Shells Based on Bamboo

    Institute of Scientific and Technical Information of China (English)

    Jian-feng Ma; Wu-yi Chen; Ling Zhao; Da-hai Zhao

    2008-01-01

    High load-bearing efficiency is one of the advantages of biological structures after the evolution of billions of years.Biomimicking from nature may offer the potential for lightweight design. In the viewpoint of mechanics properties, the culm of bamboo comprises of two types of cells and the number of the vascular bundles takes a gradient of distribution. A three-point bending test was carried out to measure the elastic modulus. Results show that the elastic modulus of bamboo decreases gradually from the periphery towards the centre. Based on the structural characteristics of bamboo, a bionic cylindrical structure was designed to mimic the gradient distribution of vascular bundles and parenchyma cells. The buckling resistance of the bionic structure was compared with that of a traditional shell of equal mass under axial pressure by finite element simulations. Results show that the load-bearing capacity of bionic shell is increased by 124.8%. The buckling mode of bionic structure is global buckling while that of the conventional shell is local buckling.

  6. Design and Testing of a Bionic Dancing Prosthesis.

    Directory of Open Access Journals (Sweden)

    Elliott J Rouse

    Full Text Available Traditionally, prosthetic leg research has focused on improving mobility for activities of daily living. Artistic expression such as dance, however, is not a common research topic and consequently prosthetic technology for dance has been severely limited for the disabled. This work focuses on investigating the ankle joint kinetics and kinematics during a Latin-American dance to provide unique motor options for disabled individuals beyond those of daily living. The objective of this study was to develop a control system for a bionic ankle prosthesis that outperforms conventional prostheses when dancing the rumba. The biomechanics of the ankle joint of a non-amputee, professional dancer were acquired for the development of the bionic control system. Subsequently, a professional dancer who received a traumatic transtibial amputation in April 2013 tested the bionic dance prosthesis and a conventional, passive prosthesis for comparison. The ability to provide similar torque-angle behavior of the biological ankle was assessed to quantify the biological realism of the prostheses. The bionic dancing prosthesis overlapped with 37 ± 6% of the non-amputee ankle torque and ankle angle data, compared to 26 ± 2% for the conventional, passive prosthesis, a statistically greater overlap (p = 0.01. This study lays the foundation for quantifying unique, expressive activity modes currently unavailable to individuals with disabilities. Future work will focus on an expansion of the methods and types of dance investigated in this work.

  7. Design and Testing of a Bionic Dancing Prosthesis

    Science.gov (United States)

    Rouse, Elliott J.; Villagaray-Carski, Nathan C.; Emerson, Robert W.; Herr, Hugh M.

    2015-01-01

    Traditionally, prosthetic leg research has focused on improving mobility for activities of daily living. Artistic expression such as dance, however, is not a common research topic and consequently prosthetic technology for dance has been severely limited for the disabled. This work focuses on investigating the ankle joint kinetics and kinematics during a Latin-American dance to provide unique motor options for disabled individuals beyond those of daily living. The objective of this study was to develop a control system for a bionic ankle prosthesis that outperforms conventional prostheses when dancing the rumba. The biomechanics of the ankle joint of a non-amputee, professional dancer were acquired for the development of the bionic control system. Subsequently, a professional dancer who received a traumatic transtibial amputation in April 2013 tested the bionic dance prosthesis and a conventional, passive prosthesis for comparison. The ability to provide similar torque-angle behavior of the biological ankle was assessed to quantify the biological realism of the prostheses. The bionic dancing prosthesis overlapped with 37 ± 6% of the non-amputee ankle torque and ankle angle data, compared to 26 ± 2% for the conventional, passive prosthesis, a statistically greater overlap (p = 0.01). This study lays the foundation for quantifying unique, expressive activity modes currently unavailable to individuals with disabilities. Future work will focus on an expansion of the methods and types of dance investigated in this work. PMID:26285201

  8. On the resonance analysis for compliant bionic jellyfishes

    Institute of Scientific and Technical Information of China (English)

    HSIEH; Wen-Hsiang; CHEN; Tsung-I

    2010-01-01

    A bionic jellyfish is a robot that can mimic the swimming of a real jellyfish. In practical application, the volume and the capacity of its carrying power are limited, hence its power consumption is a crucial factor for continuous swimming. The purpose of this paper is to propose an approach for the resonance analysis of bionic jellyfishes in order to investigate their energy efficiency in swimming. First, a suitable rigid-body bionic jellyfish was chosen from the previous study, and then its design approach was presented, Then, it was transformed into a compliant design, by the proposed method, in order to mimic the motion of a real jellyfish. Furthermore, its solid model was drawn, and the approach of modal analysis by using ANSYS software was addressed. After that, two terms, specific energy and energy ratio, were defined in order to evaluate its energy efficiency. Finally, a design example was given for illustration, and its motion simulations with and without resonance input were conducted by using ADAMS software. Additionally, their specific energies and energy ratios were found. The simulation results showed that the required input energy would be significantly reduced if a bionic jellyfish swims at its resonance frequency.

  9. Design and Testing of a Bionic Dancing Prosthesis.

    Science.gov (United States)

    Rouse, Elliott J; Villagaray-Carski, Nathan C; Emerson, Robert W; Herr, Hugh M

    2015-01-01

    Traditionally, prosthetic leg research has focused on improving mobility for activities of daily living. Artistic expression such as dance, however, is not a common research topic and consequently prosthetic technology for dance has been severely limited for the disabled. This work focuses on investigating the ankle joint kinetics and kinematics during a Latin-American dance to provide unique motor options for disabled individuals beyond those of daily living. The objective of this study was to develop a control system for a bionic ankle prosthesis that outperforms conventional prostheses when dancing the rumba. The biomechanics of the ankle joint of a non-amputee, professional dancer were acquired for the development of the bionic control system. Subsequently, a professional dancer who received a traumatic transtibial amputation in April 2013 tested the bionic dance prosthesis and a conventional, passive prosthesis for comparison. The ability to provide similar torque-angle behavior of the biological ankle was assessed to quantify the biological realism of the prostheses. The bionic dancing prosthesis overlapped with 37 ± 6% of the non-amputee ankle torque and ankle angle data, compared to 26 ± 2% for the conventional, passive prosthesis, a statistically greater overlap (p = 0.01). This study lays the foundation for quantifying unique, expressive activity modes currently unavailable to individuals with disabilities. Future work will focus on an expansion of the methods and types of dance investigated in this work.

  10. Superhydrophobicity of Bionic Alumina Surfaces Fabricated by Hard Anodizing

    Institute of Scientific and Technical Information of China (English)

    Jing Li; Feng Du; Xianli Liu; Zhonghao Jiang; Luquan Ren

    2011-01-01

    Bionic alumina samples were fabricated on convex dome type aluminum alloy substrate using hard anodizing technique.The convex domes on the bionic sample were fabricated by compression molding under a compressive stress of 92.5 MPa.The water contact angles of the as-anodized bionic samples were measured using a contact angle meter (JC2000A) with the 3 μL water drop at room temperature.The measurement of the wetting property showed that the water contact angle of the unmodified as-anodized bionic alumina samples increases from 90° to 137° with the anodizing time.The increase in water contract angle with anodizing time arises from the gradual formation of hierarchical structure or composite structure.The structure is composed of the micro-scaled alumina columns and pores.The height of columns and the depth of pores depend on the anodizing time.The water contact angle increases significantly from 96° to 152° when the samples were modified with self-assembled monolayer of octadecanethiol (ODT),showing a change in the wettability from hydrophobicity to super-hydrophobicity.This improvement in the wetting property is attributed to the decrease in the surface energy caused by the chemical modification.

  11. BIOCONAID System (Bionic Control of Acceleration Induced Dimming). Final Report.

    Science.gov (United States)

    Rogers, Dana B.; And Others

    The system described represents a new technique for enhancing the fidelity of flight simulators during high acceleration maneuvers. This technique forces the simulator pilot into active participation and energy expenditure similar to the aircraft pilot undergoing actual accelerations. The Bionic Control of Acceleration Induced Dimming (BIOCONAID)…

  12. Gas-solid Erosion on Bionic Configuration Surface

    Institute of Scientific and Technical Information of China (English)

    HAN Zhiwu; ZHANG Junqiu; GE Chao; JIANG Jialian; REN Luquan

    2011-01-01

    A three levels orthogonal table- L9(34) was used, namely, impact angle, rotating speed, erodent size, and surface configuration were considered. The three bionic surface configurations are pit, groove, and ring. The experimental results indicate the experiment factors affecting erosive rate are, in their sequence of contribution, erodent size, impact angle, configuration, and rotating speed; the erosive rate increased with increase in rotating speed, erodent size; the erosion resistance of the sample with ring structure is higher than that of the other two samples. Based on this result, regression orthogonal experiment was carried out to select the optimal erosion resistance condition with respect to the ring bionic surface configuration. Regression equations between erosive rate and experimental factors of ring surface configurations were obtained.

  13. HYDRODYNAMIC ANALYSIS AND SIMULATION OF A SWIMMING BIONIC ROBOT TUNA

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A dynamic model for undulatory locomotion was proposed to study the swimming mechanism of a developed bionic robot tuna. On the basis of inviscid hydrodynamics and rigid-body dynamics, the momentum and propulsive force required for propelling the swimming robot tuna's flexible body was calculated. By solving the established dynamic equations and efficiency formula, the swimming velocity and propulsive efficiency of the bionic robot tuna were obtained. The relationship between the kinematic parameters of the robot tuna's body curve and the hydrodynamic performances was established and discussed after hydrodynamic simulations. The results presented in this article can be used to increase the swimming speed, propulsive thrust, and the efficiency of underwater vehicles effectively.

  14. Bionic optimization research of soil cultivating component design

    Institute of Scientific and Technical Information of China (English)

    GUO ZhiJun; ZHOU ZhiLi; ZHANG Yi; LI ZhongLi

    2009-01-01

    The basic biomechanical laws that apply to the clawed toes of animals with powerful digging abilities and the optimal bionic design of curved soil cultivating components with an analogous contour were researched in a novel way. First, the curvature and profile of the inside contour line of a field mouse's clawed toe were analyzed. The finite element method (FEM) was then used to simulate the working process in order to study the changing characteristics of the working resistance of bionic soil-engaging surfaces and the stress field of the processed soil. A straight-line cultivating component was used for comparative analysis. In accordance with the simulation results, a series of soil cultivating components of varying design were manufactured. An indoor soil bin experiment was carried out to measure their working resistance and validate the results of the FEM analysis. The results of this research would have important values in the optimization design of cultivating components for energy and cost savings.

  15. Bionic restorative system: its potential value in caries therapy.

    Science.gov (United States)

    He, M M Hao; Zheng, M M Ren; Lin, M D Yinghe

    2009-07-01

    Dental defect caused by dental caries is usually restored by fillings, inlays or onlays at the present day. Although the therapeutic effects of these methods have already been confirmed, complications occasionally set in, such as pulp injury, fracture and secondary caries. Bionic dental organic center possesses similar functions of the natural dental organic center. So we put forward a hypothesis that bionic organic center can be transplanted onto the conditioned pulpal walls of the prepared cavity and a specific filling material, which the cavity will be filled with, provides oxygen, nutrition and raw materials for it to regenerate the lost odontal tissue in vivo. The regenerated odontal tissue which has similar properties of the healthy odontal tissue will restore the defect and it will be combined with the residual odontal tissue tightly, not only in physical structure but also in function. Then the teeth suffering from dental caries could live and function like healthy ones.

  16. [Bionic model for coordinated head-eye motion control].

    Science.gov (United States)

    Mao, Xiaobo; Chen, Tiejun

    2011-10-01

    The relationships between eye movements and head movements of the primate during gaze shifts are analyzed in detail in the present paper. Applying the mechanisms of neurophysiology to engineering domain, we have improved the robot eye-head coordination. A bionic control strategy of coordinated head-eye motion was proposed. The processes of gaze shifts are composed of an initial fast phase followed by a slow phase. In the fast phase saccade eye movements and slow head movements were combined, which cooperate to bring gaze from an initial resting position toward the new target rapidly, while in the slow phase the gaze stability and target fixation were ensured by the action of the vestibulo-ocular reflex (VOR) where the eyes and head rotate by equal amplitudes in opposite directions. A bionic gaze control model was given. The simulation results confirmed the effectiveness of the model by comparing with the results of neurophysiology experiments.

  17. Development of Junction Elements from Study of the Bionics

    Institute of Scientific and Technical Information of China (English)

    Wilson Kindlein Junior; Luis Henrique Alves C(a)ndido; André Canal Marques; Sandra Souza dos Santos; Maurício da Silva Viegas

    2007-01-01

    The applications of bionic methodology developed by the Laboratory of Design and Material Selection as basis in the creation of junction elements were demonstrated.These elements favor the application of Ecodesign in reference to the effectiveness of product dismount aiming the reduction of ambient impact in all its phases of use.The creation,the development and the confection of new junction elements were described,and case studies of new products developed specificallv with this purpose were presented.

  18. Drag reduction through self-texturing compliant bionic materials

    Science.gov (United States)

    Liu, Eryong; Li, Longyang; Wang, Gang; Zeng, Zhixiang; Zhao, Wenjie; Xue, Qunji

    2017-01-01

    Compliant fish skin is effectively in reducing drag, thus the design and application of compliant bionic materials may be a good choice for drag reduction. Here we consider the drag reduction of compliant bionic materials. First, ZnO and PDMS mesh modified with n-octadecane were prepared, the drag reduction of self-texturing compliant n-octadecane were studied. The results show that the mesh modified by ZnO and PDMS possess excellent lipophilic and hydrophobic, thus n-octadecane at solid, semisolid and liquid state all have good adhesion with modified mesh. The states of n-octadecane changed with temperature, thus, the surface contact angle and adhesive force all varies obviously at different state. The contact angle decreases with temperature, the adhesive force shows a lower value at semisolid state. Furthermore, the drag testing results show that the compliant n-octadecane film is more effectively in drag reduction than superhydrophobic ZnO/PDMS film, indicating that the drag reduction mechanism of n-octadecane is significantly different with superhydrophobic film. Further research shows that the water flow leads to self-texturing of semisolid state n-octadecane, which is similar with compliant fish skin. Therefore, the compliant bionic materials of semisolid state n-octadecane with regular bulge plays a major role in the drag reduction.

  19. Bionics by examples 250 scenarios from classical to modern times

    CERN Document Server

    Nachtigall, Werner

    2015-01-01

    Bionics means learning from the nature for the development of technology. The science of "bionics" itself is classified into several sections, from materials and structures over procedures and processes until evolution and optimization. Not all these areas, or only a few, are really known in the public and also in scientific literature. This includes the Lotus-effect, converted to the contamination-reduction of fassades and the shark-shed-effect, converted to the  resistance-reduction of airplanes. However, there are hundreds of highly interesting examples that contain the transformation of principles of the nature into technology. From the large number of these examples, 250 were selected for the present book according to "prehistory", "early-history", "classic" and "modern time". Most examples are new. Every example includes a printed page in a homogeneous arrangement. The examples from the field "modern time" are joint in blocks corresponding to the sub-disciplines of bionics.

  20. Advances in Propulsive Bionic Feet and Their Actuation Principles

    Directory of Open Access Journals (Sweden)

    Pierre Cherelle

    2014-07-01

    Full Text Available In the past decades, researchers have deeply studied pathological and nonpathological gait to understand the human ankle function during walking. These efforts resulted in the development of new lower limb prosthetic devices aiming at raising the 3C-level (control, comfort, and cosmetics of amputees. Thanks to the technological advances in engineering and mechatronics, challenges in the field of prosthetics have become an important source of interest for roboticists. Currently, most of the bionic feet are still on a research level but show promising results and a preview of tomorrow's commercial prosthetic devices. In this paper, the authors present the current state-of-the-art and the latest advances in propulsive bionic feet with its actuation principles. The context of this review study is outlined followed by a brief description of the basics in human biomechanics and criteria for new prosthetic designs. A new categorization based on the actuation principle of propulsive ankle-foot prostheses is proposed. Based on simulations, the general principles and benefits of each actuation method are explained. The corresponding latest advances in propulsive bionic feet are presented together with their main characteristics and scientific outcomes. The authors also propose to the reader a comparison analysis of the presented devices with a discussion of the general tendencies in new prosthetic feet.

  1. Erosion resistance of bionic functional surfaces inspired from desert scorpions.

    Science.gov (United States)

    Zhiwu, Han; Junqiu, Zhang; Chao, Ge; Li, Wen; Ren, Luquan

    2012-02-01

    In this paper, a bionic method is presented to improve the erosion resistance of machine components. Desert scorpion (Androctonus australis) is a typical animal living in sandy deserts, and may face erosive action of blowing sand at a high speed. Based on the idea of bionics and biologic experimental techniques, the mechanisms of the sand erosion resistance of desert scorpion were investigated. Results showed that the desert scorpions used special microtextures such as bumps and grooves to construct the functional surfaces to achieve the erosion resistance. In order to understand the erosion resistance mechanisms of such functional surfaces, the combination of computational and experimental research were carried out in this paper. The Computational Fluid Dynamics (CFD) method was applied to predict the erosion performance of the bionic functional surfaces. The result demonstrated that the microtextured surfaces exhibited better erosion resistance than the smooth surfaces. The further erosion tests indicated that the groove surfaces exhibited better erosion performance at 30° injection angle. In order to determine the effect of the groove dimensions on the erosion resistance, regression analysis of orthogonal multinomials was also performed under a certain erosion condition, and the regression equation between the erosion rate and groove distance, width, and height was established.

  2. Nanobionics: the impact of nanotechnology on implantable medical bionic devices.

    Science.gov (United States)

    Wallace, G G; Higgins, M J; Moulton, S E; Wang, C

    2012-08-01

    The nexus of any bionic device can be found at the electrode-cellular interface. Overall efficiency is determined by our ability to transfer electronic information across that interface. The nanostructure imparted to electrodes plays a critical role in controlling the cascade of events that determines the composition and structure of that interface. With commonly used conductors: metals, carbon and organic conducting polymers, a number of approaches that promote control over structure in the nanodomain have emerged in recent years with subsequent studies revealing a critical dependency between nanostructure and cellular behaviour. As we continue to develop our understanding of how to create and characterise electromaterials in the nanodomain, this is expected to have a profound effect on the development of next generation bionic devices. In this review, we focus on advances in fabricating nanostructured electrodes that present new opportunities in the field of medical bionics. We also briefly evaluate the interactions of living cells with the nanostructured electromaterials, in addition to highlighting emerging tools used for nanofabrication and nanocharacterisation of the electrode-cellular interface.

  3. Effects of bionic non-smooth surface on reducing soil resistance to disc ploughing

    Institute of Scientific and Technical Information of China (English)

    CHIRENDE; Benard; SIMALENGA; Timothy; Emmanuel

    2010-01-01

    Past researches have shown that the non-smooth body surfaces of soil burrowing animals help to reduce soil resistance. In this research, this concept of bionic non-smooth surface was applied to disc ploughs and an experiment was conducted in an indoor soil bin to find out the effects of different bionic units on reducing soil resistance to disc ploughing. Horizontal force acting on the disc plough during soil deformation was measured using a 5 kN sensor. Convex and concave bionic units were used and the material used for making convex ones is ultra high molecular weight polyethylene (UHMWPE) which is hydrophobic. From the experiment results, higher or deeper bionic units always resulted in less soil resistance. Convex bionic units gave the highest resistance reduction reaching a maximum of 19% reduction (from 1715.36 N to 1383.65 N) compared to concave bi-onic units. Also, samples with a bionic unit density of 30% gave the highest resistance reduction compared to the other two, which were either plain or had 10% density. In conclusion, the concept of bionic non-smooth units can be applied to disc ploughs in order to reduce soil resistance.

  4. The Research on Friction Characteristics of Non Smooth Bionic Mesoscopic Surface

    Directory of Open Access Journals (Sweden)

    Su Chunjian

    2014-12-01

    Full Text Available The application of using friction to transmit power and prevent slippage is very widely used, many animals have very strong adhesion climbing ability, and it has important theoretical significance and wide application prospect to research and the prepare bionic surface to increase transmission friction using the bionic technology. In recent years, the research of foot structure of climbing animals shows that their surface morphology has both macro and micro scale features, and only study from the macro to the micro scale surface structure can be better elucidate the mechanism of increasing-friction of climbing animal. This paper will study bionic surface structure on mesoscopic scale from micron to millimeter level, research the influence of foot structure of climbing animal under mesoscopic scale on characteristics of increasing friction using bionic technology, prepare the bionic non-smooth surface of convex or concave using bionic manufacturing technology, establish the friction model of non-smooth surface, investigate the increasing-friction mechanism of the bionic surface morphology on mesoscopic scales, reveals the influence of surface morphology, layout, size and material properties on the friction characteristics, provide the design of bionic friction surface and calculation method of friction coefficient and provide reliable theoretical basis for engineering application.

  5. Analysis of North American Newspaper Coverage of Bionics Using the Disability Studies Framework

    Directory of Open Access Journals (Sweden)

    Sonum Panesar

    2014-02-01

    Full Text Available Bionics are a set of technology products that are constantly evolving. Bionics are proposed as body add-ons or replacement for many body parts (ears, eyes, knees, neural prostheses, joints, muscles, kidney, liver, cartilage lungs, discs, pancreas, dental pulp, skin, hippocampus, legs and hands, and functions such as speech. Two main applications of bionic products are discussed; one being for the restoration of body abilities to a species-typical norm and the other being the addition of abilities to the body that are not species-typical. Disabled people are one main group perceived to be in need of therapeutic interventions that use various bionic products. So far, therapeutic interventions are about restoration to the species-typical norm. However, therapeutic bionic products increasingly give the wearer beyond normal body abilities (therapeutic enhancements. Many so-called non-disabled people want the same enhanced body-abilities especially through non-invasive bionic products (e.g., non-invasive brain machine interfaces, exoskeletons. The media has the ability to shape public perceptions with numerous consequences. The purpose of this study was to provide quantitative and qualitative data on how bionic technologies and its users are portrayed in North American newspapers. Data was obtained from 1977 to 2013 from the Canadian Newsstand complete database which covers over 300 English language Canadian newspapers and two Canadian newspapers, one with national focus (The Globe and Mail and one with local focus (Calgary Herald, and from 1980–2013 from one American newspaper with national reach (The New York Times. The study found (a an almost always positive portrayal of bionics; (b coverage of bionics mostly within a medical framework; (c a predominantly stereotypical and negative portrayal of individuals with disabilities; and (d a hierarchy of worthiness between different assistive devices such as a reporting bias favoring artificial legs

  6. Investigation of the Effect of Dimple Bionic Nonsmooth Surface on Tire Antihydroplaning.

    Science.gov (United States)

    Zhou, Haichao; Wang, Guolin; Ding, Yangmin; Yang, Jian; Zhai, Huihui

    2015-01-01

    Inspired by the idea that bionic nonsmooth surfaces (BNSS) reduce fluid adhesion and resistance, the effect of dimple bionic nonsmooth structure arranged in tire circumferential grooves surface on antihydroplaning performance was investigated by using Computational Fluid Dynamics (CFD). The physical model of the object (model of dimple bionic nonsmooth surface distribution, hydroplaning model) and SST k - ω turbulence model are established for numerical analysis of tire hydroplaning. By virtue of the orthogonal table L16(4(5)), the parameters of dimple bionic nonsmooth structure design compared to the smooth structure were analyzed, and the priority level of the experimental factors as well as the best combination within the scope of the experiment was obtained. The simulation results show that dimple bionic nonsmooth structure can reduce water flow resistance by disturbing the eddy movement in boundary layers. Then, optimal type of dimple bionic nonsmooth structure is arranged on the bottom of tire circumferential grooves for hydroplaning performance analysis. The results show that the dimple bionic nonsmooth structure effectively decreases the tread hydrodynamic pressure when driving on water film and increases the tire hydroplaning velocity, thus improving tire antihydroplaning performance.

  7. Investigation of the Effect of Dimple Bionic Nonsmooth Surface on Tire Antihydroplaning

    Directory of Open Access Journals (Sweden)

    Haichao Zhou

    2015-01-01

    Full Text Available Inspired by the idea that bionic nonsmooth surfaces (BNSS reduce fluid adhesion and resistance, the effect of dimple bionic nonsmooth structure arranged in tire circumferential grooves surface on antihydroplaning performance was investigated by using Computational Fluid Dynamics (CFD. The physical model of the object (model of dimple bionic nonsmooth surface distribution, hydroplaning model and SST k-ω turbulence model are established for numerical analysis of tire hydroplaning. By virtue of the orthogonal table L16(45, the parameters of dimple bionic nonsmooth structure design compared to the smooth structure were analyzed, and the priority level of the experimental factors as well as the best combination within the scope of the experiment was obtained. The simulation results show that dimple bionic nonsmooth structure can reduce water flow resistance by disturbing the eddy movement in boundary layers. Then, optimal type of dimple bionic nonsmooth structure is arranged on the bottom of tire circumferential grooves for hydroplaning performance analysis. The results show that the dimple bionic nonsmooth structure effectively decreases the tread hydrodynamic pressure when driving on water film and increases the tire hydroplaning velocity, thus improving tire antihydroplaning performance.

  8. Particle Erosion Resistance of Bionic Samples Inspired from Skin Structure of Desert Lizard, Laudakin stoliczkana

    Institute of Scientific and Technical Information of China (English)

    He Huang; Yan Zhang; Luquan Ren

    2012-01-01

    In order to improve the particle erosion resistance of engineering surfaces,this paper proposed a bionic sample which is inspired from the skin structure of desert lizard,Laudakin stoliczkana.The bionic sample consists of a hard shell (aluminum) and a soft core (silicone rubber) which form a two-layer composite structure.The sand blast tests indicated that the bionic sample has better particle erosion resistance.In steady erosion period,the weight loss per unit time of the bionic sample is about 10% smaller than the contrast sample.The anti-erosion mechanism of the bionic sample was studied by single particle impact test.The results show that,after the impact,the kinetic energy of the particle is reduced by 56.5% on the bionic sample which is higher than that on the contrast sample (31.2%).That means the bionic sample can partly convert the kinetic energy of the particle into the deformation energy of the silicone rubber layer,thus the erosion is reduced.

  9. Bionic Humans Using EAP as Artificial Muscles Reality and Challenges

    Directory of Open Access Journals (Sweden)

    Yoseph Bar-Cohen

    2008-11-01

    Full Text Available For many years, the idea of a human with bionic muscles immediately conjures up science fiction images of a TV series superhuman character that was implanted with bionic muscles and portrayed with strength and speed far superior to any normal human. As fantastic as this idea may seem, recent developments in electroactive polymers (EAP may one day make such bionics possible. Polymers that exhibit large displacement in response to stimulation that is other than electrical signal were known for many years. Initially, EAP received relatively little attention due to their limited actuation capability. However, in the recent years, the view of the EAP materials has changed due to the introduction of effective new materials that significantly surpassed the capability of the widely used piezoelectric polymer, PVDF. As this technology continues to evolve, novel mechanisms that are biologically inspired are expected to emerge. EAP materials can potentially provide actuation with lifelike response and more flexible configurations. While further improvements in performance and robustness are still needed, there already have been several reported successes. In recognition of the need for cooperation in this multidisciplinary field, the author initiated and organized a series of international forums that are leading to a growing number of research and development projects and to great advances in the field. In 1999, he challenged the worldwide science and engineering community of EAP experts to develop a robotic arm that is actuated by artificial muscles to win a wrestling match against a human opponent. In this paper, the field of EAP as artificial muscles will be reviewed covering the state of the art, the challenges and the vision for the progress in future years.

  10. Laser Additive Manufacturing and Bionics: Redefining Lightweight Design

    Science.gov (United States)

    Emmelmann, C.; Sander, P.; Kranz, J.; Wycisk, E.

    New layer wise manufacturing technologies such as Laser Additive Manufacturing (LAM) allow innovative approaches to product design. Especially for lightweight design in aircraft applications LAM offers new possibilities for load-adapted structures. However, to fully capture lightweight potential of LAM technologies new design guidelines and processes have to be developed. A novel approach to extreme lightweight design is realized by incorporating structural optimization tools, bionic structures and LAM guidelines into one design process. By consequently following this design process designers can achieve lightweight savings in designing new aircraft structures.

  11. Transformation: Structure/space studies in bionics and space design

    Science.gov (United States)

    Gruber, Petra; Imhof, Barbara

    2007-02-01

    This paper discusses the architectural design project "Transformation Structure Space", which was carried out at the Department of Building Construction HB2 in 2004. The goal of the study was to find innovative solutions for space system design through the application of bionic (biomimetic) approaches. Using specific research both fields as the foundation, five different architectural projects based on a scientific-technological concept were developed. The introduction of natural role models into the design process and the development of the application in space and the respective setting proved to be a difficult task within the timeframe of a design program, nonetheless all of the projects show very innovative aspects.

  12. A Bionic Neural Link for peripheral nerve repair.

    Science.gov (United States)

    Xu, Yong Ping; Yen, Shih-Cheng; Ng, Kian Ann; Liu, Xu; Tan, Ter Chyan

    2012-01-01

    Peripheral nerve injuries with large gaps and long nerve regrowth paths are difficult to repair using existing surgical techniques, due to nerve degeneration and muscle atrophy. This paper proposes a Bionic Neural Link (BNL) as an alternative way for peripheral nerve repair. The concept of the BNL is described, along with the hypothetical benefits. A prototype monolithic single channel BNL has been developed, which consists of 16 neural recording channels and one stimulation channel, and is implemented in a 0.35-µm CMOS technology. The BNL has been tested in in-vivo animal experiments. Full function of the BNL chip has been demonstrated.

  13. Micromechanical resonator array for an implantable bionic ear.

    Science.gov (United States)

    Bachman, Mark; Zeng, Fan-Gang; Xu, Tao; Li, G-P

    2006-01-01

    In this paper we report on a multi-resonant transducer that may be used to replace a traditional speech processor in cochlear implant applications. The transducer, made from an array of micro-machined polymer resonators, is capable of passively splitting sound into its frequency sub-bands without the need for analog-to-digital conversion and subsequent digital processing. Since all bands are mechanically filtered in parallel, there is low latency in the output signals. The simplicity of the device, high channel capability, low power requirements, and small form factor (less than 1 cm) make it a good candidate for a completely implantable bionic ear device.

  14. Research on Tripod Gait of Bionic Hexapod Robot

    Directory of Open Access Journals (Sweden)

    Wei Jiang-shu

    2013-07-01

    Full Text Available Based on the bionic theory and the analyzed of movement mechanism for six-legged insect, the principle of tripod gait movement for walking robot was analyzed in this paper, and basic parameters and the principle of relative movement theory on gait research were discussed. Then the hexapod walking robot was assembled by using the component of Fischertechnik. With the characters of simple connective structure, unique design, this robot can walk forward and backward and can avoid mini-barrier. The experiment showed that this robot has good mobility and stability.  

  15. Noninvasive transcutaneous bionic baroreflex system prevents severe orthostatic hypotension in patients with spinal cord injury.

    Science.gov (United States)

    Yoshida, Masayoshi; Murayama, Yoshinori; Chishaki, Akiko; Sunagawa, Kenji

    2008-01-01

    Central baroreflex failure in patients with spinal cord injury results in serious orthostatic hypotension. We examined if transcutaneous electrical stimulation regulates arterial pressure in those patients. We identified skin regions capable of increasing arterial pressure and determined respective transfer function. Using the transfer function, we designed the feedback regulator (i.e., bionic baroreflex system) to control arterial pressure. Orthostatic stress decreased arterial pressure profoundly. Activation of bionic regulator restored and maintained arterial pressure at pre-specified levels. We conclude that the transcutaneous bionic system is noninvasive and capable of stabilizing arterial pressure in patients with spinal cord injury.

  16. Bionic optimization research of soil cultivating component design

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The basic biomechanical laws that apply to the clawed toes of animals with powerful digging abilities and the optimal bionic design of curved soil cultivating components with an analogous contour were researched in a novel way. First, the curvature and profile of the inside contour line of a field mouse’s clawed toe were analyzed. The finite element method (FEM) was then used to simulate the working process in order to study the changing characteristics of the working resistance of bionic soil- engag- ing surfaces and the stress field of the processed soil. A straight-line cultivating component was used for comparative analysis. In accordance with the simulation results, a series of soil cultivating com- ponents of varying design were manufactured. An indoor soil bin experiment was carried out to meas- ure their working resistance and validate the results of the FEM analysis. The results of this research would have important values in the optimization design of cultivating components for energy and cost savings.

  17. Constructs of highly effective heat transport paths by bionic optimization

    Institute of Scientific and Technical Information of China (English)

    CHENG; Xinguang; (程新广); LI; Zhixin; (李志信); GUO; Zengyuan; (过增元)

    2003-01-01

    The optimization approach based on the biological evolution principle is used to construct the heat transport paths for volume-to-point problem. The transport paths are constructed by inserting high conductivity materials in the heat conduction domain where uniform or nonuniform heat sources exist. In the bionic optimization process, the optimal constructs of the high conductivity material are obtained by numerically simulating the evolution and degeneration process according to the uniformity principle of the temperature gradient. Finally, preserving the features of the optimal constructs, the constructs are regularized for the convenience of engineering manufacture. The results show that the construct obtained by bionic optimization is approximate to that obtained by the tree-network constructal theory when the heat conduction is enhanced for the domain with a uniform heat source and high conductivity ratio of the inserting material to the substrate, the high conductivity materials are mainly concentrated on the heat outlet for the case with a uniform heat source and low thermal conductivity ratio, and for the case with nonuniform heat sources, the high conductivity material is concentrated in the heat source regions and construacts several highly effective heat transport paths to connect the regions to the outlet.

  18. Numerical Simulation for Hydrodynamic Characteristics of A Bionic Flapping Hydrofoil

    Institute of Scientific and Technical Information of China (English)

    SU Yu-min; WANG Zhao-li; ZHANG Xi; GUO Bing-jie

    2012-01-01

    In order to study the propulsion mechanism of the bionic flapping hydrofoil (BFH),a 2-DoF (heave and pitch)motion model is formulated.The hydrodynamic performance of BFH with a series of kinematical parameters is explored via numerical simulation based on FLUENT.The calculated result is compared with the experimental value of MIT and that by the panel method.Moreover,the effect of inlet velocity,the angle of attack,the heave amplitude,the pitch amplitude,the phase difference,the heave biased angle,the pitch biased angle and the oscillating frequency are investigated.The study is useful for guiding the design of bionic underwater vehicle based on flapping propulsion.It is indicated that the optimal parameters combination is v =0.5 m/s,φ0 =40°,θ0 =30°,ψ =90°,φbias =0°,θbias =0°and f =0.5 Hz.

  19. Cell-bionics: tools for real-time sensor processing.

    Science.gov (United States)

    Toumazou, Chris; Cass, Tony

    2007-08-29

    The accurate monitoring of the physiological status of cells, tissues and whole organisms demands a new generation of devices capable of providing accurate data in real time with minimal perturbation of the system being measured. To deliver on the promise of cell-bionics advances over the past decade in miniaturization, analogue signal processing, low-power electronics, materials science and protein engineering need to be brought together. In this paper we summarize recent advances in our research that is moving us in this direction. Two areas in particular are highlighted: the exploitation of the physical properties inherent in semiconductor devices to perform very low power on chip signal processing and the use of gene technology to tailor proteins for sensor applications. In the context of engineered tissues, cell-bionics could offer the ability to monitor the precise physiological state of the construct, both during 'manufacture' and post-implantation. Monitoring during manufacture, particularly by embedded devices, would offer quality assurance of the materials components and the fabrication process. Post-implantation monitoring would reveal changes in the underlying physiology as a result of the tissue construct adapting to its new environment.

  20. Computational and experimental study on dynamic behavior of underwater robots propelled by bionic undulating fins

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Bionic undulating fins, inspired by undulations of the median and/or paired fin (MPF) fish, have a bright prospective for un-derwater missions with higher maneuverability, lower noisy, and higher efficiency. In the present study, a coupled computa-tional fluid dynamics (CFD) model was proposed and implemented to facilitate numerical simulations on hydrodynamic ef-fects of the bionic undulating robots. Hydrodynamic behaviors of underwater robots propelled by two bionic undulating fins were computationally and experimentally studied within the three typical desired movement patterns, i.e., marching, yawing and yawing-while-marching. Moreover, several specific phenomena in the bionic undulation mode were unveiled and dis-cussed by comparison between the CFD and experimental results under the same kinematics parameter sets. The contributed work on the dynamic behavior of the undulating robots is of importance for study on the propulsion mechanism and control algorithms.

  1. Bionic Design of Wind Turbine Blade Based on Long-Eared Owl's Airfoil

    Science.gov (United States)

    Li, Ming

    2017-01-01

    The main purpose of this paper is to demonstrate a bionic design for the airfoil of wind turbines inspired by the morphology of Long-eared Owl's wings. Glauert Model was adopted to design the standard blade and the bionic blade, respectively. Numerical analysis method was utilized to study the aerodynamic characteristics of the airfoils as well as the blades. Results show that the bionic airfoil inspired by the airfoil at the 50% aspect ratio of the Long-eared Owl's wing gives rise to a superior lift coefficient and stalling performance and thus can be beneficial to improving the performance of the wind turbine blade. Also, the efficiency of the bionic blade in wind turbine blades tests increases by 12% or above (up to 44%) compared to that of the standard blade. The reason lies in the bigger pressure difference between the upper and lower surface which can provide stronger lift. PMID:28243053

  2. Bionic Design of Wind Turbine Blade Based on Long-Eared Owl's Airfoil.

    Science.gov (United States)

    Tian, Weijun; Yang, Zhen; Zhang, Qi; Wang, Jiyue; Li, Ming; Ma, Yi; Cong, Qian

    2017-01-01

    The main purpose of this paper is to demonstrate a bionic design for the airfoil of wind turbines inspired by the morphology of Long-eared Owl's wings. Glauert Model was adopted to design the standard blade and the bionic blade, respectively. Numerical analysis method was utilized to study the aerodynamic characteristics of the airfoils as well as the blades. Results show that the bionic airfoil inspired by the airfoil at the 50% aspect ratio of the Long-eared Owl's wing gives rise to a superior lift coefficient and stalling performance and thus can be beneficial to improving the performance of the wind turbine blade. Also, the efficiency of the bionic blade in wind turbine blades tests increases by 12% or above (up to 44%) compared to that of the standard blade. The reason lies in the bigger pressure difference between the upper and lower surface which can provide stronger lift.

  3. Anaerobic digestion of corn stovers for methane production in a novel bionic reactor.

    Science.gov (United States)

    Zhang, Meixia; Zhang, Guangming; Zhang, Panyue; Fan, Shiyang; Jin, Shuguang; Wu, Dan; Fang, Wei

    2014-08-01

    To improve the biogas production from corn stovers, a new bionic reactor was designed and constructed. The bionic reactor simulated the rumen digestion of ruminants. The liquid was separated from corn stovers and refluxed into corn stovers again, which simulated the undigested particles separated from completely digested materials and fed back again for further degradation in ruminant stomach. Results showed that the bionic reactor was effective for anaerobic digestion of corn stovers. The liquid amount and its reflux showed an obvious positive correlation with biogas production. The highest biogas production rate was 21.6 ml/gVS-addedd, and the total cumulative biogas production was 256.5 ml/gVS-added. The methane content in biogas ranged from 52.2% to 63.3%. The degradation of corn stovers were greatly enhanced through simulating the animal digestion mechanisms in this bionic reactor.

  4. Architectural solutions in terms of Bionic urban environment of Olympic Sochi

    Directory of Open Access Journals (Sweden)

    Olga V. Kiba

    2010-10-01

    Full Text Available The principle of architectural bionics, suitable for Olympic Sochi environment was used for promenade designing. The complex solution includes promenade areas and a ‘winter and summer’ platform.

  5. Simulated effect on the compressive and shear mechanical properties of bionic integrated honeycomb plates.

    Science.gov (United States)

    He, Chenglin; Chen, Jinxiang; Wu, Zhishen; Xie, Juan; Zu, Qiao; Lu, Yun

    2015-05-01

    Honeycomb plates can be applied in many fields, including furniture manufacturing, mechanical engineering, civil engineering, transportation and aerospace. In the present study, we discuss the simulated effect on the mechanical properties of bionic integrated honeycomb plates by investigating the compressive and shear failure modes and the mechanical properties of trabeculae reinforced by long or short fibers. The results indicate that the simulated effect represents approximately 80% and 70% of the compressive and shear strengths, respectively. Compared with existing bionic samples, the mass-specific strength was significantly improved. Therefore, this integrated honeycomb technology remains the most effective method for the trial manufacturing of bionic integrated honeycomb plates. The simulated effect of the compressive rigidity is approximately 85%. The short-fiber trabeculae have an advantage over the long-fiber trabeculae in terms of shear rigidity, which provides new evidence for the application of integrated bionic honeycomb plates.

  6. The fluid control mechanism of bionic structural heterogeneous composite materials and its potential application in enhancing pump efficiency

    Directory of Open Access Journals (Sweden)

    Limei Tian

    2015-11-01

    Full Text Available Studies have shown that the structure of dolphin skin controls fluid media dynamically. Gaining inspiration from this phenomenon, a kind of bionic structural heterogeneous composite material was designed. The bionic structural heterogeneous composite material is composed of two materials: a rigid metal base layer with bionic structures and an elastic polymer surface layer with the corresponding mirror structures. The fluid control mechanism of the bionic structural heterogeneous composite material was investigated using a fluid–solid interaction method in ANSYS Workbench. The results indicated that the bionic structural heterogeneous composite material’s fluid control mechanism is its elastic deformation, which is caused by the coupling action between the elastic surface material and the bionic structure. This deformation can decrease the velocity gradient of the fluid boundary layer through changing the fluid–solid actual contact surface and reduce the frictional force. The bionic structural heterogeneous composite material can also absorb some energy through elastic deformation and avoid energy loss. The bionic structural heterogeneous composite material was applied to the impeller of a centrifugal pump in a contrast experiment, increasing the pump efficiency by 5% without changing the hydraulic model of the impeller. The development of this bionic structural heterogeneous composite material will be straightforward from an engineering point of view, and it will have valuable practical applications.

  7. Ego-motion based on EM for bionic navigation

    Science.gov (United States)

    Yue, Xiaofeng; Wang, L. J.; Liu, J. G.

    2015-12-01

    Researches have proved that flying insects such as bees can achieve efficient and robust flight control, and biologists have explored some biomimetic principles regarding how they control flight. Based on those basic studies and principles acquired from the flying insects, this paper proposes a different solution of recovering ego-motion for low level navigation. Firstly, a new type of entropy flow is provided to calculate the motion parameters. Secondly, EKF, which has been used for navigation for some years to correct accumulated error, and estimation-Maximization, which is always used to estimate parameters, are put together to determine the ego-motion estimation of aerial vehicles. Numerical simulation on MATLAB has proved that this navigation system provides more accurate position and smaller mean absolute error than pure optical flow navigation. This paper has done pioneering work in bionic mechanism to space navigation.

  8. Bionic intraocular lens with variable focus and integrated structure

    Science.gov (United States)

    Liang, Dan; Wang, Xuan-Yin; Du, Jia-Wei; Xiang, Ke

    2015-10-01

    This paper proposes a bionic accommodating intraocular lens (IOL) for ophthalmic surgery. The designed lens has a solid-liquid mixed integrated structure, which mainly consists of a support ring, elastic membrane, rigid lens, and optical liquid. The lens focus can be adjusted through the deformation of the lens front surface when compressed. The integrated structure of the IOL is presented, as well as a detailed description of the lens materials and fabrication process. Images under different radial pressures are captured, and the lens deformation process, accommodating range, density, and optical property are analyzed. The designed lens achieves a 14.6 D accommodating range under a radial pressure of 51.4 mN and a 0.24 mm alteration of the lens outer radius. The deformation property of the lens matches well with the characteristic of the eye and shows the potential to help patients fully recover their vision accommodation ability after the cataract surgery.

  9. Porous structures of natural materials and bionic design

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    This investigation and morphology analysis of porous structure of some kinds of natural materials such as chicken eggshell, partridge eggshell, pig bone, and seeds of mung bean, soja, ginkgo, lotus seed, as well as the epidermis of apples, with SEM (Scanning Electronic Microscope) showed that natural structures' pores can be classified into uniform pores, gradient pores and multi pores from the viewpoint of the distribution variation of pore density, size and geometry. Furthermore, an optimal design of porous bearings was for the first time developed based on the gradient configuration of natural materials. The bionic design of porous structures is predicted to be widely developed and applied in the fields of materials and mechanical engineering in the future.

  10. Organic, bionics & blob design - conceptual and methodological clarification

    DEFF Research Database (Denmark)

    Thomsen, Bente Dahl

    2015-01-01

    Industrial design is a young field of science that works together with many disciplines, borrows concepts and constructs metaphors for product characterization and phenomenon description. The meaning of the penetrative or constructed concepts is crystallized over time through academic writings...... and discussions. Organic, Bionics and Blob Design is an example of such a vague concept. Vague concepts create confusion when the concepts are used in academic texts and in course descriptions, which should be understandable across international research and by exchange students. This article discusses the Tripod...... approach as a possible method to clarify meaning and as an aid to students' development of a technical terminology. The concepts must be used in the same context, in this example the context is Natural Design, and represent different analytical angles on scientific issues. The three concepts of Organic...

  11. Unifying inflation with late-time acceleration in BIonic system

    CERN Document Server

    Sepehri, Alireza; Setare, Mohammad Reza; Pradhan, Anirudh; Capozziello, Salvatore; Sardar, Iftikar Hossain

    2015-01-01

    In this research, we propose a new model that allows to unify inflation, deceleration and acceleration phases of expansion history in BIonic system. In this model, in the beginning, there have been $k$ black fundamental strings that transited to the BIon configuration at a corresponding point. At this point, two universe brane and universe antibrane have been created, interacted with each other via one wormhole and inflated. With decreasing temperature, the energy of this wormhole flowed into universe branes and lead to inflation. After a short time, wormhole died, inflation ended and deceleration epoch started. With approaching two universe brane and antibrane together, tachyon was born, grew and caused creation of one new wormhole. At this time, two universe brane and antibrane connected again and late-time acceleration era of the universe began. We compare our model with previous unified phantom model and observational data and obtain some cosmological parameters like temperature in terms of time. We also ...

  12. Emergence and expansion of cosmic space in BIonic system

    Energy Technology Data Exchange (ETDEWEB)

    Sepehri, A., E-mail: alireza.sepehri@uk.ac.ir [Faculty of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of); Rahaman, Farook, E-mail: rahaman@iucaa.ernet.in [Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal (India); Pradhan, Anirudh, E-mail: pradhan@iucaa.ernet.in [Department of Mathematics, GLA University, Mathura-281 406, U.P. (India); Sardar, Iftikar Hossain, E-mail: iftikar.spm@gmail.com [Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal (India)

    2015-02-04

    Recently, Padmanabhan [ (arXiv:1206.4916 [hep-th])] argued that the expansion rate of the universe can be thought of as the emergence of space as cosmic time progresses and is related to the difference between the surface degrees of freedom on the holographic horizon and the bulk degrees of freedom inside. The main question arises as to what is the origin of emergence of space in 4D universe. We answer this question in BIonic system. The BIon is a configuration in flat space of a D-brane and a parallel anti-D-brane connected by a thin shell wormhole with F-string charge. We propose a new model that allows that all degrees of freedom inside and outside the universe are controlled by the evolutions of BIon in extra dimension and tend to degrees of freedom of black F-string in string theory or black M2-brane in M-theory.

  13. Medicalization: Current concept and future directions in a Bionic Society

    Directory of Open Access Journals (Sweden)

    Antonio Maturo

    2012-01-01

    Full Text Available The article illustrates the main features of the concept of medicalization, starting from its theoretical roots. Although it is the process of extending the medical gaze on human conditions, it appears that medicalization cannot be strictly connected to medical imperialism anymore. Other "engines" of medicalization are influential: consumers, biotechnology and managed care. The growth of research and theoretical reflections on medicalization has led to the proposal of other parallel concepts like pharmaceuticalization, genetization and biomedicalization. These new theoretical tools could be useful in the analysis of human enhancement. Human enhancement can be considered as the use of biomedical technology to improve performance on a human being who is not in need of a cure: a practice that is increasingly spreading in what might be defined as a "bionic society".

  14. Emergence and Expansion of Cosmic Space in BIonic system

    CERN Document Server

    Sepehri, A; Pradhan, Anirudh; Sardar, Iftikar Hossain

    2015-01-01

    Recently, Padmanabhan [arXiv:1206.4916] argued that the expansion rate of the universe can be thought of as the emergence of space as cosmic time progresses and is related to the difference between the surface degrees of freedom on the holographic horizon and the bulk degrees of freedom inside. The main question arises as to what is origin of emergence of space in 4D universe? We answer to this question in BIonic system. The BIon is a configuration in flat space of a D-brane and a parallel anti-D-brane connected by a thin shell wormhole with F-string charge. We propose a new model that allows all degrees of freedom inside and outside the universe are controlled by the evolutions of BIon in extra dimension and tend to degrees of freedom of black F-string in string theory or black M2-brane in M theory.

  15. BIONic WalkAide for correcting foot drop.

    Science.gov (United States)

    Weber, Douglas J; Stein, Richard B; Chan, K Ming; Loeb, Gerald; Richmond, Frances; Rolf, Robert; James, Kelly; Chong, Su Ling

    2005-06-01

    The goal of this study was to test the feasibility and efficacy of using microstimulators (BIONs) to correct foot drop, the first human application of BIONs in functional electrical stimulation (FES). A prototype BIONic foot drop stimulator was developed by modifying a WalkAide2 stimulator to control BION stimulation of the ankle dorsiflexor muscles. BION stimulation was compared with surface stimulation of the common peroneal nerve provided by a normal WalkAide2 foot drop stimulator. Compared to surface stimulation, we found that BION stimulation of the deep peroneal nerve produces a more balanced ankle flexion movement without everting the foot. A three-dimensional motion analysis was performed to measure the ankle and foot kinematics with and without stimulation. Without stimulation, the toe on the affected leg drags across the ground. The BIONic WalkAide elevates the foot such that the toe clears the ground by 3 cm, which is equivalent to the toe clearance in the unaffected leg. The physiological cost index (PCI) was used to measure effort during walking. The PCI is high without stimulation (2.29 +/- 0.37; mean +/- S.D.) and greatly reduced with surface (1.29 +/- 0.10) and BION stimulation (1.46 +/- 0.24). Also, walking speed is increased from 9.4 +/- 0.4 m/min without stimulation to 19.6 +/- 2.0 m/min with surface and 17.8 +/- 0.7 m/min with BION stimulation. We conclude that functional electrical stimulation with BIONs is a practical alternative to surface stimulation and provides more selective control of muscle activation.

  16. [Design and Preparation of Plant Bionic Materials Based on Optical and Infrared Features Simulation].

    Science.gov (United States)

    Jiang, Xiao-jun; Lu, Xu-liang; Pan, Jia-liang; Zhang, Shuan-qin

    2015-07-01

    Due to the life characteristics such as physiological structure and transpiration, plants have unique optical and infrared features. In the optical band, because of the common effects of chlorophyll and water, plant leafs show spectral reflectance characteristics change in 550, 680, 1400 and 1900 nm significantly. In the infrared wave band, driven by transpiration, plants could regulate temperature on their own initiative, which make the infrared characteristics of plants different from artificial materials. So palnt bionic materials were proposed to simulate optical and infrared characteristics of plants. By analyzing formation mechanism of optical and infrared features about green plants, the component design and heat-transfer process of plants bionic materials were studied, above these the heat-transfer control formulation was established. Based on water adsorption/release compound, optical pigments and other man-made materials, plant bionic materials preparation methods were designed which could simulate the optical and infrared features of green plants. By chemical casting methods plant bionic material films were prepared, which use polyvinyl alcohol as film forming and water adsorption/release compound, and use optical pigments like chrome green and macromolecule yellow as colouring materials. The research conclusions achieved by testings figured out: water adsorption/release testing showed that the plant bionic materials with a certain thickness could absorb 1.3 kg water per square meter, which could satisfy the water usage of transpiration simulation one day; the optical and infrared simulated effect tests indicated that the plant bionic materials could preferably simulate the spectral reflective performance of green plants in optical wave band (380-2500 nm, expecially in 1400 and 1900 nm which were water absorption wave band of plants), and also it had similar daily infrared radiation variations with green plants, daily average radiation temperature

  17. Effect of bionic coupling units' forms on wear resistance of gray cast iron under dry linear reciprocating sliding condition

    Science.gov (United States)

    Pang, Zuobo; Zhou, Hong; Xie, Guofeng; Cong, Dalong; Meng, Chao; Ren, Luquan

    2015-07-01

    In order to get close to the wear form of guide rails, the homemade linear reciprocating wear testing machine was used for the wear test. In order to improve the wear-resistance of gray cast iron guide rail, bionic coupling units of different forms were manufactured by a laser. Wear behavior of gray-cast-iron with bionic-coupling units has been studied under dry sliding condition at room temperature using the wear testing machine. The wear resistance was evaluated by means of weight loss measurement and wear morphology. The results indicated that bionic coupling unit could improve the wear resistance of gray cast iron. The wear resistance of gray cast iron with reticulation bionic coupling unit is the best. When the load and speed changed, reticulation bionic coupling unit still has excellent performance in improving the wear resistance of gray cast iron.

  18. Bionic Design for Mars Sampling Scoop Inspired by Himalayan Marmot Claw

    Directory of Open Access Journals (Sweden)

    Long Xue

    2016-01-01

    Full Text Available Cave animals are often adapted to digging and life underground, with claw toes similar in structure and function to a sampling scoop. In this paper, the clawed toes of the Himalayan marmot were selected as a biological prototype for bionic research. Based on geometric parameter optimization of the clawed toes, a bionic sampling scoop for use on Mars was designed. Using a 3D laser scanner, the point cloud data of the second front claw toe was acquired. Parametric equations and contour curves for the claw were then built with cubic polynomial fitting. We obtained 18 characteristic curve equations for the internal and external contours of the claw. A bionic sampling scoop was designed according to the structural parameters of Curiosity’s sampling shovel and the contours of the Himalayan marmot’s claw. Verifying test results showed that when the penetration angle was 45° and the sampling speed was 0.33 r/min, the bionic sampling scoops’ resistance torque was 49.6% less than that of the prototype sampling scoop. When the penetration angle was 60° and the sampling speed was 0.22 r/min, the resistance torque of the bionic sampling scoop was 28.8% lower than that of the prototype sampling scoop.

  19. A Numerical Study of Aerodynamic Performance and Noise of a Bionic Airfoil Based on Owl Wing

    Directory of Open Access Journals (Sweden)

    Xiaomin Liu

    2014-08-01

    Full Text Available Noise reduction and efficiency enhancement are the two important directions in the development of the multiblade centrifugal fan. In this study, we attempt to develop a bionic airfoil based on the owl wing and investigate its aerodynamic performance and noise-reduction mechanism at the relatively low Reynolds number. Firstly, according to the geometric characteristics of the owl wing, a bionic airfoil is constructed as the object of study at Reynolds number of 12,300. Secondly, the large eddy simulation (LES with the Smagorinsky model is adopted to numerically simulate the unsteady flow fields around the bionic airfoil and the standard NACA0006 airfoil. And then, the acoustic sources are extracted from the unsteady flow field data, and the Ffowcs Williams-Hawkings (FW-H equation based on Lighthill's acoustic theory is solved to predict the propagation of these acoustic sources. The numerical results show that the lift-to-drag ratio of bionic airfoil is higher than that of the traditional NACA 0006 airfoil because of its deeply concave lower surface geometry. Finally, the sound field of the bionic airfoil is analyzed in detail. The distribution of the A-weighted sound pressure levels, the scaled directivity of the sound, and the distribution of dP/dt on the airfoil surface are provided so that the characteristics of the acoustic sources could be revealed.

  20. Bionic Design for Mars Sampling Scoop Inspired by Himalayan Marmot Claw

    Science.gov (United States)

    2016-01-01

    Cave animals are often adapted to digging and life underground, with claw toes similar in structure and function to a sampling scoop. In this paper, the clawed toes of the Himalayan marmot were selected as a biological prototype for bionic research. Based on geometric parameter optimization of the clawed toes, a bionic sampling scoop for use on Mars was designed. Using a 3D laser scanner, the point cloud data of the second front claw toe was acquired. Parametric equations and contour curves for the claw were then built with cubic polynomial fitting. We obtained 18 characteristic curve equations for the internal and external contours of the claw. A bionic sampling scoop was designed according to the structural parameters of Curiosity's sampling shovel and the contours of the Himalayan marmot's claw. Verifying test results showed that when the penetration angle was 45° and the sampling speed was 0.33 r/min, the bionic sampling scoops' resistance torque was 49.6% less than that of the prototype sampling scoop. When the penetration angle was 60° and the sampling speed was 0.22 r/min, the resistance torque of the bionic sampling scoop was 28.8% lower than that of the prototype sampling scoop. PMID:28127229

  1. Lightweight Design and Verification of Gantry Machining Center Crossbeam Based on Structural Bionics

    Institute of Scientific and Technical Information of China (English)

    Ling Zhao; Jianfeng Ma; Wuyi Chen; Hongliang Guo

    2011-01-01

    The lightweight and high efficiency of natural structures are the inexhaustible sources for engineering improvements. The goal of the study is to find innovative solutions for mechanical lightweight design through the application of structural bionic approaches. Giant waterlily leaf ribs and cactus stem are investigated for their optimal framework and superior performance.Their structural characteristics are extracted and used in the bio-inspired design of Lin MC6000 gantry machining center crossbeam. By mimicking analogous network structure, the bionic model is established, which has better load-carrying capacity than conventional distribution. Finite Element Method (FEM) is used for numerical simulation. Results show better specific stiffness of the bionic model, which is increased by 17.36%. Finally the scaled models are fabricated by precision casting for static and dynamic tests. The physical experiments are compared to numerical simulation. The results show that the maximum static deformation of the bionic model is reduced by about 16.22%, with 3.31% weight reduction. In addition, the first four natural frequencies are improved obviously. The structural bionic design is a valuable reference for updating conventional mechanical structures with better performance and less material consumption.

  2. Numerical Experiment of the Solid Particle Erosion of Bionic Configuration Blade of Centrifugal Fan

    Institute of Scientific and Technical Information of China (English)

    Junqiu ZHANG; Zhiwu HAN; Wei YIN; Huiyuan WANG; Chao GE; Jialian JIANG

    2013-01-01

    In this paper,a bionic method was presented to improve the erosion resistance of blade of the centrifugal fan.A numerical investigation of the solid particle erosion on the standard and bionic configuration blade of 4-72N_o10C centrifugal fan was presented.The numerical study employs computational fluid dynamics (CFD) software,based on a finite volume method,in which the discrete phase model was used to modele the solid particles flow,and the Eulerian conservation equation was adopt to simulate the continuous phase.Moreover,user-defined function was used to define wear equation.The various diameters of the particles were taken into account.The positions of collision of standard and bionic fan blades were discussed,and two kinds of centrifugal fan blade wear were compared.The results show that the particles from the incident source with different positions have different processes of turning and movement when enter into the impeller.The trajectories of flow in the fan channel are significantly different for the particles with different diameters.Bionic fan blade have lower erosion rate than the standard fan blade when the particle size is 20 μm.The anti-erosion mechanism of the bionic fan blade was discussed.

  3. Bionic optimization in structural design stochastically based methods to improve the performance of parts and assemblies

    CERN Document Server

    Gekeler, Simon

    2016-01-01

    The book provides suggestions on how to start using bionic optimization methods, including pseudo-code examples of each of the important approaches and outlines of how to improve them. The most efficient methods for accelerating the studies are discussed. These include the selection of size and generations of a study’s parameters, modification of these driving parameters, switching to gradient methods when approaching local maxima, and the use of parallel working hardware. Bionic Optimization means finding the best solution to a problem using methods found in nature. As Evolutionary Strategies and Particle Swarm Optimization seem to be the most important methods for structural optimization, we primarily focus on them. Other methods such as neural nets or ant colonies are more suited to control or process studies, so their basic ideas are outlined in order to motivate readers to start using them. A set of sample applications shows how Bionic Optimization works in practice. From academic studies on simple fra...

  4. Design and Implementation of a Bionic Mimosa Robot with Delicate Leaf Swing Behavior

    Directory of Open Access Journals (Sweden)

    Chung-Liang Chang

    2014-12-01

    Full Text Available This study designed and developed a bionic mimosa robot with delicate leaf swing behaviors. For different swing behaviors, this study developed a variety of situations, in which the bionic mimosa robot would display different postures. The core technologies used were Shape Memory Alloys (SMAs, plastic material, and an intelligent control device. The technology particularly focused on the SMAs memory processing bend mode, directional guidance, and the position of SMAs installed inside the plastic material. Performance analysis and evaluation were conducted using two SMAs for mimosa opening/closing behaviors. Finally, by controlling the mimosa behavior with a micro-controller, the optimal strain swing behavior was realized through fuzzy logic control in order to display the different postures of mimosa under different situations. The proposed method is applicable to micro-bionic robot systems, entertainment robots, biomedical engineering, and architectural aesthetics-related fields in the future.

  5. From Hearing Aids, Prostheses and Cochlear Implants to "Bionic" Feedback Phonation

    Directory of Open Access Journals (Sweden)

    Petros Stagiopoulos

    2016-08-01

    Full Text Available In Otorhinolaryngological medical practice therapeutic devices are used that are highly invasive and immersive. For aural and oral communication these could be hearing aids, prosthetics, implants or radio-electronic appliances that build up a bionic environment with apparent tendencies for virtualization. The popularization of such devices promotes the extensive use of Brain Computer Interfaces to both the scientific community and the consumer market. The use of bionic devices clinched with synapses of the nerves does not merely mingle input activity to brain activity, but also it provides a virtual channel for augmenting and manipulating speech communication, language communication and even further musical communication. The effects of bionic aural and oral communication when learning practices for the impaired in hearing are applied is encountered in terms of ability for speech perception and linguistic competence

  6. Computer simulation of rolling wear on bionic non-smooth convex surfaces

    Institute of Scientific and Technical Information of China (English)

    HAN Zhi-wu; LIU Zu-bin; YANG Zhuo-juan; YAN Yu-ying; REN Lu-quan

    2004-01-01

    The study of bionics has found that the skins of many burrow animals which live in soil and stone conditions have an anti wear function, and which is related to their body surfaces' non-smooth morphology. In the present study, bionic non-smooth surfaces are used in roll surface design, and roll models with convex non-smooth surfaces are developed. The rolling wear of non-smooth roll in steel rolling is simulated by the FEM software-ANSYS. The equivalent stress, the node friction stress, and the node contact pressure between the roll and the rolling piece are calculated; and the anti-wear mechanism is analyzed.

  7. Numerical Study on Hydrodynamic Performance of Bionic Caudal Fin

    Directory of Open Access Journals (Sweden)

    Kai Zhou

    2016-01-01

    Full Text Available In this work, numerical simulations are conducted to reveal the hydrodynamic mechanism of caudal fin propulsion. In the modeling of a bionic caudal fin, a universal kinematics model with three degrees of freedom is adopted and the flexible deformation in the spanwise direction is considered. Navier-Stokes equations are used to solve the unsteady fluid flow and dynamic mesh method is applied to track the locomotion. The force coefficients, torque coefficient, and flow field characteristics are extracted and analyzed. Then the thrust efficiency is calculated. In order to verify validity and feasibility of the algorithm, hydrodynamic performance of flapping foil is analyzed. The present results of flapping foil compare well with those in experimental researches. After that, the influences of amplitude of angle of attack, amplitude of heave motion, Strouhal number, and spanwise flexibility are analyzed. The results show that, the performance can be improved by adjusting the motion and flexibility parameters. The spanwise flexibility of caudal fin can increase thrust force with high propulsive efficiency.

  8. Graphene-Based Bionic Composites with Multifunctional and Repairing Properties.

    Science.gov (United States)

    Valentini, L; Bittolo Bon, S; Signetti, S; Pugno, N M

    2016-03-01

    In this work, a novel bionic composite inspired by the concept of yeast fermentation has been proposed. It was observed that the addition of graphene nanoplatelets during the fermentation of extract of Saccharomyces cerevisiae fungi allows coupling of the graphene sheets to the yeast cell wall. This process resulted in the formation of a composite film with improved mechanical and electrical properties along with the capability of converting the light stimulus in the electrical signal. The mechanical properties of the prepared composites, namely, the fracture strength and Young's modulus, were studied via numerical simulations and are related to the properties of the constituent phases via rules of mixture. Finally, it was observed that graphene nanoplatelets, added to the nutrient broth, were able to reassemble onto the stressed cell surface and repair the surface cracking, partially restoring the pristine electrical and mechanical properties. The method reported here may find potential application in the development of self-healable bioelectronic devices and microorganism-based strain and chemical biosensors.

  9. Nanocarbon-Coated Porous Anodic Alumina for Bionic Devices

    Directory of Open Access Journals (Sweden)

    Morteza Aramesh

    2015-08-01

    Full Text Available A highly-stable and biocompatible nanoporous electrode is demonstrated herein. The electrode is based on a porous anodic alumina which is conformally coated with an ultra-thin layer of diamond-like carbon. The nanocarbon coating plays an essential role for the chemical stability and biocompatibility of the electrodes; thus, the coated electrodes are ideally suited for biomedical applications. The corrosion resistance of the proposed electrodes was tested under extreme chemical conditions, such as in boiling acidic/alkali environments. The nanostructured morphology and the surface chemistry of the electrodes were maintained after wet/dry chemical corrosion tests. The non-cytotoxicity of the electrodes was tested by standard toxicity tests using mouse fibroblasts and cortical neurons. Furthermore, the cell–electrode interaction of cortical neurons with nanocarbon coated nanoporous anodic alumina was studied in vitro. Cortical neurons were found to attach and spread to the nanocarbon coated electrodes without using additional biomolecules, whilst no cell attachment was observed on the surface of the bare anodic alumina. Neurite growth appeared to be sensitive to nanotopographical features of the electrodes. The proposed electrodes show a great promise for practical applications such as retinal prostheses and bionic implants in general.

  10. A bionic camera-based polarization navigation sensor.

    Science.gov (United States)

    Wang, Daobin; Liang, Huawei; Zhu, Hui; Zhang, Shuai

    2014-07-21

    Navigation and positioning technology is closely related to our routine life activities, from travel to aerospace. Recently it has been found that Cataglyphis (a kind of desert ant) is able to detect the polarization direction of skylight and navigate according to this information. This paper presents a real-time bionic camera-based polarization navigation sensor. This sensor has two work modes: one is a single-point measurement mode and the other is a multi-point measurement mode. An indoor calibration experiment of the sensor has been done under a beam of standard polarized light. The experiment results show that after noise reduction the accuracy of the sensor can reach up to 0.3256°. It is also compared with GPS and INS (Inertial Navigation System) in the single-point measurement mode through an outdoor experiment. Through time compensation and location compensation, the sensor can be a useful alternative to GPS and INS. In addition, the sensor also can measure the polarization distribution pattern when it works in multi-point measurement mode.

  11. Biomimetic approaches to bionic touch through a peripheral nerve interface.

    Science.gov (United States)

    Saal, Hannes P; Bensmaia, Sliman J

    2015-12-01

    State-of-the-art prosthetic hands nearly match the dexterity of the human hand, and sophisticated approaches have been developed to control them intuitively. However, grasping and dexterously manipulating objects relies heavily on the sense of touch, without which we would struggle to perform even the most basic activities of daily living. Despite the importance of touch, not only in motor control but also in affective communication and embodiment, the restoration of touch through bionic hands is still in its infancy, a shortcoming that severely limits their effectiveness. Here, we focus on approaches to restore the sense of touch through an electrical interface with the peripheral nerve. First, we describe devices that can be chronically implanted in the nerve to electrically activate nerve fibers. Second, we discuss how these interfaces have been used to convey basic somatosensory feedback. Third, we review what is known about how the somatosensory nerve encodes information about grasped objects in intact limbs and discuss how these natural neural codes can be exploited to convey artificial tactile feedback. Finally, we offer a blueprint for how these codes could be implemented in a neuroprosthetic device to deliver rich, natural, and versatile tactile sensations.

  12. Material design related investigation. Investigation on the bionic design; Zairyo sekkei kankei chosa. Bionic design ni kansuru chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-03-01

    The biomolecular characteristics were analyzed to establish the basic technology for the utilization of artificial joint, liver and muscle. The rise in functional grade of biomolecules themselves, and inter-biomolecular recognition and bonding rationally and teleologically generates living body`s functions to form the structure and drive the molecules. Energywise extremely advantageous, those functions serve to creatively produce the artificial internal organs and elucidate the function of biotissue, if the tissue and function of living body can be artificially restructured by utilizing the biomolecular mechanism to make the tissue self-proper. It is the concept of bionic desing research. Methodologically, the inter-bimolecular action is to be synthetically analyzed through bio/physicochemistry-based computer simulation. The artificial materials excelling in adaptability to the living body are to be developed by analyzing the mechanism for the biotissue. The molecules-driving function is also to be analyzed which is generated dy the high-grade bonding of muscular and other high biomolecules. 280 refs., 69 figs., 9 tabs.

  13. Study on quantitative relation between characteristics of striature bionic coupling unit and wear resistance of gray cast iron

    Science.gov (United States)

    Pang, Zuobo; Zhou, Hong; Zhang, Peng; Cong, Dalong; Meng, Chao; Wang, Chuanwei; Ren, Luquan

    2015-03-01

    In order to improve the wear resistance of gray cast iron guide rail, striature bionic coupling units of different characteristics were manufactured by laser surface remelting. Wear behavior of gray cast iron with striature bionic coupling units has been studied under dry sliding condition at room temperature using a homemade linear reciprocating wear testing machine. The wear resistance was evaluated by means of weight loss measurement and wear morphology. The results indicated that there is a relationship between weight loss and the area of striature bionic coupling units and α: Δm = Δm0 - 0.0212S × cos α - 0.0241S × sin α.

  14. Rena Tangens & padeluun "bionic" / Rena Tangens, Padeluun ; interv. Tilman Baumgärtel

    Index Scriptorium Estoniae

    Tangens, Rena

    2006-01-01

    1997. a. Bielefeldis tehtud intervjuu sealsete kunstnike Rena Tangensi ja Padeluuniga, kes 1984. a. asutasid galerii "Art d'Ameublement", 1989. a. lõid elektroonilise kirjakasti "Bionic", osalevad Avaliku Liikuva ja Liikumatu Andmeringluse Edendamise Ühingu (FoeBud e. V:) liikmetena kongressidel, küsitlustel jm. ning peavad oma tegevust kunstiteose osaks

  15. Research advances in coupling bionic optimization design method for CNC machine tools based on ergonomics

    Directory of Open Access Journals (Sweden)

    Shihao LIU

    2015-06-01

    Full Text Available Currently, most Chinese CNC machine tools' dynamic and static performances have large gap comparing with the similar foreign products, and the CNC machine tools users' human-centered design demand are ignored, which results in that the domestic CNC machine tools' overall competitiveness is relatively low. In order to solve the above problem, the ergonomics and coupling bionics are adopted to study collaborative optimization design method for CNC machine tools based on the domestic and foreign machine tool design method research achievement. The CNC machine tools' "man-machine-environment" interaction mechanism can be built by combining with ergonomic, and then the CNC ergonomic design criteria is obtained. Taking the coupling bionics as theoretical basis, the biological structures "morphology-structure-function-adaptive growth" multiple coupling mechanism can be studied, and the mechanical performance benefits structure can be extracted, then the CNC machine tools structural coupling bionic design technology is obtained by combining with the similarity principle. Combination of CNC machine tools' ergonomic design criteria and coupling bionic design technology, and considering the CNC machine tool performance's interaction and coupling mechanisms, a new multi-objective optimization design method can be obtained, which is verified through CNC machine tools' prototype experiments. The new optimization design method for CNC machine tools can not only help improve the whole machine's dynamic and static performance, but also has a bright prospect because of the "man-oriented" design concept.

  16. Bionic ankle–foot prosthesis normalizes walking gait for persons with leg amputation

    Science.gov (United States)

    Herr, Hugh M.; Grabowski, Alena M.

    2012-01-01

    Over time, leg prostheses have improved in design, but have been incapable of actively adapting to different walking velocities in a manner comparable to a biological limb. People with a leg amputation using such commercially available passive-elastic prostheses require significantly more metabolic energy to walk at the same velocities, prefer to walk slower and have abnormal biomechanics compared with non-amputees. A bionic prosthesis has been developed that emulates the function of a biological ankle during level-ground walking, specifically providing the net positive work required for a range of walking velocities. We compared metabolic energy costs, preferred velocities and biomechanical patterns of seven people with a unilateral transtibial amputation using the bionic prosthesis and using their own passive-elastic prosthesis to those of seven non-amputees during level-ground walking. Compared with using a passive-elastic prosthesis, using the bionic prosthesis decreased metabolic cost by 8 per cent, increased trailing prosthetic leg mechanical work by 57 per cent and decreased the leading biological leg mechanical work by 10 per cent, on average, across walking velocities of 0.75–1.75 m s−1 and increased preferred walking velocity by 23 per cent. Using the bionic prosthesis resulted in metabolic energy costs, preferred walking velocities and biomechanical patterns that were not significantly different from people without an amputation. PMID:21752817

  17. Influence of Cycle Temperature on the Wear Resistance of Vermicular Iron Derivatized with Bionic Surfaces

    Science.gov (United States)

    Sui, Qi; Zhang, Peng; Zhou, Hong; Liu, Yan; Ren, Luquan

    2016-11-01

    Depending on their applications, such as in brake discs, camshafts, etc., the wear behavior of vermicular iron is influenced by the thermal cycling regime. The failure of a working part during its service life is a consequence of both thermal fatigue and wear. Previously, the wear and thermal fatigue resistance properties of vermicular iron were separately investigated by researchers, rather than a study combining these two factors. In the present work, the effect of cycle temperature on the wear resistance of specimens with bionic units processed by laser has been investigated experimentally. The wear behavior pre- and post-thermal cycling has also been investigated, and the influence of different cycle temperatures on the wear resistance is discussed. The results indicate that the thermal cycling regime brought about negative influences with varying degrees, on the material properties, such as the microstructures, micro-hardness, cracks, and oxidation resistance properties. All these factors synergistically reduced the wear resistance of vermicular iron. In particular, the negative influence apparently increased with an increase in cycle temperature. Nevertheless, the post-thermal-cycle wear resistance of the specimens with bionic units was superior to those without bionic units. Hence, the laser bionic process is an effective way to improve the performance of vermicular iron in combined thermal cycling and wear service conditions.

  18. Bionic ankle-foot prosthesis normalizes walking gait for persons with leg amputation.

    Science.gov (United States)

    Herr, Hugh M; Grabowski, Alena M

    2012-02-07

    Over time, leg prostheses have improved in design, but have been incapable of actively adapting to different walking velocities in a manner comparable to a biological limb. People with a leg amputation using such commercially available passive-elastic prostheses require significantly more metabolic energy to walk at the same velocities, prefer to walk slower and have abnormal biomechanics compared with non-amputees. A bionic prosthesis has been developed that emulates the function of a biological ankle during level-ground walking, specifically providing the net positive work required for a range of walking velocities. We compared metabolic energy costs, preferred velocities and biomechanical patterns of seven people with a unilateral transtibial amputation using the bionic prosthesis and using their own passive-elastic prosthesis to those of seven non-amputees during level-ground walking. Compared with using a passive-elastic prosthesis, using the bionic prosthesis decreased metabolic cost by 8 per cent, increased trailing prosthetic leg mechanical work by 57 per cent and decreased the leading biological leg mechanical work by 10 per cent, on average, across walking velocities of 0.75-1.75 m s(-1) and increased preferred walking velocity by 23 per cent. Using the bionic prosthesis resulted in metabolic energy costs, preferred walking velocities and biomechanical patterns that were not significantly different from people without an amputation.

  19. Electrocardiogram de-noising based on forward wavelet transform translation invariant application in bionic wavelet domain

    Indian Academy of Sciences (India)

    Mourad Talbi

    2014-08-01

    In this paper, we propose a new technique of Electrocardiogram (ECG) signal de-noising based on thresholding of the coefficients obtained from the application of the Forward Wavelet Transform Translation Invariant (FWT_TI) to each Bionic Wavelet coefficient. The De-noise De-noised ECG is obtained from the application of the inverse of BWT (BWT−1) to the de-noise de-noised bionic wavelet coefficients. For evaluating this new proposed de-noising technique, we have compared it to a thresholding technique in the FWT_TI domain. Preliminary tests of the application of the two de-noising techniques were constructed on a number of ECG signals taken from MIT-BIH database. The obtained results from Signal to Noise Ratio (SNR) and Mean Square Error (MSE) computations showed that our proposed de-noising technique outperforms the second technique. We have also compared the proposed technique to the thresholding technique in the bionic wavelet domain and this comparison was performed by SNR improvement computing. The obtained results from this evaluation showed that the proposed technique also outperforms the de-noising technique based on bionic wavelet coefficients thresholding.

  20. Experimental Study of Reciprocating Friction between Rape Stalk and Bionic Nonsmooth Surface Units

    Directory of Open Access Journals (Sweden)

    Zheng Ma

    2015-01-01

    Full Text Available Background. China is the largest producer of rape oilseed in the world; however, the mechanization level of rape harvest is relatively low, because rape materials easily adhere to the cleaning screens of combine harvesters, resulting in significant cleaning losses. Previous studies have shown that bionic nonsmooth surface cleaning screens restrain the adhesion of rape materials, but the underlying mechanisms remain unclear. Objective. The reciprocating friction between rape stalk and bionic nonsmooth metal surface was examined. Methods. The short-time Fourier transform method was used to discriminate the stable phase of friction signals and the stick-lag distance was defined to analyze the stable reciprocating friction in a phase diagram. Results. The reciprocating friction between rape stalk and metal surface is a typical stick-slip friction, and the bionic nonsmooth metal surfaces with concave or convex units reduced friction force with increasing reciprocating frequency. The results also showed that the stick-lag distance of convex surface increased with reciprocating frequency, which indicated that convex surface reduces friction force more efficiently. Conclusions. We suggest that bionic nonsmooth surface cleaning screens, especially with convex units, restrain the adhesion of rape materials more efficiently compared to the smooth surface cleaning screens.

  1. Experimental Study of Reciprocating Friction between Rape Stalk and Bionic Nonsmooth Surface Units.

    Science.gov (United States)

    Ma, Zheng; Li, Yaoming; Xu, Lizhang

    2015-01-01

    Background. China is the largest producer of rape oilseed in the world; however, the mechanization level of rape harvest is relatively low, because rape materials easily adhere to the cleaning screens of combine harvesters, resulting in significant cleaning losses. Previous studies have shown that bionic nonsmooth surface cleaning screens restrain the adhesion of rape materials, but the underlying mechanisms remain unclear. Objective. The reciprocating friction between rape stalk and bionic nonsmooth metal surface was examined. Methods. The short-time Fourier transform method was used to discriminate the stable phase of friction signals and the stick-lag distance was defined to analyze the stable reciprocating friction in a phase diagram. Results. The reciprocating friction between rape stalk and metal surface is a typical stick-slip friction, and the bionic nonsmooth metal surfaces with concave or convex units reduced friction force with increasing reciprocating frequency. The results also showed that the stick-lag distance of convex surface increased with reciprocating frequency, which indicated that convex surface reduces friction force more efficiently. Conclusions. We suggest that bionic nonsmooth surface cleaning screens, especially with convex units, restrain the adhesion of rape materials more efficiently compared to the smooth surface cleaning screens.

  2. A new bionic MAV's flapping motion based on fruit fly hovering at low Reynolds number

    Institute of Scientific and Technical Information of China (English)

    Peng Bai; Erjie Cui; Feng Li; Weijiang Zhou; Bingyan Chen

    2007-01-01

    On the basis of the studies on the high unsteadyaerody namic mechanisms of the fruit fly hovering the aerodynamic advantages and disadvantages of the fruit fly flapping motion were analyzed. A new bionic flapping motion was proposed to weaken the disadvantages and maintain the advantages, it may be used in the designing and manufacturing of the micro air vehicles (MAV's). The translation of the new bionic flapping motion is the same as that of fruit fly flapping motion. However, the rotation of the new bionic flapping motion is different. It is not a pitching-up rotation as the fruit fly flapping motion, but a pitching-down rotation at the beginning and the end of a stroke. The numerical method of 3rd-order Roe scheme developed by Rogers was used to study these questions. The correctness of the numerical method and the computational program was justified by comparing the present CFD results of the fruit fly flapping motion in three modes, i.e., the advanced mode, the symmetrical mode and the delayed mode, with Dickinson's experimental results. They agreed with each other very well.Subsequently, the aerodynamic characteristics of the new bionic flapping motion in three modes were also numerically simulated, and were compared with those of the fruit fly flapping. The conclusions could be drawn that the high unsteady lift mechanism of the fruit fly hovering is also effectively utilized by this new bionic flapping. Compared with the fruit fly flapping, the unsteady drag of the new flapping decreases very much and the ratio of lift to drag increases greatly. And the great discrepancies among the mean lifts of three flapping modes of the fruit fly hovering are effectively smoothed inthe new flapping. On the other hand, this new bionic flapping motion should be realized more easily. Finally, it must bepointed out that the above conclusions were just drawn forthe hovering flapping motion. And the aerodynamic characteristics of the new bionic flapping motion in forward

  3. 仿生传感器技术发展探究%Research on Development of Bionic Sensing Technology

    Institute of Scientific and Technical Information of China (English)

    韦炜

    2012-01-01

    总体介绍了仿生传感技术的发展状况.从仿生传感器的产生和含义入手,着重论述了其类型和基本原理,进一步阐明了仿生传感器的发展趋势.对仿生传感技术的进一步研究具有启示作用.%General introduced the development of bionic sensor technology. Starting from production and meaning of bionic sensor, focuses on its types and basic principles, and further to elucidate the trend of bionic sensor. It has enlightenment function for further study of bionic sensing technology.

  4. 刀具仿生技术的研究进展%Development of cutting tool bionic technology

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

      仿生学可以为提高刀具的耐磨性和工作效率提供良好的借鉴思路。从形态仿生、构形仿生和材料仿生3个方面总结仿生技术在各类刀具设计中的应用,介绍各种仿生刀具的生物体原型、仿生特征以及仿生刀具的应用领域和效果。刀具的仿生设计涉及刀具的几何形状、涂层以及刀具的表面结构,刀具的应用领域包括机械加工、地质与空间勘探以及与人们生活相关的轻工机械等领域。讨论仿生刀具的特征,分析存在的问题,并展望了刀具仿生技术的研究方向。%Bionics can provide better design thoughts to improve wear resistance and cutting efficiency of cutting tool. The applications of bionic technology in the design of various types of cutting tool are summarized from three aspects of structure, form and material. The biological prototype,bionic characteristics,application area and effect of bionic cutting tools are introduced. The bionic designs of cutting tools involve tool geometry,coating and surface structure. The application fields of bionic tools concern with machining,geology,space exploration and light industry machinery associated with daily life. Finally, the characteristics of bionic tools are discussed. The existing problems and development trend of cutting tool bionic technology are also given.

  5. Autonomous Navigation for Unmanned Aerial Vehicles Based on Chaotic Bionics Theory

    Institute of Scientific and Technical Information of China (English)

    Xiao-lei Yu; Yong-rong Sun; Jian-ye Liu; Bing-wen Chen

    2009-01-01

    In this paper a new reactive mechanism based on perception-action bionics for multi-sensory integration applied to Un-manned Aerial Vehicles (UAVs) navigation is proposed. The strategy is inspired by the olfactory bulb neural activity observed in rabbits subject to external stimuli. The new UAV navigation technique exploits the use of a muitiscroil chaotic system which i sable to be controlled in real-time towards less complex orbits, like periodic orbits or equilibrium points, considered as perceptive orbits. These are subject to real-time modifications on the basis of environment changes acquired through a Synthetic Aperture Radar (SAR) sensory system. The mathematical details of the approach are given including simulation results in a virtual en-vironment. The results demonstrate the capability of autonomous navigation for UAV based on chaotic bionics theory in com-plex spatial environments.

  6. Knee Joint Optimization Design of Intelligent Bionic Leg Based on Genetic Algorithm

    Directory of Open Access Journals (Sweden)

    Hualong Xie

    2014-09-01

    Full Text Available Intelligent bionic leg (IBL is an advanced prosthesis which can maximum functionally simulate and approach the motion trajectory of human leg. Knee joint is the most important bone of human leg and its bionic design has great significance to prosthesis performance. The structural components of IBL are introduced and virtual prototype is given. The advantages of 4-bar knee joint are analyzed and are adopted in IBL design. The kinematics model of 4-bar knee joint is established. The objective function, constraint condition, parameters selection and setting of genetic algorithm are discussed in detail. Based on genetic algorithm, the optimization design of IBL knee joint is done. The optimization results indicate that the 4-bar mechanism can achieve better anthropomorphic characteristics of human knee joint.

  7. Effects of setting angle on performance of fish-bionic wind wheel

    Science.gov (United States)

    Li, G. S.; Yang, Z. X.; Song, L.; Chen, Q.; Li, Y. B.; Chen, W.

    2016-08-01

    With the energy crisis and the increasing environmental pollutionmore and more efforts have been made about wind power development. In this paper, a new type of vertical axis named the fish-bionic wind wheel was proposed, and the outline of wind wheel was constructed by curve of Fourier fitting and polynomial equations. This paper attempted to research the relationship between the setting angle and the wind turbine characteristics by computational fluid dynamics (CFD) simulation. The results showed that the setting angle of the fish-bionic wind wheel has some significant effects on the efficiency of the wind turbine, Within the range of wind speed from 13m/s to 15m/s, wind wheel achieves the maximum efficiency when the setting angle is at 37 degree. The conclusion will work as a guideline for the improvement of wind turbine design.

  8. A bionic approach to mathematical modeling the fold geometry of deployable reflector antennas on satellites

    Science.gov (United States)

    Feng, C. M.; Liu, T. S.

    2014-10-01

    Inspired from biology, this study presents a method for designing the fold geometry of deployable reflectors. Since the space available inside rockets for transporting satellites with reflector antennas is typically cylindrical in shape, and its cross-sectional area is considerably smaller than the reflector antenna after deployment, the cross-sectional area of the folded reflector must be smaller than the available rocket interior space. Membrane reflectors in aerospace are a type of lightweight structure that can be packaged compactly. To design membrane reflectors from the perspective of deployment processes, bionic applications from morphological changes of plants are investigated. Creating biologically inspired reflectors, this paper deals with fold geometry of reflectors, which imitate flower buds. This study uses mathematical formulation to describe geometric profiles of flower buds. Based on the formulation, new designs for deployable membrane reflectors derived from bionics are proposed. Adjusting parameters in the formulation of these designs leads to decreases in reflector area before deployment.

  9. Numerical simulations of self-propelled swimming of 3D bionic fish school

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Numerical simulations of self-propelled swimming of a three dimensional bionic fish and fish school in a viscous fluid are carried out. This is done with the assistance of a parallel software package produced for 3D moving boundary problems. This computational fluid dynamics package combines the adaptive multi-grid finite volume method, the immersed boundary method and VOF (volume of fluid) method. By using the package results of the self-propelled swimming of a 3D bionic fish and fish school in a vis- cous fluid are obtained. With comparison to the existing experimental measurements of living fishes, the predicted structure of vortical wakes is in good agreement with the measurements.

  10. Microelectrode Recording of Tissue Neural Oscillations for a Bionic Olfactory Biosensor

    Institute of Scientific and Technical Information of China (English)

    Qingjun Liu; Fenni Zhang; Ning Hu; Hua Wang; Kuen Jimmy Hsia; Ping Wang

    2012-01-01

    In olfactory research,neural oscillations exhibit excellent temporal regularity,which are functional and necessary at the physiological and cognitive levels.In this paper,we employed a bionic tissue biosensor which treats intact epithelium as sensing element to record the olfactory oscillations extracellularly.After being stimulated by odorant of butanedione,the olfactory receptor neurons generated different kinds of oscillations,which can be described as pulse firing oscillation,transient firing oscillation,superposed firing oscillation,and sustained firing oscillation,according to their temporal appearances respectively.With a time-frequency analysis of sonogram,the oscillations also demonstrated different frequency properties,such as δ,θ,α,β and γ oscillations.The results suggest that the bionic biosensor cooperated with sonogram analysis can well improve the investigation of olfactory oscillations,and provide a novel model for artificial olfaction sensor design.

  11. Principles of electromagnetic protection bionics and research of fault self-recovery mechanism

    Institute of Scientific and Technical Information of China (English)

    Yuan Liang; Man Menghua; Chang Xiaolong

    2014-01-01

    As we have borrowed the wisdom from biological neural network, the characteristic of interference- proof in information transferring process has been carefully studied. Our study includes the response of electrical-interference-proof circuit in electromagnetic environment, by means of bionics redesign. In this way, new principles, new technics and new ways are adopted to solve the unavoidable situations in traditional electro- magnet protection design. Based on the Boolean model, the complex bionic topological networks were firstly built and the charactoristics of degeneracy were analyzed, then the bidirectional actions between degeneracy in networks and the robustness of functions were proved in order to fill up the gap to deal with the need of interference-proof. Based on the creation of the neuron networks and the electrical synapses ' charac- teristic of plasticity, the impact of the distribution in the weight of synapse on the character of network self- recovery was studied afterwards so that the corresponding mechanism could be defined.

  12. Towards Extending Forward Kinematic Models on Hyper-Redundant Manipulator to Cooperative Bionic Arms

    Science.gov (United States)

    Singh, Inderjeet; Lakhal, Othman; Merzouki, Rochdi

    2017-01-01

    Forward Kinematics is a stepping stone towards finding an inverse solution and subsequently a dynamic model of a robot. Hence a study and comparison of various Forward Kinematic Models (FKMs) is necessary for robot design. This paper deals with comparison of three FKMs on the same hyper-redundant Compact Bionic Handling Assistant (CBHA) manipulator under same conditions. The aim of this study is to project on modeling cooperative bionic manipulators. Two of these methods are quantitative methods, Arc Geometry HTM (Homogeneous Transformation Matrix) Method and Dual Quaternion Method, while the other one is Hybrid Method which uses both quantitative as well as qualitative approach. The methods are compared theoretically and experimental results are discussed to add further insight to the comparison. HTM is the widely used and accepted technique, is taken as reference and trajectory deviation in other techniques are compared with respect to HTM. Which method allows obtaining an accurate kinematic behavior of the CBHA, controlled in the real-time.

  13. As Stainless as the Lotus--Fabricating Bionic Polymer Surface with a Self-cleaning Function

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ The artificial imitation of natural creatures has always been a forever dream in the fairy tales or scientific fictions. Thanks to the development of science and technology, this long-cherished dream has come true in some ways. Bionics, a branch of science concerned with applying the data and mechanisms of the functions of biological system to the solution of engineering problems, has become one of the frontier areas of science in the 21 st century, as what was shown in many reviews and books published in the late 20th century. In fact, human being got inspiration from the nature and created lots of bionic products in the past decades, e.g. the airplane and the radar.However, few examples are given in molecular-level or nano-scale artificial plant surface.

  14. The UC Softhand: Light Weight Adaptive Bionic Hand with a Compact Twisted String Actuation System

    Directory of Open Access Journals (Sweden)

    Mahmoud Tavakoli

    2015-12-01

    Full Text Available In this paper, we present the design and development of the UC-Softhand. The UC Softhand is a low cost, Bionic and adaptive hand that takes advantage of compliant joints. By optimization of the actuation strategy as well as the actuation mechanism, we could develop an anthropomorphic hand that embeds three actuators, transmission mechanisms, controllers and drivers in the palm of the hand, and weighs only 280 g, making it one of the lightest bionic hands that has been created so far. The key aspect of the UC Softhand is utilization of a novel compact twisted string actuation mechanism, that allows a considerable weight and cost reduction compared to its predecessor.

  15. Bionic ankle–foot prosthesis normalizes walking gait for persons with leg amputation

    OpenAIRE

    Herr, Hugh M.; Grabowski, Alena M.

    2011-01-01

    Over time, leg prostheses have improved in design, but have been incapable of actively adapting to different walking velocities in a manner comparable to a biological limb. People with a leg amputation using such commercially available passive-elastic prostheses require significantly more metabolic energy to walk at the same velocities, prefer to walk slower and have abnormal biomechanics compared with non-amputees. A bionic prosthesis has been developed that emulates the function of a biolog...

  16. A Multi-Level Control Architecture for the Bionic Handling Assistant

    OpenAIRE

    Rolf, Matthias; Neumann, Klaus; Queißer, Jeffrey; Reinhart, Felix; Nordmann, Arne; Steil, Jochen J.

    2015-01-01

    The Bionic Handling Assistant is one of the largest soft continuum robots and very special in be- ing a pneumatically operated platform that is able to bend, stretch, and grasp in all directions. It nevertheless shares many challenges with smaller continuum and other softs robots such as parallel actuation, complex movement dynamics, slow pneumatic actuation, non-stationary behavior, and a lack of analytic models. To master the control of this challenging robot, we argue for a tig...

  17. Dynamic model and performance analysis of landing buffer for bionic locust mechanism

    Institute of Scientific and Technical Information of China (English)

    Dian-Sheng Chen; Zi-Qiang Zhang; Ke-Wei Chen

    2016-01-01

    The landing buffer is an important problem in the research on bionic locust jumping robots, and the differ-ent modes of landing and buffering can affect the dynamic performance of the buffering process significantly. Based on an experimental observation, the different modes of landing and buffering are determined, which include the different numbers of landing legs and different motion modes of legs in the buffering process. Then a bionic locust mechanism is established, and the springs are used to replace the leg muscles to achieve a buffering effect. To reveal the dynamic performance in the buffering process of the bionic locust mechanism, a dynamic model is established with different modes of landing and buffering. In particular, to analyze the buffering process conveniently, an equivalent vibration dynamic model of the bionic locust mechanism is proposed. Given the support forces of the ground to the leg links, which can be obtained from the dynamic model, the spring forces of the legs and the impact resistance of each leg are the important parameters affecting buffering performance, and evaluation principles for buffering performance are proposed according to the aforementioned parameters. Based on the dynamic model and these evaluation principles, the buffer-ing performances are analyzed and compared in different modes of landing and buffering on a horizontal plane and an inclined plane. The results show that the mechanism with the ends of the legs sliding can obtain a better dynamic per-formance. This study offers primary theories for buffering dynamics and an evaluation of landing buffer performance, and it establishes a theoretical basis for studies and engineer-ing applications.

  18. Dynamic model and performance analysis of landing buffer for bionic locust mechanism

    Science.gov (United States)

    Chen, Dian-Sheng; Zhang, Zi-Qiang; Chen, Ke-Wei

    2016-06-01

    The landing buffer is an important problem in the research on bionic locust jumping robots, and the different modes of landing and buffering can affect the dynamic performance of the buffering process significantly. Based on an experimental observation, the different modes of landing and buffering are determined, which include the different numbers of landing legs and different motion modes of legs in the buffering process. Then a bionic locust mechanism is established, and the springs are used to replace the leg muscles to achieve a buffering effect. To reveal the dynamic performance in the buffering process of the bionic locust mechanism, a dynamic model is established with different modes of landing and buffering. In particular, to analyze the buffering process conveniently, an equivalent vibration dynamic model of the bionic locust mechanism is proposed. Given the support forces of the ground to the leg links, which can be obtained from the dynamic model, the spring forces of the legs and the impact resistance of each leg are the important parameters affecting buffering performance, and evaluation principles for buffering performance are proposed according to the aforementioned parameters. Based on the dynamic model and these evaluation principles, the buffering performances are analyzed and compared in different modes of landing and buffering on a horizontal plane and an inclined plane. The results show that the mechanism with the ends of the legs sliding can obtain a better dynamic performance. This study offers primary theories for buffering dynamics and an evaluation of landing buffer performance, and it establishes a theoretical basis for studies and engineering applications.

  19. The Mechanism of Drag Reduction around Bodies of Revolution Using Bionic Non-Smooth Surfaces

    Institute of Scientific and Technical Information of China (English)

    Li-mei Tian; Lu-quan Ren; Qing-ping Liu; Zhi-wu Han; Xiao Jiang

    2007-01-01

    Bionic non-smooth surfaces (BNSS) can reduce drag. Much attention has been paid to the mechanism of shear stress reduction by riblets. The mechanism of pressure force reduction by bionic non-smooth surfaces on bodies of revolution has not been, well investigated. In this work CFD simulation has revealed the mechanism of drag reduction by BNSS, which may work in three ways. First, BNSS on bodies of revolution may lower the surface velocity of the medium, which prevents the sudden speed up of air on the cross section. So the bottom pressure of the model would not be disturbed sharply, resulting in less energy loss and drag reduction. Second, the magnitude of vorticity induced by the bionic model becomes smaller because, due to the sculpturing, the growth of tiny air bubbles is avoided. Thus the large moment of inertia induced by large air bubble is reduced. The reduction of the vorticity could reduce the dissipation of the eddy. So the pressure force could also be reduced. Third, the thickness of the momentum layer on the model becomes less which, according to the relationship between the drag coefficient and the momentum thickness, reduces drag.

  20. 同步仿生机械臂设计%Design of Synchronous Bionic Arm

    Institute of Scientific and Technical Information of China (English)

    张昊; 王超亮; 田文龙; 李擎

    2015-01-01

    针对目前机械臂的应用存在操作复杂、设计繁琐等不足,设计一套由MCU、加速度计、直流舵机和臂环等构成的同步仿生机械臂.介绍系统总体设计,通过信号转换算法使采集信号转换为驱动舵机转动的 PWM 控制信号,采用程序消抖算法进行优化,并进行实验验证.结果表明:该仿生机械臂控制灵活,使用简单,成本低廉,可推广应用于仿人手臂运动作业、主从机械臂系统的研究领域.%Aiming at the shortcomings of complex operation and excessively detailed design, design a synchronous motion bionic arm which is composed by the MCU, accelerometers, DC servos and arm rings. Introduce the system overall design, through signal change algorithm, change choosing signal into PWM control signal for driving actuator running. Carry out optimization by using program chattering elimination algorithm. Then, carry out test verification. The result shows that the bionic arm control is nimble, easy to use with low cost. It can be used fields such as bionic arm operation, master-slave manipulator system and so on.

  1. Fabrication of a Bionic Needle with both Super-Hydrophobic and Antibacterial Properties

    Institute of Scientific and Technical Information of China (English)

    Xin Qi; Wei Song; Zhu Mao; Wenran Gao; Qian Cong

    2013-01-01

    Many biological surfaces possess unusual micro-nano hierarchical structures that could influence their wettability,which provide new methods for the construction of novel materials.In this work,silver nanoparticles were successfully coated on the surface of stainless steel needle by a simple electroless replacement reaction process between the AgNO3 solution and the activated stainless steel needle.After the replacement reaction,porous micro/nanostrctures were formed on the surface of the stainless steel needle.By modifying long chains ofthiol molecules,the stainless steel needle exhibited good super-hydrophobic property with a contact angle greater than 150°.Moreover,the silver coated stainless steel needle (bionic needle) showed strong antibacterial activity against the gram-negative bacterium Escherichia coli (E.coli).By calculating the area of the inhibition zone against E.coli formed on agar medium,the antibacterial activity of the bionic needle with the contact angle of 152° is much better than that with the contact angle of 138°.The as-prepared bionic needle with both super-hydrophobic and antibacterial properties has the potential to be applied in modem medical devices.

  2. Bionic Optimisation of the Earthquake Resistance of High Buildings by Tuned Mass Dampers

    Institute of Scientific and Technical Information of China (English)

    Rolf Steinbuch

    2011-01-01

    The optimisation of earthquake resistance of high buildings by multi-tuned mass dampers was investigated using bionic algorithms. In bionic or evolutionary optimisation studies the properties of parents are crossed and mutated to produce a new generation with slightly different properties. The kids which best satisfy the object of the study, become the parents of the next generation. After a series of generations essential improvements of the object may be observed. Tuned mass dampers are widely used to reduce the impact of dynamic excitations on structures. A single mass system and multi-mass oscillators help to explain the mechanics of the dampers. To apply the bionic optimisation strategy to high buildings with passive tuned mass dampers subject to seismic loading a special beam element has been developed. In addition to the 6 degrees of freedom of a conventional beam element, it has 2 degrees of freedom for the displacements of the dampers. It allows for fast studies of many variants. As central result, efficient designs for damping systems along the height of an edifice are found. The impact on the structure may be reduced essentially by the use of such dampers designed to interact in an optimal way.

  3. Design and Analysis of Bionic Cutting Blades Using Finite Element Method.

    Science.gov (United States)

    Li, Mo; Yang, Yuwang; Guo, Li; Chen, Donghui; Sun, Hongliang; Tong, Jin

    2015-01-01

    Praying mantis is one of the most efficient predators in insect world, which has a pair of powerful tools, two sharp and strong forelegs. Its femur and tibia are both armed with a double row of strong spines along their posterior edges which can firmly grasp the prey, when the femur and tibia fold on each other in capturing. These spines are so sharp that they can easily and quickly cut into the prey. The geometrical characteristic of the praying mantis's foreleg, especially its tibia, has important reference value for the design of agricultural soil-cutting tools. Learning from the profile and arrangement of these spines, cutting blades with tooth profile were designed in this work. Two different sizes of tooth structure and arrangement were utilized in the design on the cutting edge. A conventional smooth-edge blade was used to compare with the bionic serrate-edge blades. To compare the working efficiency of conventional blade and bionic blades, 3D finite element simulation analysis and experimental measurement were operated in present work. Both the simulation and experimental results indicated that the bionic serrate-edge blades showed better performance in cutting efficiency.

  4. Design and Analysis of Bionic Cutting Blades Using Finite Element Method

    Directory of Open Access Journals (Sweden)

    Mo Li

    2015-01-01

    Full Text Available Praying mantis is one of the most efficient predators in insect world, which has a pair of powerful tools, two sharp and strong forelegs. Its femur and tibia are both armed with a double row of strong spines along their posterior edges which can firmly grasp the prey, when the femur and tibia fold on each other in capturing. These spines are so sharp that they can easily and quickly cut into the prey. The geometrical characteristic of the praying mantis’s foreleg, especially its tibia, has important reference value for the design of agricultural soil-cutting tools. Learning from the profile and arrangement of these spines, cutting blades with tooth profile were designed in this work. Two different sizes of tooth structure and arrangement were utilized in the design on the cutting edge. A conventional smooth-edge blade was used to compare with the bionic serrate-edge blades. To compare the working efficiency of conventional blade and bionic blades, 3D finite element simulation analysis and experimental measurement were operated in present work. Both the simulation and experimental results indicated that the bionic serrate-edge blades showed better performance in cutting efficiency.

  5. Bionic cardiology: exploration into a wealth of controllable body parts in the cardiovascular system.

    Science.gov (United States)

    Sugimachi, Masaru; Sunagawa, Kenji

    2009-01-01

    Bionic cardiology is the medical science of exploring electronic control of the body, usually via the neural system. Mimicking or modifying biological regulation is a strategy used to combat diseases. Control of ventricular rate during atrial fibrillation by selective vagal stimulation, suppression of ischemia-related ventricular fibrillation by vagal stimulation, and reproduction of neurally commanded heart rate are some examples of bionic treatment for arrhythmia. Implantable radio-frequency-coupled on-demand carotid sinus stimulators succeeded in interrupting or preventing anginal attacks but were replaced later by coronary revascularization. Similar but fixed-intensity carotid sinus stimulators were used for hypertension but were also replaced by drugs. Recently, however, a self-powered implantable device has been reappraised for the treatment of drug-resistant hypertension. Closed-loop spinal cord stimulation has successfully treated severe orthostatic hypotension in a limited number of patients. Vagal nerve stimulation is effective in treating heart failure in animals, and a small-size clinical trial has just started. Simultaneous corrections of multiple hemodynamic abnormalities in an acute decompensated state are accomplished simply by quantifying fundamental cardiovascular parameters and controlling these parameters. Bionic cardiology will continue to promote the development of more sophisticated device-based therapies for otherwise untreatable diseases and will inspire more intricate applications in the twenty-first century.

  6. Design Principles of the Non-smooth Surface of Bionic Plow Moldboard

    Institute of Scientific and Technical Information of China (English)

    Luquan Ren; Shiqiao Deng; Jingchun Wang; Zhiwu Han

    2004-01-01

    The diverse non-smooth body surfaces to reduce soil adhesion are the evolutional results for the soil animals to fit the adhesive and wet environment and can be used as a biological basis for the design of bionic plow moldboard. The model surfaces for bionic simulation should be taken from soil animal digging organs, on which the soil motion is similar to what is on the surface of moldboard. By analyzing the distribution of non-smooth units on the body surface of the ground beetle jaw and the soil moving stresses, the design principles of the bionic moldboard for the local and the whole moldboard were presented respectively. As well, the effect of soil moving speed on reducing adhesion, the dimensions relationship between soil particles and non-smooth convexes, the relationship between the enveloping surface of non-smooth convexes and the initial smooth surface of the plow body, and the convex types of the sphere coronal and the pangolin scales, etc. were discussed.

  7. High-sensitive and high-efficient biochemical analysis method using a bionic electronic eye in combination with a smartphone-based colorimetric reader system.

    Science.gov (United States)

    Kaiqi Su; Quchao Zou; Ning Hu; Ping Wang

    2015-01-01

    Bionic electronic eye (Bionic e-Eye), a developed smartphone-based colorimetric reader system, consists of smartphone or pad (iPhone 4s or iPad 3) as detection instrument and portable accessory as illumination provider, integrating with a wide-angle lens, a piece of lowest-power electro luminescent and a custom-made dark hood. A 96-well microtiter plate (MTP) was positioned on the electro luminescent and Bionic e-Eye captures the detection images by the back camera of smartphone. Being similar to human visual system, the hue, saturation and value (HSV, also called hex cone model) color model was employed in image processing algorithm of Bionic e-Eye. Optimized system dimension was determined by the system steadiness experiment of different photograph distances. Moreover, the commercially available BCA protein assay and CCK8 cell number assay were carried out to evaluate this Bionic e-Eye. Analytical performance of Bionic e-Eye had the better precision, higher sensitivity than microtiter plate reader (MTPR) and previous smartphone-based colorimetric reader for both two assays. Also, Bionic e-Eye using optical image detection had simultaneous and synchronous working mode, while MPTR using machine moving detection had asynchronous working mode in high throughput detection. Therefore, Bionic e-Eye will be an ideal point-of-care (POC) colorimetric detection device in the field of clinical application, industrial quality control, environment monitoring, and food assessment.

  8. 浅谈仿生设计在建筑设计中的运用%On the bionic design in architectural design in the use of

    Institute of Scientific and Technical Information of China (English)

    李明

    2013-01-01

    本文介绍了仿生设计的概念、特点,分析了建筑仿生设计的表现与应用阐述了建筑仿生设计的主要任务。以仿生设计理念为指导的建筑造型的设计。展望仿生学在建筑设计中运用的发展前景。%This paper introduces the concept of bionic design, features, analyzes the performance of architectural design and application of bionic expounded the main task of building bionic design. Bionic design concept as a guide to the architectural style of the design. Looking bionics use in architectural design development prospects.

  9. Dynamic bending of bionic flexible body driven by pneumatic artificial muscles(PAMs) for spinning gait of quadruped robot

    Science.gov (United States)

    Lei, Jingtao; Yu, Huangying; Wang, Tianmiao

    2016-01-01

    The body of quadruped robot is generally developed with the rigid structure. The mobility of quadruped robot depends on the mechanical properties of the body mechanism. It is difficult for quadruped robot with rigid structure to achieve better mobility walking or running in the unstructured environment. A kind of bionic flexible body mechanism for quadruped robot is proposed, which is composed of one bionic spine and four pneumatic artificial muscles(PAMs). This kind of body imitates the four-legged creatures' kinematical structure and physical properties, which has the characteristic of changeable stiffness, lightweight, flexible and better bionics. The kinematics of body bending is derived, and the coordinated movement between the flexible body and legs is analyzed. The relationship between the body bending angle and the PAM length is obtained. The dynamics of the body bending is derived by the floating coordinate method and Lagrangian method, and the driving force of PAM is determined. The experiment of body bending is conducted, and the dynamic bending characteristic of bionic flexible body is evaluated. Experimental results show that the bending angle of the bionic flexible body can reach 18°. An innovation body mechanism for quadruped robot is proposed, which has the characteristic of flexibility and achieve bending by changing gas pressure of PAMs. The coordinated movement of the body and legs can achieve spinning gait in order to improve the mobility of quadruped robot.

  10. Numerical Simulation of the Effect of Bionic Serrated Structures on the Aerodynamic Noise of a Circular Cylinder

    Institute of Scientific and Technical Information of China (English)

    Lei Shi; Chengchun Zhang; Jing Wang; Luquan Ren

    2012-01-01

    Flow control can effectively reduce the aerodynamic noise radiated from a circular cylinder.As one of the flow control methods,a bionic method,inspired by the serrations at the leading edge of owls' wing,was proposed in this paper.The effects of bionic serrated structures arranged on the upper and lower sides of a cylinder on the aerodynamic and aeroacoustic performance of the cylinder were numerically investigated.At a free stream speed of 24.5 m·s-1,corresponding to Reynolds number of 1.58 × 104,the simulation results indicate that the bionic serrated structures can decrease the frequency of the vortex shedding and control the fluctuating aerodynamic force acting on the cylinder,thus reduce the aerodynamic noise.A qualitative-view of the vorticity in the wake of the cylinder suggest that the serrated structures reduce aerodynamic sound by suppressing the unsteady motion of vortices.

  11. Effect of the microhardness difference between base metal and bionic coupling unit on wear resistance of gray cast iron

    Science.gov (United States)

    Pang, Zuobo; Zhou, Hong; Chang, Fang; Zhang, Peng; Cong, Dalong; Meng, Chao; Wang, Chuanwei; Ren, Luquan

    2015-12-01

    In order to improve the wear resistance of gray cast iron guide rail, the samples with different microhardness difference between bionic coupling units and base metal were manufactured by laser surface remelting. Wear behavior of gray cast iron with bionic coupling units has been studied under dry sliding condition at room temperature using a homemade liner reciprocating wear testing machine. The wear resistance was evaluated by means of weight loss measurement and wear morphology. The results indicated that when the microhardness difference is 561 HV0.2, the wear resistance of sample is the best.

  12. 试论仿生设计在陶瓷产品设计中的应用%The Application of Bionic Design in Ceramic Product Design

    Institute of Scientific and Technical Information of China (English)

    张悦; 吴小华; 任远

    2013-01-01

    仿生设计是一种新的设计思维和方法,文章以理论结合实例的研究方法,从仿生设计的视角研究陶瓷产品的设计开发问题,主要是从肌理仿生、整体形态仿生和局部形态仿生等方面谈仿生设计在陶瓷产品设计中的具体应用问题.仿生设计介入陶瓷产品设计具有启迪陶瓷产品设计师思维,彰显陶瓷产品个性化和趣味性的价值.%The bionic design is one kind of new design thinking and methods,and the article to the study of the theory with examples from bionic design perspective of ceramic product design and development issues,mainly in terms of texture bionic overall shape bionic and partial shape bionic discusses bionic design specific applications in the design of ceramic products.Bionic design intervention ceramic product design inspiration ceramic product designers thinking,highlighting the value of ceramic products personalized and interesting.

  13. 仿生纺品与服装%Bionic Textiles and Garment

    Institute of Scientific and Technical Information of China (English)

    陈丽华

    2011-01-01

    对目前国内外研究开发的仿生纺织品与服装进行了综述,包括仿生功能纺织品与服装,智能仿生纺织品与服装.详细介绍了各类仿生纺织品与服装的仿生原理、主要产品及其应用.%The study progress of bionic textiles and garment in recent years were reviewed. The principle of functional textiles and intelligent textiles were discussed in detail. The relevant products and its appalication were also introduced.

  14. Materials design considerations involved in the fabrication of implantable bionics by metallization of ceramic substrates.

    Science.gov (United States)

    Patel, Sunil; Guenther, Thomas; Dodds, Christopher W D; Kolke, Sergej; Privat, Karen L; Matteucci, Paul B; Suaning, Gregg J

    2013-01-01

    The Pt metallization of co-fired Al2O3/SiO2 substrates containing Pt feedthroughs was shown to be a suitable means to construct implantable bionics. The use of forge welding to join an electrode to such a metallized feedthrough was demonstrated and subsequently evaluated through the use of metallography and electron microscopy. Metallurgical phenomena involved in forge welding relevant to the fabrication of all types of biomedical implants are discussed within this paper. The affect of thermal profiles used in brazing or welding to build implantable devices from metal components is analysed and the case for considered selection of alloys in implant design is put forward.

  15. Industry 5.0—The Relevance and Implications of Bionics and Synthetic Biology

    Directory of Open Access Journals (Sweden)

    Peter Sachsenmeier

    2016-06-01

    Full Text Available Bionics (the imitation or abstraction of the “inventions of nature and, to an even greater extent, synthetic biology, will be as relevant to engineering development and industry as the silicon chip was over the last 50 years. Chemical industries already use so-called “white biotechnology” for new processes, new raw materials, and more sustainable use of resources. Synthetic biology is also used for the development of second-generation biofuels and for harvesting the sun's energy with the help of tailor-made microorganisms or biometrically designed catalysts. The market potential for bionics in medicine, engineering processes, and DNA storage is huge. “Moonshot” projects are already aggressively focusing on diseases and new materials, and a US-led competition is currently underway with the aim of creating a thousand new molecules. This article describes a timeline that starts with current projects and then moves on to code engineering projects and their implications, artificial DNA, signaling molecules, and biological circuitry. Beyond these projects, one of the next frontiers in bionics is the design of synthetic metabolisms that include artificial food chains and foods, and the bioengineering of raw materials; all of which will lead to new insights into biological principles. Bioengineering will be an innovation motor just as digitalization is today. This article discusses pertinent examples of bioengineering, particularly the use of alternative carbon-based biofuels and the techniques and perils of cell modification. Big data, analytics, and massive storage are important factors in this next frontier. Although synthetic biology will be as pervasive and transformative in the next 50 years as digitization and the Internet are today, its applications and impacts are still in nascent stages. This article provides a general taxonomy in which the development of bioengineering is classified in five stages (DNA analysis, bio

  16. Industry 5.0—The Relevance and Implications of Bionics and Synthetic Biology

    OpenAIRE

    Peter Sachsenmeier

    2016-01-01

    Bionics (the imitation or abstraction of the “inventions of nature) and, to an even greater extent, synthetic biology, will be as relevant to engineering development and industry as the silicon chip was over the last 50 years. Chemical industries already use so-called “white biotechnology” for new processes, new raw materials, and more sustainable use of resources. Synthetic biology is also used for the development of second-generation biofuels and for harvesting the sun's energy with the hel...

  17. Real-time processing of EMG signals for bionic arm purposes

    Science.gov (United States)

    Olid Dominguez, Ferran; Wawrzyniak, Zbigniew M.

    2016-09-01

    This paper is connected with the problem of prostheses, that have always been a necessity for the human being. Bio-physiological signals from muscles, electromyographic signals have been collected, analyzed and processed in order to implement a real-time algorithm which is capable of differentiation of two different states of a bionic hand: open and closed. An algorithm for real-time electromyographic signal processing with almost no false positives is presented and it is explained that in bio-physiological experiments proper signal processing is of great importance.

  18. Tangent Resistance of Soil on Moldboard and the Mechanism of Resistance Reduction of Bionic Moldboard

    Institute of Scientific and Technical Information of China (English)

    Deng Shi-qiao; Ren Lu-quan; Liu Yan; Han Zhi-wu

    2005-01-01

    The tangent resistance on the interface of the soil-moldboard is an important component of the resistance to moving soil . We developed simplified mechanical models to analyze this resistance. We found that it is composed of two components, the frictional and adhesive resistances. These two components originate from the soil pore, which induced a capillary suction effect, and the soil-moldboard contact area produced tangent adhesive resistance. These two components varied differently with soil moisture. Thus we predicted that resistance reduction against soil exerted on the non-smooth bionic moldboard is mainly due to the elimination of capillary suction and the reduction of physical-chemical adsorption of soil.

  19. A simple and accurate numerical network flow model for bionic micro heat exchangers

    Energy Technology Data Exchange (ETDEWEB)

    Pieper, M.; Klein, P. [Fraunhofer Institute (ITWM), Kaiserslautern (Germany)

    2011-05-15

    Heat exchangers are often associated with drawbacks like a large pressure drop or a non-uniform flow distribution. Recent research shows that bionic structures can provide possible improvements. We considered a set of such structures that were designed with M. Hermann's FracTherm {sup registered} algorithm. In order to optimize and compare them with conventional heat exchangers, we developed a numerical method to determine their performance. We simulated the flow in the heat exchanger applying a network model and coupled these results with a finite volume method to determine the heat distribution in the heat exchanger. (orig.)

  20. Numerical simulation of effect of bionic V-riblet non-smooth surface on tire anti-hydroplaning

    Institute of Scientific and Technical Information of China (English)

    周海超; 王国林; 杨建; 薛开鑫

    2015-01-01

    Inspired by the idea that bionic non-smooth surfaces (BNSS) can reduce fluid adhesion and resistance, and the effect of bionic V-riblet non-smooth structure arranged in tire tread pattern grooves surface on anti-hydroplaning performance was investigated by using computational fluid dynamics (CFD). The physical model of the object (model of V-riblet surface distribution, hydroplaning model) and SSTk−ω turbulence model were established for numerical analysis of tire hydroplaning. With the help of a orthogonal table L16(45), the parameters of V-riblet structure design compared to the smooth structure were analyzed, and obtained the priority level of the experimental factors as well as the best combination within the scope of the experiment. The simulation results show that V-riblet structure can reduce water flow resistance by disturbing the eddy movement in boundary layers. Then, the preferred type of V-riblet non-smooth structure was arranged on the bottom of tire grooves for hydroplaning performance analysis. The results show that bionic V-riblet non-smooth structure can effectively increase hydroplaning velocity and improve tire anti-hydroplaning performance. Bionic design of tire tread pattern grooves is a good way to promote anti-hydroplaning performance without increasing additional groove space, so that tire grip performance and roll noise are avoided due to grooves space enlargement.

  1. An Experimental Study on a Microclimatic Layer of a Bionic Fa(c)ade Inspired by Vertical Greenery

    Institute of Scientific and Technical Information of China (English)

    Toma(z) (S)uklje; Sa(s)o Medved; Ciril Arkar

    2013-01-01

    A microclimatic layer of the green fa(c)ade is proven to have specific temperature and flow conditions on the building envelope.Lower temperatures and wind velocities,and higher relative humidity in the microclimatic layer are the characteristics of vertical greenery systems,which cause lower energy consumption for the cooling and heating of buildings.Despite innovative architectural solutions,there are some drawbacks to applying vertical greenery on building envelopes.In this study,a bionic fa(c)ade that mimics the positive effects and eliminates the disadvantages of green fa(c)ades is presented.The bionic fa(c)ade consists of bionic leaves,which are made of photovoltaic cells and evaporative matrices.A real scale experiment was carried out in the summer to evaluate the potential of the cooling efficiency of the microclimatic layer and a new photovoltaic cooling technique.The results show a good agreement of the thermal performance between the bionic and the green fa(c)ade and up to 20.8 K lower surface temperatures of photovoltaic cells,which increase the daily electricity yield by 6.6%.

  2. A Novel System for Moving Object Detection Using Bionic Compound Eyes

    Institute of Scientific and Technical Information of China (English)

    Huabo Sun; Haimeng Zhao; Peter Mooney; Hongying Zhao; Daping Liu; Lei Yan

    2011-01-01

    Conventional moving target detection focuses on algorithms to improve detection efficiency. These algorithms pay less attention to the image acquisition means, and usually solve specific problems. This often results in poor flexibility and reusability. Insect compound eyes offer unique advantages for moving target detection and these advantages have attracted the attention of many researchers in recent years. In this paper we proposed a new system for moving target detection. We used the detection mechanism of insect compound eyes for the simulation of the characteristics of structure, control, and function. We discussed the design scheme of the system, the development of the bionic control circuit, and introduced the proposed mathematical model of bionic compound eyes for data acquisition and object detection. After this the integrated system was described and discussed. Our paper presents a novel approach for moving target detection. This approach effectively tackles some of the well-known problems in the field of view, resolution, and real-time processing problems in moving target detection.

  3. Progress in bionic information processing techniques for an electronic nose based on olfactory models

    Institute of Scientific and Technical Information of China (English)

    LI Guang; FU Jun; ZHANG Jia; ZHENG JunBao

    2009-01-01

    As a novel bionic analytical technique, an electronic nose, inspired by the mechanism of the biological olfactory system and integrated with modern sensing technology, electronic technology and pattern recognition technology, has been widely used in many areas. Moreover, recent basic research findings in biological olfaction combined with computational neuroscience promote its development both in methodology and application. In this review, the basic information processing principle of biological olfaction and artificial olfaction are summarized and compared, and four olfactory models and their applications to electronic noses are presented. Finally, a chaotic olfactory neural network is detailed and the utilization of several biologically oriented learning rules and its spatiotemporal dynamic prop-ties for electronic noses are discussed. The integration of various phenomena and their mechanisms for biological olfaction into an electronic nose context for information processing will not only make them more bionic, but also perform better than conventional methods. However, many problems still remain, which should be solved by further cooperation between theorists and engineers.

  4. Investigation into the efficiency of different bionic algorithm combinations for a COBRA meta-heuristic

    Science.gov (United States)

    Akhmedova, Sh; Semenkin, E.

    2017-02-01

    Previously, a meta-heuristic approach, called Co-Operation of Biology-Related Algorithms or COBRA, for solving real-parameter optimization problems was introduced and described. COBRA’s basic idea consists of a cooperative work of five well-known bionic algorithms such as Particle Swarm Optimization, the Wolf Pack Search, the Firefly Algorithm, the Cuckoo Search Algorithm and the Bat Algorithm, which were chosen due to the similarity of their schemes. The performance of this meta-heuristic was evaluated on a set of test functions and its workability was demonstrated. Thus it was established that the idea of the algorithms’ cooperative work is useful. However, it is unclear which bionic algorithms should be included in this cooperation and how many of them. Therefore, the five above-listed algorithms and additionally the Fish School Search algorithm were used for the development of five different modifications of COBRA by varying the number of component-algorithms. These modifications were tested on the same set of functions and the best of them was found. Ways of further improving the COBRA algorithm are then discussed.

  5. High orientation of long chain branched poly (lactic acid) with enhanced blood compatibility and bionic structure.

    Science.gov (United States)

    Li, Zhengqiu; Ye, Lin; Zhao, Xiaowen; Coates, Phil; Caton-Rose, Fin; Martyn, Michasel

    2016-05-01

    Highly oriented poly (lactic acid) (PLA) with bionic microgrooves was fabricated through solid hot drawing technology for further improving the mechanical properties and blood biocompatibility of PLA. In order to enhance the melt strength and thus obtain high orientation degree, long chain branched PLA was prepared at first through a two-step ring-opening reaction during processing. Linear viscoelasticity combined with branch-on-branch model was used to predict probable compositions and chain topologies of the products, and it was found that the molecular weight of PLA increased and topological structures with star like chain with three arms and tree-like chain with two generations formed during reactive processing, and consequently draw ratio as high as1200% can be achieved during the subsequent hot stretching. With the increase of draw ratio, the tensile strength and orientation degree of PLA increased dramatically. Long chain branching and orientation could significantly enhance the blood compatibility of PLA by prolonging clotting time and decreasing platelet activation. Microgrooves can be observed on the surface of the oriented PLA which were similar to the intimal layer of blood vessel, and such bionic structure resulted from the formation of the oriented shish kebab-like crystals along the draw direction.

  6. Mapping of bionic array electric field focusing in plasmid DNA-based gene electrotransfer.

    Science.gov (United States)

    Browne, C J; Pinyon, J L; Housley, D M; Crawford, E N; Lovell, N H; Klugmann, M; Housley, G D

    2016-04-01

    Molecular medicine through gene therapy is challenged to achieve targeted action. This is now possible utilizing bionic electrode arrays for focal delivery of naked (plasmid) DNA via gene electrotransfer. Here, we establish the properties of array-based electroporation affecting targeted gene delivery. An array with eight 300 μm platinum ring electrodes configured as a cochlear implant bionic interface was used to transduce HEK293 cell monolayers with a plasmid-DNA green fluorescent protein (GFP) reporter gene construct. Electroporation parameters were pulse intensity, number, duration, separation and electrode configuration. The latter determined the shape of the electric fields, which were mapped using a voltage probe. Electrode array-based electroporation was found to require ~100 × lower applied voltages for cell transduction than conventional electroporation. This was found to be due to compression of the field lines orthogonal to the array. A circular area of GFP-positive cells was created when the electrodes were ganged together as four adjacent anodes and four cathodes, whereas alternating electrode polarity created a linear area of GFP-positive cells. The refinement of gene delivery parameters was validated in vivo in the guinea pig cochlea. These findings have significant clinical ramifications, where spatiotemporal control of gene expression can be predicted by manipulation of the electric field via current steering at a cellular level.

  7. [Application of bionic technology to speciation analysis and bioavailability assessment of nickel in transgenic soybean].

    Science.gov (United States)

    Chen, Li-Hui; Li, Shun-Xing; Mou, Yang; Zheng, Feng-Ying; Li, Yan-Cai; Wang, Hui; Zheng, Na-Yan; Xie, He-Fang

    2013-11-01

    The safety of transgenic food has been paid the most attention to by the public and scientists. Trace metal bioavailability could provide information for safety assessment of transgenic food. The critical functional digestion and absorption in the gastrointestinal tract were simulated by bionic gastrointestinal digestion, metabolism of gut microbiota, and bionic biomembrane adsorption with liposome and then used for the pretreatment of transgenic and general soybeans. Ni speciation in the chyme was defined as affinity-liposome and water soluble Ni. Nickel bioavailability was assessed by the content of affinity-liposome Ni. Water soluble Ni was the main species of nickel complex in the chyme. Nickel bioavailability was 4.1% for transgenic soybean and 3.3% for general soybean, which could be enhanced by gastrointestinal digestion and metabolism of gut microbiota. After transgene, nickel bioavailability was increased 24% but the content of affinity-liposome Ni was 122.3 ng x g(-1) for transgenic soybean, just as 36% as that of general soybean.

  8. Bionic Mosaic Method of Panoramic Image Based on Compound Eye of Fly

    Institute of Scientific and Technical Information of China (English)

    Haipeng Chen; Xuanjing Shen; Xiaofei Li; Yushan Jin

    2011-01-01

    To satisfy the requirements of real-time and high quality mosaics,a bionic compound eye visual system was designed by simulating the visual mechanism of a fly compound eye.Several CCD cameras were used in this system to imitate the small eyes of a compound eye.Based on the optical analysis of this system,a direct panoramic image mosaic algorithm was proposed.Several sub-images were collected by the bionic compound eye visual system,and then the system obtained the overlapping proportions of these sub-images and cut the overlap sections of the neighboring images.Thus,a panoramic image with a large field of view was directly mosaicked,which expanded the field and guaranteed the high resolution.The experimental results show that the time consumed by the direct mosaic algorithm is only 2.2% of that by the traditional image mosaic algorithm while guaranteeing mosaic quality.Furthermore,the proposed method effectively solved the problem of misalignment of the mosaic image and eliminated mosaic cracks as a result of the illumination factor and other factors.This method has better real-time properties compared to other methods.

  9. Bionic Mechanism and Kinematics Analysis of Hopping Robot Inspired by Locust Jumping

    Institute of Scientific and Technical Information of China (English)

    Diansheng Chen; Junmao Yin; Kai Zhao; Wanjun Zheng; Tianmiao Wang

    2011-01-01

    A flexible-rigid hopping mechanism which is inspired by the locust jumping was proposed,and its kinematic characteristics were analyzed.A series of experiments were conducted to observe locust morphology and jumping process.According to classic mechanics,the jumping process analysis was conducted to build the relationship of the locust jumping parameters.The take-off phase was divided into four stages in detail.Based on the biological observation and kinematics analysis,a mechanical model was proposed to simulate locust jumping.The forces of the flexible-rigid hopping mechanism at each stage were analyzed.The kinematic analysis using pseudo-rigid-body model was described by D-H method.It is confirmed that the proposed bionic mechanism has the similar performance as the locust hind leg in hopping.Moreover,the jumping angle which decides the jumping process was discussed,and its relation with other parameters was established.A calculation case analysis corroborated the method.The results of this paper show that the proposed bionic mechanism which is inspired by the locust hind limb has an excellent kinematics performance,which can provide a foundation for design and motion planning of the hopping robot.

  10. Principles of electromagnetic protection bionics and research of fault self-recovery mechanism

    Institute of Scientific and Technical Information of China (English)

    Yuan Liang; Man Menghua; Chang Xiaolong

    2014-01-01

    As we have borrowed the wisdom from biological neural network,the characteristic of interference-proof in information transferring process has been carefully studied. Our study includes the response of electrical-interference-proof circuit in electromagnetic environment,by means of bionics redesign. In this way, new principles,new technics and new ways are adopted to solve the unavoidable situations in traditional electro-magnet protection design. Based on the Boolean model,the complex bionic topological networks were firstly built and the charactoristics of degeneracy were analyzed,then the bidirectional actions between degeneracy in networks and the robustness of functions were proved in order to fill up the gap to deal with the need of interference-proof. Based on the creation of the neuron networks and the electrical synapses ’ charac-teristic of plasticity ,the impact of the distribution in the weight of synapse on the character of network self-recovery was studied afterwards so that the corresponding mechanism could be defined.

  11. Numerical Analysis of Hydrodynamics for Bionic Oscillating Hydrofoil Based on Panel Method.

    Science.gov (United States)

    Xue, Gang; Liu, Yanjun; Zhang, Muqun; Ding, Hongpeng

    2016-01-01

    The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype to mimic the shape of tuna is developed with the revolutionized technology of rapid prototyping manufacturing. The hydrodynamic performance for rigid oscillating hydrofoil is analyzed with the proposed method, and it shows good coherence with the cases analyzed by the commercial software Fluent and the experimental data from robofish. Furthermore, the hydrodynamic performance of coupled hydrofoil, which consisted of flexible fish body and rigid caudal fin, is analyzed with the proposed method. It shows that the caudal fin has great influence on trailing vortex shedding and the phase angle is the key factor on hydrodynamic performance. It is verified that the shape of trailing vortex is similar to the image of the motion curve at the trailing edge as the assumption of linear vortex plane under the condition of small downwash velocity. The numerical analysis of hydrodynamics for bionic movement based on the Panel method has certain value to reveal the fish swimming mechanism.

  12. Numerical Analysis of Hydrodynamics for Bionic Oscillating Hydrofoil Based on Panel Method

    Directory of Open Access Journals (Sweden)

    Gang Xue

    2016-01-01

    Full Text Available The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype to mimic the shape of tuna is developed with the revolutionized technology of rapid prototyping manufacturing. The hydrodynamic performance for rigid oscillating hydrofoil is analyzed with the proposed method, and it shows good coherence with the cases analyzed by the commercial software Fluent and the experimental data from robofish. Furthermore, the hydrodynamic performance of coupled hydrofoil, which consisted of flexible fish body and rigid caudal fin, is analyzed with the proposed method. It shows that the caudal fin has great influence on trailing vortex shedding and the phase angle is the key factor on hydrodynamic performance. It is verified that the shape of trailing vortex is similar to the image of the motion curve at the trailing edge as the assumption of linear vortex plane under the condition of small downwash velocity. The numerical analysis of hydrodynamics for bionic movement based on the Panel method has certain value to reveal the fish swimming mechanism.

  13. Numerical Analysis of Hydrodynamics for Bionic Oscillating Hydrofoil Based on Panel Method

    Science.gov (United States)

    2016-01-01

    The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype to mimic the shape of tuna is developed with the revolutionized technology of rapid prototyping manufacturing. The hydrodynamic performance for rigid oscillating hydrofoil is analyzed with the proposed method, and it shows good coherence with the cases analyzed by the commercial software Fluent and the experimental data from robofish. Furthermore, the hydrodynamic performance of coupled hydrofoil, which consisted of flexible fish body and rigid caudal fin, is analyzed with the proposed method. It shows that the caudal fin has great influence on trailing vortex shedding and the phase angle is the key factor on hydrodynamic performance. It is verified that the shape of trailing vortex is similar to the image of the motion curve at the trailing edge as the assumption of linear vortex plane under the condition of small downwash velocity. The numerical analysis of hydrodynamics for bionic movement based on the Panel method has certain value to reveal the fish swimming mechanism. PMID:27578959

  14. Close-field electroporation gene delivery using the cochlear implant electrode array enhances the bionic ear.

    Science.gov (United States)

    Pinyon, Jeremy L; Tadros, Sherif F; Froud, Kristina E; Y Wong, Ann C; Tompson, Isabella T; Crawford, Edward N; Ko, Myungseo; Morris, Renée; Klugmann, Matthias; Housley, Gary D

    2014-04-23

    The cochlear implant is the most successful bionic prosthesis and has transformed the lives of people with profound hearing loss. However, the performance of the "bionic ear" is still largely constrained by the neural interface itself. Current spread inherent to broad monopolar stimulation of the spiral ganglion neuron somata obviates the intrinsic tonotopic mapping of the cochlear nerve. We show in the guinea pig that neurotrophin gene therapy integrated into the cochlear implant improves its performance by stimulating spiral ganglion neurite regeneration. We used the cochlear implant electrode array for novel "close-field" electroporation to transduce mesenchymal cells lining the cochlear perilymphatic canals with a naked complementary DNA gene construct driving expression of brain-derived neurotrophic factor (BDNF) and a green fluorescent protein (GFP) reporter. The focusing of electric fields by particular cochlear implant electrode configurations led to surprisingly efficient gene delivery to adjacent mesenchymal cells. The resulting BDNF expression stimulated regeneration of spiral ganglion neurites, which had atrophied 2 weeks after ototoxic treatment, in a bilateral sensorineural deafness model. In this model, delivery of a control GFP-only vector failed to restore neuron structure, with atrophied neurons indistinguishable from unimplanted cochleae. With BDNF therapy, the regenerated spiral ganglion neurites extended close to the cochlear implant electrodes, with localized ectopic branching. This neural remodeling enabled bipolar stimulation via the cochlear implant array, with low stimulus thresholds and expanded dynamic range of the cochlear nerve, determined via electrically evoked auditory brainstem responses. This development may broadly improve neural interfaces and extend molecular medicine applications.

  15. Design of a Robot End-Effector Grabbing Mechanism Based on a Bionic Snake Mouth

    Directory of Open Access Journals (Sweden)

    Fu Zhuang

    2013-03-01

    Full Text Available Inspired by the bite and swallowing function of a snake’s mouth, a robot end‐effector grabbing mechanism was designed. The grabbing movement is realized by the ‘bite’ function of the bionic snake mouth actuator, and the ‘swallowing’ function insures a continuous grip on the object. To implement the continuous grip function of the new robot end‐effector, the complex motion of a snake’s mouth is simplified into three basic movements based on the anatomy of a snake’s mouth and with a combination of bionics and engineering. The upper jaw consists of a double four‐bar linkage mechanism and the lower jaw mechanism implementing a lateral expansion function are the two elements of the robot end‐effector. The relationship model and the corresponding curves of the actuating force and gripping force are necessary to implement an open‐loop control of the robot end‐effector. Through analysis and simulation, linkage parameters are determined to implement the desired motion.

  16. Multiadaptive Bionic Wavelet Transform: Application to ECG Denoising and Baseline Wandering Reduction

    Directory of Open Access Journals (Sweden)

    Sayadi Omid

    2007-01-01

    Full Text Available We present a new modified wavelet transform, called the multiadaptive bionic wavelet transform (MABWT, that can be applied to ECG signals in order to remove noise from them under a wide range of variations for noise. By using the definition of bionic wavelet transform and adaptively determining both the center frequency of each scale together with the -function, the problem of desired signal decomposition is solved. Applying a new proposed thresholding rule works successfully in denoising the ECG. Moreover by using the multiadaptation scheme, lowpass noisy interference effects on the baseline of ECG will be removed as a direct task. The method was extensively clinically tested with real and simulated ECG signals which showed high performance of noise reduction, comparable to those of wavelet transform (WT. Quantitative evaluation of the proposed algorithm shows that the average SNR improvement of MABWT is 1.82 dB more than the WT-based results, for the best case. Also the procedure has largely proved advantageous over wavelet-based methods for baseline wandering cancellation, including both DC components and baseline drifts.

  17. 后仿生设计方法探析%Study on Methods of Post-Bionic Design

    Institute of Scientific and Technical Information of China (English)

    韩维生

    2011-01-01

    由Peel休闲椅案例分析入手,探寻其理论依据,通过对比现有几种仿生设计概念,分析了Peel休闲椅的设计特点,进而提出了新的概念——后仿生设计。结合分析后仿生设计案例,并融合木材解剖学、木材纹理强化技术和重组装饰材料设计制造技术等研究成果,进一步归纳出后仿生设计的方法,包括仿机械加工形态法、仿物理处理特征法、移植综合处理特征法及仿珍贵材料切面法,以便为今后开展后仿生设计的研究和应用提供理论基础。%Beginning with the case study on Peel chairs, it seek for its theory basis, and its characteristics were discussed by contrast with some existing bionic design concepts, and then a new concept of post-bionic design was proposed. Referring to some cases of post-bionic design and integrating with some results of wood anatomy, the technology of wood veneer imitation by texture intensify and reconstituted decoration lumber production, four methods for post-bionic design were further induced. These methods include machining shape simulation, physical treated characteristic simulation, integrally treated characteristic simulation and precious materials section simulation, which are the theory basis for the study and application of post-bionic design.

  18. 大型交通建筑仿生设计初探%Analysis of Bionic Design of Large-scale Transportation Building

    Institute of Scientific and Technical Information of China (English)

    魏端端; 林耕

    2011-01-01

    通过对建筑仿生学的初步探讨,对已建成的大型交通建筑实例进行详细的分析,归纳和总结了大型交通建筑仿生设计的方法,即仿生物形式美的设计,仿生物功能的设计,仿生物结构的设计,为今后大型交通建筑的设计提供参考和借鉴。%Based on the initial research on architectural bionics and the analysis of large-scale transportation buildings,the author summarizes the bionic design methods of large-scale transportation buildings:the design of form bionic,the design of function bionic

  19. 仿生非光滑理论在油气井工程中的应用%Application of bionic non-smooth theory in oil/gas well

    Institute of Scientific and Technical Information of China (English)

    黄少华

    2015-01-01

    The features of bionics are introduced in this paper along with the application of bionic non-smooth theory in drilling such as bionic rig,string and well.%本文重点介绍仿生学的特性,以及仿生非光滑理论在钻井工程中的应用,主要有仿生钻头,仿生钻柱,仿生井等.

  20. Design and Mechanics Simulation of Bionic Lubrication System of Artificial Joints

    Institute of Scientific and Technical Information of China (English)

    S. H. Su; Z. K. Hua; J. H. Zhang

    2006-01-01

    We propose a new structure for artificial joints with a joint capsule which is designed to overcome the drawback of current prostheses that omit many functions of the lubricant and the joint capsule. The new structure is composed of three components:lubricant, artificial joint and artificial joint capsule. The lubricant sealed in the capsule can not only reduce the wear of the artificial joint but also prevents the wear particles leaking into the body. So unexpected reactions between the wear particles and body can be avoided completely. A three-dimensional (3-D) finite element analysis (FEA) model was created for a bionic knee joint with capsule. The stresses and their distribution in the artificial capsule were simulated with different thickness, loadings,and flexion angles. The results show that the maximum stress occurs in the area between the artificial joint and the capsule. The effects of capsule thickness and the angles of flexion on stress are discussed in detail.

  1. Hemocompatibility research on the micro-structure surface of a bionic heart valve.

    Science.gov (United States)

    Ye, Xia; Wang, Ze; Zhang, Xianghua; Zhou, Ming; Cai, Lan

    2014-01-01

    In order to study how the geometric parameters and shape of the micro-structure surface of a bionic heart valve affects hemocompatibility, mastoid micro-structures with different periodic space were fabricated using a femtosecond laser on a polyurethane (PU) surface. The apparent contact angles of droplets on the micro-structure surfaces were measured to characterize their wettability. Then a series of blood compatibility experiments, including platelet adhesion, dynamic coagulation and hemolysis were completed. The experimental results showed that the micro-structure on the biomaterial surface helped improve its hydrophobicity and hemocompatibility. Also, the periodic space affected not only the hydrophobicity but also the hemocompatibility of the biomaterial. With the increasing of the periodic space, the apparent contact angle increased, the number of platelet adhesion decreased, the dynamic clotting time became longer and the hemolysis ratio reduced. In addition, the shape of the micro-structure also affected the hemocompatibility of the biomaterial.

  2. A DNA Structure-Based Bionic Wavelet Transform and Its Application to DNA Sequence Analysis

    Directory of Open Access Journals (Sweden)

    Fei Chen

    2003-01-01

    Full Text Available DNA sequence analysis is of great significance for increasing our understanding of genomic functions. An important task facing us is the exploration of hidden structural information stored in the DNA sequence. This paper introduces a DNA structure-based adaptive wavelet transform (WT – the bionic wavelet transform (BWT – for DNA sequence analysis. The symbolic DNA sequence can be separated into four channels of indicator sequences. An adaptive symbol-to-number mapping, determined from the structural feature of the DNA sequence, was introduced into WT. It can adjust the weight value of each channel to maximise the useful energy distribution of the whole BWT output. The performance of the proposed BWT was examined by analysing synthetic and real DNA sequences. Results show that BWT performs better than traditional WT in presenting greater energy distribution. This new BWT method should be useful for the detection of the latent structural features in future DNA sequence analysis.

  3. Microwave assisted-semi bionic extraction of lignan compounds from Fructus Forsythiae by orthogonal design

    Institute of Scientific and Technical Information of China (English)

    TU Qiu-yun; ZHOU Chun-shan; TANG Jian-ping

    2008-01-01

    Microwave assisted-semi bionic extraction (MASBE) process for lignans from Fructus Forsythiae was studied. The influences of solvent pH value, microwave power, dosage of solvent and irradiation time were investigated. Optimum extracting parameters were determined by orthogonal experiments as follows: pH value of solvent at first extraction is 5.5-6.0, that at the second extraction is 7-8; microwave power is 700 W; mass ratio of Fructus Forsythiae to water is 1:12; irradiation time is 10 min, and extracting times is two. Under these optimal conditions, the yield of lignans reaches 0.364%. Compared with the conventionalextraction methods, the MASBE process has the advantages of high extraction rate, high extraction selectivity.

  4. Phylogenetic position of sponges in early metazoan evolution and bionic applications of siliceous sponge spicules

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Sponges are the oldest and the simplest but not primitive multicellular animals. They represent the earliest evolutionary metazoan phylum still extant. It was a long and painful scientific process to position the most enigmatic and mysterious metazoan, the Porifera, into their correct phylogenetic place among the eukaryotes in general and multicellular animals in particular. As living fossils, sponges provide the best evidence for the early evolution of Metazoa. More recently, interest has been focused on the bionic applications of sponges' siliceous spicules, after the discovery of their unique structure and high fiber performance. In this review, the emergence of sponges, evolutionary novelties found in sponges, and the phylogenetic position of sponges in early metazoan evolution are highlighted. In addition, the pre-sent state of knowledge on silicatein-mediated "biosilica" formation in marine sponges, including the involvement of other molecules in silica metabolism and their potential application in nanobiotechnol-ogy and medicine, is given.

  5. Experimental Observation of the Skeletal Adaptive Repair Mechanism and Bionic Topology Optimization Method

    Directory of Open Access Journals (Sweden)

    Kaysar Rahman

    2014-01-01

    Full Text Available Bone adaptive repair theory considers that the external load is the direct source of bone remodeling; bone achieves its maintenance by remodeling some microscopic damages due to external load during the process. This paper firstly observes CT data from the whole self-repairing process in bone defects in rabbit femur. Experimental result shows that during self-repairing process there exists an interaction relationship between spongy bone and enamel bone volume changes of bone defect, that is when volume of spongy bone increases, enamel bone decreases, and when volume of spongy bone decreases, enamel bone increases. Secondly according to this feature a bone remodeling model based on cross-type reaction-diffusion system influenced by mechanical stress is proposed. Finally, this model coupled with finite element method by using the element adding and removing process is used to simulate the self-repairing process and engineering optimization problems by considering the idea of bionic topology optimization.

  6. Bionic design of integrate structures%整合结构的仿生设计

    Institute of Scientific and Technical Information of China (English)

    汪久根; 张建忠; 薛峥

    2007-01-01

    Natural materials are formed with integral structures. Based on the achievements of our predecessors, the microstructures of some natural materials were decoded, and the configurations of integrated structures were interpreted with graded, porous, fractal and composite forms. The composition and spatial gradients of multiple kinds of physical parameters, which included elastic modulus, hardness, surface tension, stiffness, damping factor, density, heat conduction, electrical resistance factor, magnetic conductive factor, light penetration factor etc, are summarized. The 2-D and 3-D porous structures were analyzed, which had different types of voids and configurations. Then the fractal and gradient fractal rules were described with leaf structure. Moreover, the particulate and fibrous composite structures were developed with the combination of graded, porous and fractal rules. Finally, complex bionic design based on nets of blood vessels and nerves were proposed,which could be applied in structure design of mechanical parts.

  7. Super-hydrophobic surfaces from a simple coating method: a bionic nanoengineering approach

    Energy Technology Data Exchange (ETDEWEB)

    Liu Yuyang; Chen Xianqiong; Xin, J H [Nanotechnology Center, ITC, Hong Kong Polytechnic University, Hong Kong (China)

    2006-07-14

    Inspired by the self-cleaning behaviour of lotus leaves in nature, we developed a simple coating method that can facilitate the bionic creation of super-hydrophobic surfaces on various substrates, thus providing a feasible way of fabricating super-hydrophobic surfaces for civil and industrial applications. Micro-nanoscale binary structured composite particles of silica/fluoropolymer were prepared using an emulsion-mediated sol-gel process, and then these composite particles were applied to various substrates to mimic the surface microstructures of lotus leaves. Super-hydrophobic surfaces with a water contact angle larger than 150 deg. are obtained, and these super-hydrophobic surfaces are expected to have potential applications for rusting-resistant, anti-fog and self-cleaning treatments.

  8. Survey of Visual Control Bionics%视觉仿生控制研究综述

    Institute of Scientific and Technical Information of China (English)

    毛晓波; 陈铁军

    2013-01-01

    借鉴生物头眼协调运动灵活改变视线的神经控制机理构建智能仿生眼是机器人视觉控制研究的新热点.本综述分析了灵长类动物眼球运动的特点及其利用价值,从视觉仿生控制的视角,对国内外仿生机器眼的研究现状、存在的问题和发展趋势做了概括和总结.就利用生理学、仿生学和控制理论等多学科交叉融合的方法开展研究,针对多自由度双目头颈运动建模、机器人3D头眼协调运动控制、视觉偏差补偿算法以及视觉跟踪模式自适应切换策略等视觉控制难题,进行了讨论和展望.%Developing intelligent biomimetic eye is a new hot issue in the domain of robot visual control, which is based on neurophysiological mechanism of biological coordinated head-eye movement during gaze shift. In this work, oculomotor characteristics of primates and its utility values were reviewed, and next, the worldwide research status and development direction of biomimetic eye from the view of visual control were summarized. Some new bionic ideas and policies were given as well, such as making use of physiology, bionics, control theory and interdisciplinary study to explore multi-degree-of-freedom binocular biomimetic eye model, 3D head-eye coordinated control method, robot visual error compensation algorithms and adaptive patterns switching strategy of robot visual tracking.

  9. A bio-inspired test system for bionic above-knee prosthetic knees

    Science.gov (United States)

    Wang, Dai-Hua; Xu, Lei; Fu, Qiang; Yuan, Gang

    2013-04-01

    Recently, prosthetic knees in the developing stage are usually tested by installing them on amputees' stumps directly or on above-knee prostheses (AKPs) test platforms. Although amputees can fully provide the actual motion state of the thigh, immature prosthetic knees may hurt amputees. For AKPs test platforms, it just can partly simulate the actual motion state of the thigh with limitation of the motion curve of the thigh, the merits or demerits of newly developed bionic above-knee prosthetic knees cannot be accessed thoroughly. Aiming at the defects of two testing methods, this paper presents a bio-inspired AKPs test system for bionic above-knee prosthetic knees. The proposed bio-inspired AKPs test system is composed of a AKPs test platform, a control system, and a bio-inspired system. The AKPs test platform generates the motion of the thigh simulation mechanism (TSM) via two screw pairs with servo motors. The bio-inspired system includes the tester and the bio-inspired sensor wore by the tester. The control system, which is inspired by the bio-inspired system, generates the control command signal to move the TSM of the AKPs test platform. The bio-inspired AKPs test system is developed and experimentally tested with a commercially available prosthetic knee. The research results show that the bio-inspired AKPs test system can not only ensure the safety of the testers, but also track all kinds of the actual motion state of the thigh of the testers in real time.

  10. A novel in situ device based on a bionic piezoelectric actuator to study tensile and fatigue properties of bulk materials

    Science.gov (United States)

    Wang, Shupeng; Zhang, Zhihui; Ren, Luquan; Zhao, Hongwei; Liang, Yunhong; Zhu, Bing

    2014-06-01

    In this work, a miniaturized device based on a bionic piezoelectric actuator was developed to investigate the static tensile and dynamic fatigue properties of bulk materials. The device mainly consists of a bionic stepping piezoelectric actuator based on wedge block clamping, a pair of grippers, and a set of precise signal test system. Tensile and fatigue examinations share a set of driving system and a set of signal test system. In situ tensile and fatigue examinations under scanning electron microscope or metallographic microscope could be carried out due to the miniaturized dimensions of the device. The structure and working principle of the device were discussed and the effects of output difference between two piezoelectric stacks on the device were theoretically analyzed. The tensile and fatigue examinations on ordinary copper were carried out using this device and its feasibility was verified through the comparison tests with a commercial tensile examination instrument.

  11. A novel in situ device based on a bionic piezoelectric actuator to study tensile and fatigue properties of bulk materials

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Shupeng; Zhang, Zhihui, E-mail: zhzh@jlu.edu.cn; Ren, Luquan; Liang, Yunhong [The Key Laboratory of Engineering Bionics (Ministry of Education) and the College of Biological and Agricultural Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025 (China); Zhao, Hongwei [College of Mechanical Science and Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025 (China); Zhu, Bing [College of Automotive Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025 (China)

    2014-06-15

    In this work, a miniaturized device based on a bionic piezoelectric actuator was developed to investigate the static tensile and dynamic fatigue properties of bulk materials. The device mainly consists of a bionic stepping piezoelectric actuator based on wedge block clamping, a pair of grippers, and a set of precise signal test system. Tensile and fatigue examinations share a set of driving system and a set of signal test system. In situ tensile and fatigue examinations under scanning electron microscope or metallographic microscope could be carried out due to the miniaturized dimensions of the device. The structure and working principle of the device were discussed and the effects of output difference between two piezoelectric stacks on the device were theoretically analyzed. The tensile and fatigue examinations on ordinary copper were carried out using this device and its feasibility was verified through the comparison tests with a commercial tensile examination instrument.

  12. A novel in situ device based on a bionic piezoelectric actuator to study tensile and fatigue properties of bulk materials.

    Science.gov (United States)

    Wang, Shupeng; Zhang, Zhihui; Ren, Luquan; Zhao, Hongwei; Liang, Yunhong; Zhu, Bing

    2014-06-01

    In this work, a miniaturized device based on a bionic piezoelectric actuator was developed to investigate the static tensile and dynamic fatigue properties of bulk materials. The device mainly consists of a bionic stepping piezoelectric actuator based on wedge block clamping, a pair of grippers, and a set of precise signal test system. Tensile and fatigue examinations share a set of driving system and a set of signal test system. In situ tensile and fatigue examinations under scanning electron microscope or metallographic microscope could be carried out due to the miniaturized dimensions of the device. The structure and working principle of the device were discussed and the effects of output difference between two piezoelectric stacks on the device were theoretically analyzed. The tensile and fatigue examinations on ordinary copper were carried out using this device and its feasibility was verified through the comparison tests with a commercial tensile examination instrument.

  13. Design and Experiment on Bionic Chewing Equipment%仿生咀嚼装置设计与试验

    Institute of Scientific and Technical Information of China (English)

    孙钟雷; 孙永海; 万鹏; 李君兴

    2011-01-01

    模仿人类咀嚼系统,利用仿生技术设计了一种用于粉碎食物的仿生咀嚼装置.采用逆向工程方法设计制作了仿生牙齿、仿生颞下颌关节等零部件,并组装成咀嚼装置,实现了三维咀嚼运动,确定了运动参数.咀嚼功能测试结果表明,本装置的咬合力可达到咀嚼食物的力量,并且可根据食物的不同而改变;本装置的咀嚼效率和受试者无显著差异,最大值可达92.3%;重复试验无显著差异,本装置稳定可靠.%A bionic chewing equipment was developed for food breakdown by simulating the masticatory system and using the bionic technology. Some parts were designed and assembled by reverse engineering method, like bionic teeth and temporomandibular joints. The equipment could realize 3-D chewing motion, the movement parameters were determined. Test of occlusive force showed that chewing force of equipment could break food and change with food. Masticatory experiment showed that masticatory efficiency of the equipment had no significant difference with subjects and its maximum value was 92. 3% . The bionic chewing equipment was stable and reliable.

  14. Effects of bionic units on the fatigue wear of gray cast iron surface with different shapes and distributions

    Science.gov (United States)

    Chen, Zhi-kai; Lu, Shu-chao; Song, Xi-bin; Zhang, Haifeng; Yang, Wan-shi; Zhou, Hong

    2015-03-01

    To improve the fatigue wear resistance of gray cast iron (GCI), GCI samples were modified by a laser to imitate the unique structure of some soil animals alternating between soft and hard phases; the hard phase resists the deformation and the soft phase releases the deformation. Using the self-controlled fatigue wear test method, the fatigue wear behaviors of treated and untreated samples were investigated and compared experimentally. The results show that the bionic non-smooth surface obtains a beneficial effect on improving the fatigue wear resistance of a sample, and the fatigue wear resistance of the bionic sample assembled with reticulate units (60°+0°), whose mass loss was reduced by 62%, was superior to the others. Meanwhile, a finite element (FE) was used to simulate the compression and the distributions of strain and stress on the non-smooth surface was inferred. From these results, we understood that the functions of the bionic unit such as reducing strain and stress, and also obstructing the closure and propagation of cracks were the main reasons for improving the fatigue wear property of GCI.

  15. [Study on the acid hydrolysis, fiber remodeling and bionics mineralization of rat tail tendon collagen type Ⅰ].

    Science.gov (United States)

    Zhang, Zhan; Zhang, Chun; Guo, Qiaofeng

    2016-05-25

    Objective: To produce bionic bone material that is consistent with human bone in chemical composition and molecular structure using rat tail tendon collagen type Ⅰ. Methods: The type Ⅰcollagen derived from rat tail was extracted by acetic acid to form collagen fibers. The reconstructed collagen fibers were placed in the mineralized solution to mimic bone mineralization for 2-6 days. Bone mineralization was observed by transmission electron microscopy and electron diffraction.Results: Collagen fibers with characteristic D-Band structure were reconstructed by using rat tail tendon collagen type Ⅰ extracted with acid hydrolysis method. Transmission electron microscopy and electron diffraction showed that calcium hydroxyapatite precursor infiltrated into the collagen fibers, and the collagen fibers were partially mineralized after 2 days of mineralization; the collagen fibers were completely mineralized and bionic bone material of typeⅠ collagen/calcium hydroxyapatite was formed after 6 days of mineralization.Conclusion: The collagen type Ⅰ can be extracted from rat tail tendon by acid hydrolysis method, and can be reformed and mineralized to form the bionic bone material which mimics human bone in chemical composition and the molecular structure.

  16. Discussion on the Application of Bionics in Architecture Design%浅谈仿生学在建筑设计中的应用

    Institute of Scientific and Technical Information of China (English)

    赵亚飞

    2014-01-01

    本文通过研究仿生学的文献综述,探讨将其应用于建筑设计领域和发展的现状。列举了仿生学的研究阶段,并分别介绍了仿生原理在建筑设计领域中应用的四种形态,提出了过程仿生才是仿生学在建筑设计中的核心应用体现,分析了该领域的发展前景。%This paper, through literature review of the res-earch of bionics, discussed the status of its application in the architectural design field. The author listed the research stage of bionics, and introduced four forms of the application of bi-onic principle in the architectural design field and put forward the process of bionic is the embodiment of the core application of Bionics in architecture design, analyzing the development prospect of this field.

  17. Fuzzy-GA PID controller with incomplete derivation and its application to intelligent bionic artificial leg

    Institute of Scientific and Technical Information of China (English)

    谭冠政; 李安平

    2003-01-01

    An optimal PID controller with incomplete derivation is proposed based on fuzzy inference and the geneticalgorithm, which is called the fuzzy-GA PID controller with incomplete derivation. It consists of the off-line part andthe on-line part. In the off-line part, by taking the overshoot, rise time, and settling time of system unit step re-sponse as the performance indexes and by using the genetic algorithm, a group of optimal PID parameters K*p , Ti* ,and Tj are obtained, which are used as the initial values for the on-line tuning of PID parameters. In the on-linepart, based on K; , Ti* , and T*d and according to the current system error e and its time derivative, a dedicatedprogram is written, which is used to optimize and adjust the PID parameters on line through a fuzzy inference mech-anism to ensure that the system response has optimal dynamic and steady-state performance. The controller has beenused to control the D. C. motor of the intelligent bionic artificial leg designed by the authors. The result of computersimulation shows that this kind of optimal PID controller has excellent control performance and robust performance.

  18. Unifying inflation with late-time acceleration by a BIonic system

    Directory of Open Access Journals (Sweden)

    Alireza Sepehri

    2015-07-01

    Full Text Available We propose a cosmological model that unifies inflation, deceleration and acceleration phases of expansion history by a BIonic system. At the beginning, there are k black fundamental strings that transited to the BIon configuration at a given corresponding point. Here, two coupled universes, brane and antibrane, are created interacting each other through a wormhole and inflate. With decreasing temperature, the energy of this wormhole flows into the universe branes and leads to inflation. After a short time, the wormhole evaporates, the inflation ends and a deceleration epoch starts. By approaching the brane and antibrane universes together, a tachyon is born, grows and causes the creation of a new wormhole. At this time, the brane and antibrane universes result connected again and the late-time acceleration era of the universe begins. We compare our model with previous unified phantom models and observational data obtaining some cosmological parameters like temperature in terms of time. We also find that deceleration parameter is negative during inflation and late-time acceleration epochs, while it is positive during the deceleration era. This means that the model is consistent, in principle, with cosmological observations.

  19. Bionic Ears: Their Development and Future Advances Using Neurotrophins and Inherently Conducting Polymers

    Directory of Open Access Journals (Sweden)

    Graeme M. Clark

    2004-01-01

    Full Text Available The development of the multiple-channel bionic ear for hearing and speech understanding in profoundly deaf people is the result of integrating biological and physical sciences with engineering. It is the first clinically successful restoration of sensory and brain function, and brings electronic technology into a direct functional relationship with human consciousness. It presently transmits essential place and coarse temporal information for the coding of frequency, but the fine temporal and place excitation of groups of nerve fibres is inadequate for high-fidelity sound. This is required for adequate musical appreciation and hearing in noise. Research has demonstrated that nerve growth factors preserve the peripheral processes of the auditory nerves so that an electrode array placed close to these fibres could produce this fine temporal and spatial coding. The nerve growth factors can be incorporated into inherently conducting polymers that are part of the array so the peripheral processes can be preserved at the same time as they are electrically stimulated.

  20. Bionic approach for the prevention of exit-site infections of percutaneous devices.

    Science.gov (United States)

    Großhauser, Johannes; Reiter, Katja; Große-Siestrup, Christian; Kikhney, Judith; Kertzscher, Ulrich; Affeld, Klaus

    2015-06-01

    Exit-site infections remain one of the main complications for percutaneous devices, such as catheters for peritoneal dialysis or drivelines for ventricular assist devices. Many efforts have been made to create a biological seal, yet without long-term success. This study investigates a new kind of percutaneous device which is coated with an extricable polymeric membrane. The bionic approach applies the naturally outwards directed growth of skin structures to technology: by pulling the protective membrane it slowly grows out of the body and a developing sulcus is exposed to dry air and an infection is avoided. In a feasibility study this kind of device was shown to reduce the rate of infection. To further investigate these devices, they were implanted in the skin of goats and observed for a period of more than 500 days. The membranes were pulled with a force of up to 2 N and the resulting movement was recorded. When being pulled, the membranes moved 0.4-0.9 mm per week, showing that the application of a continuously acting, defined force on the protective membrane causes the desired slow movement.

  1. Research on the image fusion and target extraction based on bionic compound eye system

    Science.gov (United States)

    Zhang, Shaowei; Hao, Qun; Song, Yong; Wang, Zihan; Zhang, Kaiyu; Zhang, Shiyu

    2015-08-01

    People attach more and more importance to bionic compound eye due to its advantages such as small volume, large field of view and sensitivity to high-speed moving objects. Small field of view and large volume are the disadvantages of traditional image sensor and in order to avoid these defects, this paper intends to build a set of compound eye system based on insect compound eye structure and visual processing mechanism. In the center of this system is the primary sensor which has high resolution ratio. The primary sensor is surrounded by the other six sensors which have low resolution ratio. Based on this system, this paper will study the target image fusion and extraction method by using plane compound eye structure. This paper designs a control module which can combine the distinguishing features of high resolution image with local features of low resolution image so as to conduct target detection, recognition and location. Compared with traditional ways, the way of high resolution in the center and low resolution around makes this system own the advantages of high resolution and large field of view and enables the system to detect the object quickly and recognize the object accurately.

  2. Unifying inflation with late-time acceleration by a BIonic system

    Science.gov (United States)

    Sepehri, Alireza; Rahaman, Farook; Setare, Mohammad Reza; Pradhan, Anirudh; Capozziello, Salvatore; Sardar, Iftikar Hossain

    2015-07-01

    We propose a cosmological model that unifies inflation, deceleration and acceleration phases of expansion history by a BIonic system. At the beginning, there are k black fundamental strings that transited to the BIon configuration at a given corresponding point. Here, two coupled universes, brane and antibrane, are created interacting each other through a wormhole and inflate. With decreasing temperature, the energy of this wormhole flows into the universe branes and leads to inflation. After a short time, the wormhole evaporates, the inflation ends and a deceleration epoch starts. By approaching the brane and antibrane universes together, a tachyon is born, grows and causes the creation of a new wormhole. At this time, the brane and antibrane universes result connected again and the late-time acceleration era of the universe begins. We compare our model with previous unified phantom models and observational data obtaining some cosmological parameters like temperature in terms of time. We also find that deceleration parameter is negative during inflation and late-time acceleration epochs, while it is positive during the deceleration era. This means that the model is consistent, in principle, with cosmological observations.

  3. Bionic optical imaging system with aspheric solid-liquid mixed variable-focus lens

    Science.gov (United States)

    Du, Jia-Wei; Wang, Xuan-Yin; Liang, Dan

    2016-02-01

    A bionic optical imaging system with an aspheric solid-liquid mixed variable-focus lens was designed and fabricated. The entire system mainly consisted of a doublet lens, a solid-liquid mixed variable-focus lens, a connecting part, and a CCD imaging device. To mimic the structure of the crystalline lens, the solid-liquid mixed variable-focus lens consisted of a polydimethylsiloxane (PDMS) lens, a polymethyl methacrylate lens, and the liquid of ethyl silicone oil. By pumping liquid in or out of the cavity using a microinjector, the curvatures of the front and rear surfaces of the PDMS lens were varied, resulting in a change of focal length. The overall structure of the system was presented, as well as a detailed description of the solid-liquid mixed variable-focus lens, material, and fabrication process. Under different injection volumes, the deformation of the PDMS lens was measured and simulated, pictures were captured, and the optical performance was analyzed in simulations and experiments. The focal length of the system ranged from 25.05 to 14.61 mm, and the variation of the diopter was 28.5D, which was larger than that of the human eye.

  4. 仿生学的启示%Enlightenment from Bionics

    Institute of Scientific and Technical Information of China (English)

    李保峰

    2002-01-01

    达尔文生物进化论的核心是"适者生存",经过亿万年进化,生物发展了多样化的"技术路线"以适应环境.生物对自然的适应性进化启发了人类."技术生物学"(Technical Biology)和"仿生学"(Bionic)的概念在许多领域取得了巨大的成功.但传统的建筑学一直延用非生命体的方法思考建筑问题,建筑师已经习惯于请设备工程师用贴"创可贴"的办法去解决建筑物的舒适性问题,在这种模式下工作,资源的浪费自不待言.本文重点阐述"仿生学"对建筑学的启发意义.

  5. Investigation on 3Dt wake flow structures of swimming bionic fish

    Institute of Scientific and Technical Information of China (English)

    G.-X.Shen; G.-K.Tan; G.-J.Lai

    2012-01-01

    A bionic experimental platform was designed for the purpose of investigating time accurate three-dimensional flow field,using digital particle image velocimetry (DSPIV).The wake behind the flapping trail of a robotic fish model was studied at high spatial resolution.The study was performed in a water channel.A robot fish model was designed and built.The model was fixed onto a rigid support framework using a cable-supporting method,with twelve stretched wires.The entire tail of the model can perform prescribed motions in two degrees of freedom,mainly in carangiform mode,by driving its afterbody and lunate caudal fin respectively The DSPIV system was set up to operate in a translational manner,measuring velocity field in a series of parallel slices.Phase locked measurements were repeated for a number of runs,allowing reconstruction of phase average flow field.Vortex structures with phase history of the wake were obtained.The study reveals some new and complex three-dimensional flow structures in the wake of the fish,including "reverse hairpin vortex" and "reverse Karman S-H vortex rings",allowing insight into physics of this complex flow.

  6. Can Quick Release Experiments Reveal the Muscle Structure? A Bionic Approach

    Institute of Scientific and Technical Information of China (English)

    D. F. B. Haeufle; M. Günther; R. Blickhan; S. Schmitt

    2012-01-01

    The goal of this study was to understand the macroscopic mechanical structure and function of biological muscle with respect to its dynamic role in the contraction.A recently published muscle model,deriving the hyperbolic force-velocity relation from first-order mechanical principles,predicts different force-velocity operating points for different load situations.With anew approach,this model could be simplified and thus,transferred into a numerical simulation and a hardware experiment.Two types of quick release experiments were performed in simulation and with the hardware setup,which represent two extreme cases of the contraction dynamics:against a constant force (isotonic) and against an inertial mass.Both experiments revealed hyperbolic or hyperbolic-like force-velocity relations.Interestingly,the analytical model not only predicts these extreme cases,but also additionally all contraction states in between.It was possible to validate these predictions with the numerical model and the hardware experiment.These results prove that the origin of the hyperbolic force-velocity relation can be mechanically explained on a macroscopic level by the dynamical interaction of three mechanical elements.The implications for the interpretation of biological muscle experiments and the realization of muscle-like bionic actuators are discussed.

  7. Investigation on 3D t wake flow structures of swimming bionic fish

    Science.gov (United States)

    Shen, G.-X.; Tan, G.-K.; Lai, G.-J.

    2012-10-01

    A bionic experimental platform was designed for the purpose of investigating time accurate three-dimensional flow field, using digital particle image velocimetry (DSPIV). The wake behind the flapping trail of a robotic fish model was studied at high spatial resolution. The study was performed in a water channel. A robot fish model was designed and built. The model was fixed onto a rigid support framework using a cable-supporting method, with twelve stretched wires. The entire tail of the model can perform prescribed motions in two degrees of freedom, mainly in carangiform mode, by driving its afterbody and lunate caudal fin respectively. The DSPIV system was set up to operate in a translational manner, measuring velocity field in a series of parallel slices. Phase locked measurements were repeated for a number of runs, allowing reconstruction of phase average flow field. Vortex structures with phase history of the wake were obtained. The study reveals some new and complex three-dimensional flow structures in the wake of the fish, including "reverse hairpin vortex" and "reverse Karman S-H vortex rings", allowing insight into physics of this complex flow.

  8. Numerical simulation on drag reduction of revolution body through bionic riblet surface

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Numerical simulations of flow fields on the bionic riblet and the smooth revolution bodies were performed based on the SST k-ω turbulence model in order to explain the mechanisms of the skin friction drag reduction, base drag reduction on the riblet surface, and flow control behaviors of riblet surface near the wall. The simulation results show that the riblet surface arranged on the rearward of the revolution body can reduce the skin friction drag by 8.27%, the base drag by 9.91% and the total drag by 8.59% at Ma number 0.8. The riblet surface reduces the skin friction drag by reducing the velocity gradient and turbulent intensity, and reduces the base drag by weakening the pumping action on the dead water region which behind the body of revolution caused by the external flow. The flow control behavior on boundary layer shows that the riblet surface can cut the low-speed flow near the wall effectively, and restrain the low-speed flow concentrating in span direction, thus weaken the instability of the low speed steaks produced by turbulent flow bursting.

  9. Unifying inflation with late-time acceleration by a BIonic system

    Energy Technology Data Exchange (ETDEWEB)

    Sepehri, Alireza, E-mail: alireza.sepehri@uk.ac.ir [Faculty of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of); Rahaman, Farook, E-mail: rahaman@iucaa.ernet.in [Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal (India); Setare, Mohammad Reza, E-mail: rezakord@ipm.ir [Department of Science, Campus of Bijar, University of Kurdistan, Bijar (Iran, Islamic Republic of); Pradhan, Anirudh, E-mail: pradhan@iucaa.ernet.in [Department of Mathematics, Institute of Applied Sciences & Humanities, GLA University, Mathura-281 406, U.P. (India); Capozziello, Salvatore, E-mail: capozziello@na.infn.it [Dipartimento di Fisica, Universitá di Napoli “Federico II”, I-80126 Napoli (Italy); INFN Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Edificio G, I-80126 Napoli (Italy); Gran Sasso Science Institute (INFN), Viale F. Crispi, 7, I-67100 L' Aquila (Italy); Sardar, Iftikar Hossain, E-mail: iftikar.spm@gmail.com [Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal (India)

    2015-07-30

    We propose a cosmological model that unifies inflation, deceleration and acceleration phases of expansion history by a BIonic system. At the beginning, there are k black fundamental strings that transited to the BIon configuration at a given corresponding point. Here, two coupled universes, brane and antibrane, are created interacting each other through a wormhole and inflate. With decreasing temperature, the energy of this wormhole flows into the universe branes and leads to inflation. After a short time, the wormhole evaporates, the inflation ends and a deceleration epoch starts. By approaching the brane and antibrane universes together, a tachyon is born, grows and causes the creation of a new wormhole. At this time, the brane and antibrane universes result connected again and the late-time acceleration era of the universe begins. We compare our model with previous unified phantom models and observational data obtaining some cosmological parameters like temperature in terms of time. We also find that deceleration parameter is negative during inflation and late-time acceleration epochs, while it is positive during the deceleration era. This means that the model is consistent, in principle, with cosmological observations.

  10. Butterfly scales as bionic templates for complex ordered nanophotonic materials: A pathway to biomimetic plasmonics

    Science.gov (United States)

    Jakšić, Zoran; Pantelić, Dejan; Sarajlić, Milija; Savić-Šević, Svetlana; Matović, Jovan; Jelenković, Branislav; Vasiljević-Radović, Dana; Ćurčić, Srećko; Vuković, Slobodan; Pavlović, Vladimir; Buha, Jelena; Lačković, Vesna; Labudović-Borović, Milica; Ćurčić, Božidar

    2013-08-01

    In this paper we propose a possible use of butterfly scales as templates for ordered 2D or 3D nanophotonic materials, with complexity not easily reproducible by conventional micro/nanofabrication methods. Functionalization through laminar nanocompositing is utilized to impart novel properties to the biological scaffold. An extremely wide variability of butterfly scale forms, shapes, sizes and fine structures is observed in nature, many of them already possessing peculiar optical properties. Their nanophotonic functionalization ensures a large choice of forms and functions, including enhanced light localization, light and plasmon waveguiding and general metamaterial behavior, to mention a few. We show that one is able to achieve a combination of plasmonics and bionics, resulting in functionalities seldom if ever met in nature. As an illustration we have analyzed the photonic properties of the nanostructured scales on the wings of Purple Emperor butterflies Apatura ilia, Apatura iris and Sasakia charonda. Their intricate nanometer-sized structures produce remarkable ultraviolet-blue iridescence, spectrally and directionally narrow. We present our analysis of their plasmonic/nanophotonic functionalization including preliminary calculations and initial experimental results. As a simple example, we used radiofrequent sputtering to produce nanoaperture-based plasmonic structures at a fraction of the cost and necessary engineering efforts compared to the conventional top-down methods. We conclude that the described pathway to biomimetic plasmonics offers potentials for significant expansion of the nanophotonic and nanoplasmonic material toolbox.

  11. Mechanism Interpretation of the Biological Brain Cooling and Its Inspiration on Bionic Engineering

    Institute of Scientific and Technical Information of China (English)

    Xu Xue; Jing Liu

    2011-01-01

    The brain is one of the most important organs in a biological body which can only work in a relatively stable temperature range. However, many environmental factors in biosphere would cause cerebral temperature fluctuations. To sustain and regulate the brain temperature, many mechanisms of biological brain cooling have been evolved, including Selective Brain Cooling (SBC), cooling through surface water evaporation, respiration, behavior response and using special anatomical appendages. This article is dedicated to present a summarization and systematic interpretation on brain cooling strategies developed in animals by classifying and comparatively analyzing each typical biological brain cooling mechanism from the perspective of bio-heat transfer. Meanwhile, inspirations from such cooling in nature were proposed for developing advanced bionic engineering technologies especially with two focuses on therapeutic hypothermia and computer chip cooling areas. It is expected that many innovations can be achieved along this way to find out new cooling methodologies for a wide variety of industrial applications which will be highly efficient, energy saving, flexible or even intelligent.

  12. Effects of laser parameters on the geometrical characteristics of peg-shaped bionic coupling unit

    Science.gov (United States)

    Zhang, Baoyu; Zhang, Zhihui; Liang, Yunhong; Yan, Qiongqiong; Ren, Luquan

    2014-12-01

    Peg-shaped bionic coupling unit (PBCU) processed by pulse laser is effective in anti-adhesion, anti-drag, anti-wear and anti-fatigue application. To obtain desired structural and morphological characteristics of the PBCU for industrial manufacturing, selection of proper processing parameters gradually becomes a growing important problem. Traditionally, the procedure of parameter selecting is often cost-plus and time-consuming. In this work, a statistical analysis of fabricating PBCU on the surface of medium carbon steel was conducted. The laser processing parameters utilized in the experiment and analysis are peak power 4-8 kW, pulse duration 6-16 ms and defocusing amount 6-10 mm. A series of mathematical models regarding the relationship between geometrical characteristics of PBCU and laser processing parameters were developed and checked. The results indicate that the developed models can be adequately used to control the structural and morphological characteristics of PBCU within the scope of analysis. Based on the models, the formation mechanism of the structural and morphological characteristics under different laser parameters were analyzed and discussed.

  13. Bionic design for surface optimization combining hydrophilic and negative charged biological macromolecules.

    Science.gov (United States)

    Ran, Fen; Song, Haiming; Niu, Xiaoqin; Yang, Aimei; Nie, Shengqiang; Wang, Lingren; Li, Jie; Sun, Shudong; Zhao, Changsheng

    2014-06-01

    While polyethersulfone (PES) membrane represents a promising option for blood purification, the blood compatibility must be dramatically enhanced to meet today's ever-increasing demands for many emerging application. In this study, we report a bionic design for optimization and development of a modified PES membrane combining hydrophilic and negative charged biological macromolecules on its surface. The hydrophilic and ionic charged biological macromolecules sulfonated poly(styrene)-b-poly(methyl methacrylate)-b-poly-(styrene) (PSSMSS) and poly(vinyl pyrrolidone)-b-poly(methyl methacrylate)-b-poly-(vinyl pyrrolidone) were synthesized via reversible addition-fragmentation chain transfer polymerization and used together to modify PES membranes by blending method. A hydrophilic membrane surface with negative charged surface coating was obtained, imitating the hydrophilic and negatively charged structure feature of heparin. The modified PES membranes showed suppressed platelet adhesion, and a prolonged blood clotting time, and thereby improved blood compatibility. In addition, the blood clotting time of the modified membranes increased with the blended PSSMSS amounts increment, indicating that both the hydrophilic and negative charged groups play important roles in improving the blood compatibility of PES membranes.

  14. Elective amputation and bionic substitution restore functional hand use after critical soft tissue injuries

    Science.gov (United States)

    Aszmann, Oskar C.; Vujaklija, Ivan; Roche, Aidan D.; Salminger, Stefan; Herceg, Malvina; Sturma, Agnes; Hruby, Laura A.; Pittermann, Anna; Hofer, Christian; Amsuess, Sebastian; Farina, Dario

    2016-01-01

    Critical soft tissue injuries may lead to a non-functional and insensate limb. In these cases standard reconstructive techniques will not suffice to provide a useful outcome, and solutions outside the biological arena must be considered and offered to these patients. We propose a concept which, after all reconstructive options have been exhausted, involves an elective amputation along with a bionic substitution, implementing an actuated prosthetic hand via a structured tech-neuro-rehabilitation program. Here, three patients are presented in whom this concept has been successfully applied after mutilating hand injuries. Clinical tests conducted before, during and after the procedure, evaluating both functional and psychometric parameters, document the benefits of this approach. Additionally, in one of the patients, we show the possibility of implementing a highly functional and natural control of an advanced prosthesis providing both proportional and simultaneous movements of the wrist and hand for completing tasks of daily living with substantially less compensatory movements compared to the traditional systems. It is concluded that the proposed procedure is a viable solution for re-gaining highly functional hand use following critical soft tissue injuries when existing surgical measures fail. Our results are clinically applicable and can be extended to institutions with similar resources. PMID:27721419

  15. Bionic design. Its idea and present situation; Biotec design. Sono kangaekata to genjo

    Energy Technology Data Exchange (ETDEWEB)

    Oda, J. [Kanazawa University, Ishikawa (Japan). Faculty of Engineering

    1996-03-05

    This paper explains the idea of a bionic design and the present situation of its research. There are numerous subjects to learn from the structure and system of organisms as well as in the process of their generation, evolution and extinction, in connection with the design of artifacts. These subjects are classified into positions for developing new materials, new mechanisms/structures, and new systems or algorithmic models. In other words, they are the development of materials for self-repairing cracks and defects, development of micro-machines or robots from the moving mechanisms and the like of insects and micro-organisms, development of a mechanism for protecting a gigantic structures or systems through the use of an immunity system by antigen and antibody, and so on. The enamel of teeth is an apatite material with the hardness of 5 but actually provided with a strength comparable to the hardness of 6 to 7. Bamboo resists an external force by varying the distribution of vascular bundles in the thickness direction. Thus, the integration of software and hardware is the characteristic of biomaterials. 13 refs., 6 figs.

  16. 截瘫步行器的仿生效果%Bionic effect of reciprocating gait orthosis

    Institute of Scientific and Technical Information of China (English)

    陈文远

    2011-01-01

    BACKGROUND: Reciprocating gait orthosis makes the paraplegia patients walking, but reciprocating gait orthosis can only perform walking rehabilitation training and simple walking, which was far from real walking function compensation.OBJECTIVE: To summarize and analyze construction features, action mechanism and bionic effect of reciprocating gait orthosis.METHODS: We retrieved PubMed Database and Wanfang Database for articles concerning features, bionic effect and clinical application of reciprocating gait orthosis published from January 1990 to December 2008. The key words were "reciprocation gait orthosis, walkabout, bionice". A total of 32 articles were researched.RESULTS AND CONCLUSION: At present, unpowered reciprocating gait orthosis has been extensively utilized , but it can only perform walking rehabilitation training and simple walking, which was far from real walking function compensation for paraplegia patients. The bionic effects of reciprocation gait orthosis and walkabout were poor; gait lacked fidelity; physical ability was greatly consumed. However, the gait orthosis that requires outer energy for supplement can overcome the disadvantage of unpowered gait orthosis. With the wide usage of artificial intellectual technology in robot and many industry fields, its development can provide gait orthosis that has good function, safety, reliability, and bionics.%背景:截瘫步行器的临床应用,使截瘫患者重建步行功能成为可能,但截瘫步行器只为进行步行康复训练及简单的行走,距离真正意义上的步行功能代偿相差还很远.目的:对目前几种截瘫步行器的结构特点、作用机制及仿生效果进行归纳、分析.方法:应用计算机检索1990-01/2008-12 PubMed数据库及万方数据库有关截瘫步行器的特点、仿生效果及临床应用方面的相关文献,英文检索词"reciprocation gait orthosis,walkabout,bionice",中文检索词"截瘫步行器,仿生".检索文献量总计32篇.

  17. 主动型仿生踝关节假肢的设计%Design of powered bionic ankle prosthesis

    Institute of Scientific and Technical Information of China (English)

    赵改平; 曹帅; 尚昆; 阮超; 赵伟钦; 王祯祥; 郭丹

    2011-01-01

    背景:与髋、膝关节假肢设计相对比较成熟的技术相比,踝关节作为人体下肢关节的重要组成部分,也是最为灵活的部分,一直以来研究都比较滞后,相关的假肢踝关节产品未能很好的满足假肢患者的需求.目的:从生物力学、解剖学和生理学角度出发,设计和研制出能在矢状面内做屈伸运动的主动型仿生踝关节假肢装置.方法:根据仿生学原理和人体踝关节在步态行走时的受力特点和生理功能,建立二自由度的主动型仿生踝关节的力学模型,设计假肢踝关节的机械结构与控制系统,其主要部件包括仿生踝关节系统、辅助装置、数据控制系统和数据采集系统.结果与结论:利用研制出的踝关节装置进行系统测试,使用正常人行走时的踝关节角度数据作为输入信号,以步进电机作为动力驱动实现模拟踝关节的运动,通过数据采集系统获得输出的角度数据.测试结果表明仿生踝关节能够跟随输入角度数据运动,实现了仿生踝关节跟随运动的预期目标.%BACKGROUND: Ankle prosthesis has been researched as a focus point for improving living quality of disabled persons suffers from lower limb.OBJECTIVE: To design and manufacture the powered bionic ankle prosthesis based on biomechanics, anatomy and physiology theories.METHODS: According to bionics principle, the stress characteristics and physiological functions of the human ankle joint during gait analysis, mechanics model of ankle prosthesis with two-degree-of-freedom motion is established and mechanical structure and control system of ankle prosthesis are designed. The bionic ankle prosthesis, which includes bionic ankle system, auxiliary devices, data control and data acquisition systems, can do flexion and extension in the sagittal plane.RESULTS AND CONCLUSION: A system testing was performed based on the ankle prosthesis device. The normal human ankle walking gait data as the input signal

  18. 论艺术与仿生学的结缘%On the combination of art and bionics

    Institute of Scientific and Technical Information of China (English)

    张宏梁

    2001-01-01

    建筑仿生、工艺仿生以及人工智能艺术,是艺术与仿生学结缘的三个突出的方面。对之所进行的边缘性研究,旨在用艺术与科学相结合的方法,仿照某些生物的特征、机能,制作新的建筑物、艺术品、工艺品和具有独特审美价值的工业产品。艺术与仿生学的结缘是艺术起源观中的摹仿说在新的科学技术发展时代的一个质的飞跃。在技术美学领域,对艺术与仿生学的结缘尤为重视。%The application of bionics in architecture and industrial art and artificial intelligence are mostimportant areas in which art and bionics are combined. The interdisciplinary research in these areas isaimed at producing new architectural works, art items and industrial products with unique aesthetic valuethrough a combination of art and science and modeling features and functions of animate objects. The com-bination of art and bionics presents an essential step forward of the imitation theory in the study of the ori-gin of art in the new era of highly developed technology and science. This combination is particularly sig-nificant for technological aesthetics.

  19. Affordable self-sufficient, bionic buildings. The necessity of thermal inertia; Betaalbare autarkische, bionische gebouwen. Thermische traagheid noodzakelijk

    Energy Technology Data Exchange (ETDEWEB)

    Schmitz, H. [Afdeling Binnenmilieu en Energie, Arcadis Bouw en Vastgoed, Den Haag (Netherlands)

    2004-03-01

    An overview is given of the development of low-pressure phase change material (PCM) induction units, which are fundamental elements of self-sufficient and bionic construction. Applications of PCM in buildings for climatization are discussed. [Dutch] Het samenwerkingsverband tussen verschillende bedrijven heeft de ontwikkeling van lagedruk, PCM (Phase Change Materials) inductie-units tot gevolg gehad. Deze units vormen een fundamenteel bestanddeel van het autarkisch en bionisch bouwen, dat zo mogelijk kan leiden tot autarkie (zelfvoorzienendheid op energiegebied). Wat zijn de toepassingen van PCM in gebouwen voor de ruimteklimatisering?.

  20. 智能机器人视觉仿生技术研究综述%Intelligent Robot Vision Bionic Technology Research

    Institute of Scientific and Technical Information of China (English)

    张宏基; 葛媛媛

    2013-01-01

    Robot vision bionic technology is the new hot shot in robot vision control area. In this review, based on a detailed analysis of primate eye movement forms and characteristics, the domestic and international research status of building bionic vision with the biological eye movement control mechanism, the problems and future trends are reviewed comprehensively, and new ideas for the visual bionic research are proposed for the current technical problems of robot vision bionic.%机器人视觉仿生技术是机器人视觉控制领域的新热点。本综述在详细分析了灵长类动物眼球运动的形式和特点基础上,对国内外应用生物眼球运动控制机理来构建仿生机器视觉的研究现状、存在的问题及未来发展趋势做了全面综述,并针对目前机器人视觉仿生面临的技术难题,提出了开展视觉仿生研究的新思路和新构想。

  1. Design and development of a ferroelectric micro photo detector for the bionic eye

    Science.gov (United States)

    Song, Yang

    Driven by no effective therapy for Retinitis Pigmentosa and Age Related Macular Degeneration, artificial vision through the development of an artificial retina that can be implanted into the human eye, is being addressed by the Bionic Eye. This dissertation focuses on the study of a photoferroelectric micro photo detector as an implantable retinal prosthesis for vision restoration in patients with above disorders. This implant uses an electrical signal to trigger the appropriate ocular cells of the vision system without resorting to wiring or electrode implantation. The research work includes fabrication of photoferroelectric thin film micro detectors, characterization of these photoferroelectric micro devices as photovoltaic cells, and Finite Element Method (FEM) modeling of the photoferroelectrics and their device-neuron interface. A ferroelectric micro detector exhibiting the photovoltaic effect (PVE) directly adds electrical potential to the neuron membrane outer wall at the focal adhesion regions. The electrical potential then generates a retinal cell membrane potential deflection through a newly developed Direct-Electric-Field-Coupling (DEFC) model. This model is quite different from the traditional electric current model because instead of current directly working on the cell membrane, the PVE current is used to generate a localized high electric potential in the focal adhesion region by working together with the anisotropic high internal impedance of ferroelectric thin films. General electrodes and silicon photodetectors do not have such anisotropy and high impedance, and thus they cannot generate DEFC. This mechanism investigation is very valuable, because it clearly shows that our artificial retina works in a way that is totally different from the traditional current stimulation methods.

  2. Experimental Study on Wave Absorbing Characteristics of Bionic Grass in Coastal Waters%滩海工程中仿生草消浪特性试验研究

    Institute of Scientific and Technical Information of China (English)

    孟强; 吴云云

    2014-01-01

    为了选取最优的仿生草高度和铺设长度,使其更好的应用于滩海海底管线的防护,通过物理模型试验,选取不同的草高、水深、波浪要素和水流速度并测量仿生草前后波高、仿生草内部波浪质点水平速度和仿生草内不同测点的水流速度来分析仿生草的消浪特性和缓流作用的影响规律。试验结果表明:仿生草的消浪特性与草的高度和铺设长度成正比;消浪过程中,波浪作用于仿生草铺设段时,草叶的前后摆动降低了仿生草对海床面的遮蔽效果。仿生草的缓流作用与水深存在一定关系,试验得出在草高为1.25m,水深为4m的情况下,仿生草缓流作用最好。%The purpose of this study is to select the optimum bionic grass height and planting length ,so that it can be better applied to protect the sea pipelines in costal waters .Through physical model tests ,the influence laws of wave dissi-pation characteristics and velocity slowing effects of bionic grass were analysed by selecting different grass height ,water depth ,wave elements and flow velocity .The wave height ,wave particle horizontal velocity in the grass and the flow ve-locity of different points in the grass were measured in the front and at the back of the bionic grass plantation .The test re-sults showed that the wave dissipation characteristics of bionic grass was in proportional to grass height and length .During the wave dissipation process ,when the waves struck on the planted bionic grass ,the shading effect of the seabed surface was reduced by the swinging of the bionic grass .A certain relationship existed between the flow velocity and water depth . The Experiment results indicate that ,the optimum effects of weakening the flow velocity can be achieved when the plant-ed bionic grass height is 1 .25 m and water depth is 4 m .

  3. Effect of thermal fatigue on the wear resistance of graphite cast iron with bionic units processed by laser cladding WC

    Science.gov (United States)

    Jing, Zhengjun; Zhou, Hong; Zhang, Peng; Wang, Chuanwei; Meng, Chao; Cong, Dalong

    2013-04-01

    Thermal fatigue and wear exist simultaneously during the service life of brake discs. Previous researchers only studied thermal fatigue resistance or abrasion resistance of compact graphite cast iron (CGI), rather than combining them together. In this paper, wear resistance after thermal fatigue of CGI was investigated basing on the principle of bionics, which was close to actual service condition of the brake discs. In the meanwhile, the effect of thermal fatigue on wear resistance was also discussed. Non-smooth bionic units were fabricated by laser cladding WC powder with different proportions (50 wt.%, 60 wt.%, 70 wt.%). Microstructure and microhardness of the units were investigated, and wear mass losses of the samples were also compared. The results indicate that thermal fatigue has a negative effect on the wear resistance. After the same thermal fatigue cycles times, the wear resistance of laser cladding WC samples is superior to that of laser remelting ones and their wear resistance enhances with the increase of WC content.

  4. Structural bionic design for high——speed machine tool working table based on distribution rules of leaf veins

    Institute of Scientific and Technical Information of China (English)

    XING DengHai; CHEN WuYi; ZHAO Ling; MA JianFeng

    2012-01-01

    High-speed machine tool working table restrains the machining accuracy and machining efficiency,so lightweight design of the table is an important issue.In nature,leaf has developed a plate structure that maximizes the surface-to-volume ratio.It can be seen as a plate structure stiffened by veins.Compared with a high-speed machine tool working table,leaf veins play a role of supporting part which is similar to that of stiffening ribs,and they can provide some new design ideas for lightweight design of the table.In this paper,distribution rules of leaf veins were investigated,and a structural bionic design for the table was achieved based on regulation of leaf veins.First,statistical analysis on geometric structure of leaf veins was carried out,and four distribution rules were obtained.Then,relevant mechanical models were developed and analyzed in finite element soft-ware.Based on the results from mechanical analysis on those relevant models,the four distribution rules were translated into the design rules and a structural bionic design for the working table was achieved.Both simulation and experimental verifications were carried out,and results showed that the average displacement of the working table was reduced by about 33.9%.

  5. 虚拟仿生手联合仿真研究%Study on Simulation of Virtual Bionic Hand

    Institute of Scientific and Technical Information of China (English)

    尚小晶; 吴忠伟; 徐成波

    2014-01-01

    According to the importance of rehabilitation engineering to the current lives of the people, Intelligent prosthesis as the research object, Adams software and Matlab / Simulink were combined to build bionic model, we use the fuzzy PID control algorithm to analysis the model, reduce unnecessary material and time cost in the procession of practical prosthesis physical design and improve the efficiency of design. Simulation results show that, the virtual bionic hand has a good ability of tracking and can corresponding the gesture stability.%根据目前康复医学工程对人们生活的重要意义,以智能假肢为研究对象,将 Adams 软件和 Matlab/ Simulink 相结合搭建仿生模型,采用模糊 PID 控制算法对仿生手模型进行分析,减少实际假肢物理样机设计过程中不必要的物资和时间耗费,提高设计效率。仿真实验表明,虚拟仿生手具有较好的跟踪能力,能够稳定的完成相应手势动作。

  6. Estimation of the age and amount of brown rice plant hoppers based on bionic electronic nose use.

    Science.gov (United States)

    Xu, Sai; Zhou, Zhiyan; Lu, Huazhong; Luo, Xiwen; Lan, Yubin; Zhang, Yang; Li, Yanfang

    2014-09-29

    The brown rice plant hopper (BRPH), Nilaparvata lugens (Stal), is one of the most important insect pests affecting rice and causes serious damage to the yield and quality of rice plants in Asia. This study used bionic electronic nose technology to sample BRPH volatiles, which vary in age and amount. Principal component analysis (PCA), linear discrimination analysis (LDA), probabilistic neural network (PNN), BP neural network (BPNN) and loading analysis (Loadings) techniques were used to analyze the sampling data. The results indicate that the PCA and LDA classification ability is poor, but the LDA classification displays superior performance relative to PCA. When a PNN was used to evaluate the BRPH age and amount, the classification rates of the training set were 100% and 96.67%, respectively, and the classification rates of the test set were 90.67% and 64.67%, respectively. When BPNN was used for the evaluation of the BRPH age and amount, the classification accuracies of the training set were 100% and 48.93%, respectively, and the classification accuracies of the test set were 96.67% and 47.33%, respectively. Loadings for BRPH volatiles indicate that the main elements of BRPHs' volatiles are sulfur-containing organics, aromatics, sulfur-and chlorine-containing organics and nitrogen oxides, which provide a reference for sensors chosen when exploited in specialized BRPH identification devices. This research proves the feasibility and broad application prospects of bionic electronic noses for BRPH recognition.

  7. A critical review of interfaces with the peripheral nervous system for the control of neuroprostheses and hybrid bionic systems.

    Science.gov (United States)

    Navarro, Xavier; Krueger, Thilo B; Lago, Natalia; Micera, Silvestro; Stieglitz, Thomas; Dario, Paolo

    2005-09-01

    Considerable scientific and technological efforts have been devoted to develop neuroprostheses and hybrid bionic systems that link the human nervous system with electronic or robotic prostheses, with the main aim of restoring motor and sensory functions in disabled patients. A number of neuroprostheses use interfaces with peripheral nerves or muscles for neuromuscular stimulation and signal recording. Herein, we provide a critical overview of the peripheral interfaces available and trace their use from research to clinical application in controlling artificial and robotic prostheses. The first section reviews the different types of non-invasive and invasive electrodes, which include surface and muscular electrodes that can record EMG signals from and stimulate the underlying or implanted muscles. Extraneural electrodes, such as cuff and epineurial electrodes, provide simultaneous interface with many axons in the nerve, whereas intrafascicular, penetrating, and regenerative electrodes may contact small groups of axons within a nerve fascicle. Biological, technological, and material science issues are also reviewed relative to the problems of electrode design and tissue injury. The last section reviews different strategies for the use of information recorded from peripheral interfaces and the current state of control neuroprostheses and hybrid bionic systems.

  8. 海龟柔性前肢仿生推进研究%Bionic Research on Turtle's Flexible Forelimb Propulsion

    Institute of Scientific and Technical Information of China (English)

    张铭钧; 刘晓白; 徐建安; 储定慧; 闫娜

    2011-01-01

    为探讨水翼法推进方式,进行了海龟柔性前肢仿生技术研究.基于水翼法运动解析,研究了海龟柔性水翼的弦向形变特征、反卡门涡街脱泻及斯特劳哈尔数等,推算出水翼尾涡脱泻的斯特劳哈尔数位于0.2~0.45之间,雷诺数位于3×102~3×104之间;根据海龟水翼粘弹本构特性,研制了半骼式仿生柔性水翼,并对其进行柔性形变和组织模态分析.通过水下仿生实验平台进行了半骼式柔性水翼和全骼式刚性水翼推进的直航、转艏性能对比实验,实验结果显示,虽然柔性水翼只有在较高ω1值拍动时的推进效率才高于刚性水翼,但其速度增长率却始终高于刚性水翼:并且随着ω1值的增长,柔性水翼对于样机速度减振方面的作用一直存在且越来越明显.实验研究结果为柔性水翼操纵与控制研究提供了技术基础.%In order to investigate the hydrofoil propulsion method, the bionic technology of the turtle's flexible forelimbs is studied. Based on the kinematical analysis of turtle hydrofoil, the chordwise deformation characteristics, the reverse Kurman vortex street shedding, and the Strouhal number of flexible hydrofoil are studied, and then it is calculated that the Strouhal number is between 0.2 and 0.45, the Reynolds number is from 3× 102 to 3× 104. According to the viscoelastic constitutive property of turtle hydrofoil, the half-iliac bionic flexible hydrofoil is developed, and its flexible deformation as well as tissue mode are analyzed. By use of the underwater bionic experimental sample, the direct navigation and yawing performance contrast tests of bionic sample with the half-iliac flexible hydrofoil and whole-iliac rigid hydrofoil are conducted respectively.The experiments' results show that, however the propulsion efficiency of flexible hydrofoil is higher than the rigid one only moving at the high value of ω1, the sample's acceleration when propelled by the flexible hydrofoil

  9. 仿生纳米测控技术%Bionics of Nanotechnology for Measurement and Control

    Institute of Scientific and Technical Information of China (English)

    任恕; 周宜开; 吴蒙

    2001-01-01

    讨论了纳米技术、纳米测控技术与仿生纳米测控技术,论述了这一课题的重要意义,包括它对生物医学与工程技术的贡献。提出细胞是研究仿生纳米测控技术的优选对象,细胞膜是其最佳切入点。建立了仿生纳米测控技术的分子系统与分子网络模型。讨论了实现这些模型的纳米制造、生物技术、化学制造与混合制造等方法。强调了广义纳米制造方法的优越性。集成于细胞膜上的分子系统与分子网络是仿生纳米测控技术的典型,前者还可据此构建纳米机器人,后者还可据此组建纳米工厂。对纳米测控技术的应用前景作了展望:指出了它将在测控心理活动;基因的诊断、治疗,组建单细胞纳米测控平台;研制纳米机器与组装纳米工厂等领域所发挥的关键作用。%Nanotechnology,nanotechnology for measurement and control,bionics of nanotechnology are discussed.The significance of the topic including its contribution to biology and medicine as well as to engineering and technology is emphasized.Cell may be the best object to be researched.Cell membrane,may be the key of such a study.By means of simulating the structure and function of a cell's membrane,a molecular systematic model of nanorobot and a molecular network model of nanofactory are suggested.Methodologies for realizing such models are presented.Among them,nanofabrication biotechnology,chemical method and hybrid integration are illustrated.Nanofabrication in a broad sense will be preferable to others.At last,a diagram showing the perspectives of the new technologies including measuring and control of psychological state,establishing platform for monitoring a single cell,constructing nanorobot and nanofactory etc was depicted.

  10. Wear properties of H13 with micron scale and nano scale grains bionic units processed by laser remelting

    Science.gov (United States)

    Zhang, Peng; Zhou, Hong; Wang, Cheng-tao; Liu, Yan; Ren, Lu-quan

    2013-12-01

    By simulating the cuticles of some soil animals, a combination of soft part (untreated substrate) and hard part (laser remelting area) structure was designed on metal surface to get an improved performance. Different specimens were prepared which contained units with micro and nano scale grains. The microstructures were observed by environmental field emission scanning electron microscopy. X-ray diffraction was used to identify the phases. The results of these tests indicate that due to the rapid solidification condition in the water, nano scale grains have a high microhardness between 1300 and 1000 HV. Retained austenite was found in it. Some of them transform to martensite in block on ring wear test. Specimens with bionic unit have a better wear resistance. Especially, the units with nano grains bring a further enhancement. The alternate soft and hard in macroscopic (substrate and laser remelting area) and microscopic (austenite and martensite) structure played a key role in improving the H13 wear resistance.

  11. Synthesis of Bioactive Three-dimensional Silicon-oxide Nanofibrous Structures on the Silicon Substrate for Bionic Devices’ Fabrication

    Directory of Open Access Journals (Sweden)

    Candace Colpitts

    2016-02-01

    Full Text Available Bionic devices are implants that replace biological functions that have been lost due to damaged or lost tissue. The challenge of this area is to find the appropriate materials to match the biocompatible criteria with the same mechanical and electrical performance. In this research, a new method is introduced for the enhance‐ ment of silicon biocompatibility by fabrication of a 3D nanofibrous layer on the silicon surface, induced by nanosecond laser pulses at a high repetition rate and power. It was found that the laser treatment with small‐ er line spacing and a higher overlap number enhanced the biocompatibility of silicon. The results display a promis‐ ing improvement in the biocompatibility of silicon for the production of biomedical devices such as sensors, bio- MEMS and nano-biomaterial fabrications.

  12. [Bionic surface design in metal on metal bearings for total hip arthroplasty--optimization of tribological characteristics].

    Science.gov (United States)

    Böhling, U; Scholz, J; Thomas, W; Grundei, H

    2005-04-01

    Bionic systems are aiming to integrate natural observing into mechanical solutions. This has been realized in the design of metal on metal bearing in total hip resurface arthroplasty. The articular side of the femoral cup is covered with a dimple like surface. Under laboratory condition this so called "surf-metal-cup" achieved a reduction of the mechanical wear to almost a third part in comparison to a metal-cup with plane surface. This advantage, caused by the reduced friction-coefficient due to improved hydrodynamic lubrication could also be proved under laboratory conditions. The clinical introduction is expected to offer a significant extension of durability in this prosthetic system and needs to be proved in a long-term study.

  13. Bionic Design of Fertilizer Sampling Robot%复合肥取样机器人仿生设计

    Institute of Scientific and Technical Information of China (English)

    唐启敬; 赵铁石; 边辉; 耿明超

    2011-01-01

    针对复合肥生产的高粉尘强腐蚀环境,设计了一种能够替代人工作业的取样机器人.分析使用需求,提出具有抗冲击、耐腐蚀、自清洁、传动机构内置、驱动远离末端执行件安装等特征的取样机器人设计原则.从仿生学角度出发,通过对螃蟹运动关节结构特征研究,提出取样机器人构型,进行了功能仿生和结构仿生设计.根据其使用工况,设计了取样机器人运动过程和控制方案.通过机构参数优化、仿真和冲击试验,验证了其可行性.%In order to release the fertilizer production workers working in high dust and strong corrosive environment for a long time, a sampling robot was designed. By analyzing the using demand, robot' s designing principles including characteristics of impact resistance, corrosion resistance, cleaning by itself, transmission mechanism built-in and drive away from the end piece installed was proposed. From the angle of bionics, the crab joints' structure characteristic was researched. Then sampling robot configuration was proposed. Bionics function and structure was designed. According to its operation condition, motion process and control plan was designed. After the parametric optimization, its feasibility was validated by simulation and impact test.

  14. 截肢者日常生活用假手的仿生设计方法%Bionics Design of Artificial Hands for Amputees

    Institute of Scientific and Technical Information of China (English)

    王人成; 王爱明; 刘启栋

    2011-01-01

    This paper discusses the bionics design methods of artificial hands for amputees from aspects of appearance and material, function and structure, control and operation methods. Putting forward some cases of artificial hand with unidirection and multi-degree of freedom, the factors of artificial hands bionics design are analyzed.%本文从外观式样与材料、功能与结构,以及控制与操纵方式三个角度讨论了截肢者日常生活用假手的仿生设计方法.通过对单自由度和多指多自由度典型假手实例进行分析,分析了假手仿生设计需要重点考虑的几个因素.

  15. 仿生学设计引领的新型环保建筑%On new environmental-friendly building led by bionic design

    Institute of Scientific and Technical Information of China (English)

    赵尊健; 陈晨; 贺喜格图

    2015-01-01

    主要介绍了由仿生学设计引领的新型环保建筑的设计,通过文献查阅,结合基础知识提出了关于绿色环保建筑的构想,并探讨了建筑仿生学的优势与发展前景,以推动建筑科学的不断发展。%The paper mainly introduces the new environment-friendly design led by bionics design,points out its green environment-friendly buildings according to the literature and basic knowledge,and explores the advantages and development prospect of the building bionics,so as to enhance the increasing development of architectural science.

  16. Structure Design of Bionic Gecko's toe and the Adhesive Locomotion Performance Test%仿壁虎脚趾结构设计及粘附运动性能测试

    Institute of Scientific and Technical Information of China (English)

    俞志伟; 李宏凯; 张晓峰; 张昊; 戴振东

    2011-01-01

    壁虎具有在各种表面(如地面、墙面、天花板)上运动的超凡能力.根据大壁虎的脚趾结构及其粘附方式,模拟大壁虎脚趾,设计具有微小粘性褶皱和柔性悬臂结构的仿壁虎脚趾.用多用途摩擦粘附性能试验台,测定仿壁虎脚趾的粘附性能,即仿壁虎脚趾最大拉伸粘附力大小与粘附次数、拉伸角度、粘附轨迹等参数的关系.试验表明模拟壁虎脚趾研制的新型粘附脚趾具有和生物壁虎脚趾相近的粘附力学特性.将此脚趾用于仿壁虎机器人,成功地实现了仿壁虎机器人的90°爬壁.%Gecko has a superb locomotive capacity on variety surface, such as the ground, walls, ceilings and other complex environment in space. By analyzing the locomotion of gecko's toe adhesion structure and adhesion methods, bionic gecko's toe is designed which has several minimal adhering folds with flexible cantilever structure. By using multipurpose friction force experimental platform, the adhesion performance of bionic gecko's toe is analyzed, including the changing of the maximum tensile adhesion force of bionic gecko's toe with the adhesion numbers, the different stretching angles, different adhesion trajectories, and so on. The experiment shows that bionic gecko'toe has similar adhesion force performance with gecko's toe. When the bionic gecko's toe is designed for bionic gecko robot foot, the bionic gecko robot successfully achieves 90 degree wall-climbing movement.

  17. 仿生扑翼UUV流体动力数值计算%Numerical Calculation of Bionic Flapping Wing UUV's Hydrodynamics

    Institute of Scientific and Technical Information of China (English)

    张鹏; 宋保维; 杜晓旭

    2013-01-01

    仿生扑翼推进方式具有机动灵活、推进噪声低、稳定性好等特点,但由于外形的复杂性,仿生扑翼UUV的流体动力具有很强的非线性,给流体动力特性的研究带来难度.为了研究仿生扑翼的非线性流体动力特性,基于雷诺平均Navier-Stokes方程,采用RNG k-ε模型,建立了仿生扑翼UUV的流体动力计算数学模型,并利用ICEM CFD划分了网格,基于标准CFD软件Fluent对UUV的流体动力特性进行了仿真计算.结果表明,仿生扑翼UUV的流体动力在小攻角下呈线性变化,大攻角下出现非线性特征.%The bionic flapping wing has some advantages, such as agile maneuverability, low noise and high stability. But the hydrodynamics characteristic of the bionic flapping wing unmanned underwater vehicle (UUV) is nonlinear because of the complicated shape, so the research the hydrodynamics characteristic of the bionic flapping wing UUV is difficult. In this paper, to study the hydrodynamics characteristic of the bionic flapping wing UUV, the hydrodynamics calculation model was built based on the Reynolds average Navier-Stokes equation. And the meshes were divided by ICEM CFD. Than the hydrodynamics of the flapping wing UUV was simulated by Fluent. The results show that the hydrodynamics of the UUV shows linear characteristic when the angle of attack is small, but nonlinear characteristic when the angle of attack is big.

  18. Design and Implementation of Bionic Pectoral Fin of Labriform%咽颌模式仿生胸鳍的设计与实现

    Institute of Scientific and Technical Information of China (English)

    刘强; 龚成龙; 纪志成

    2013-01-01

    在深入分析咽颌运动模式鱼类胸鳍的肌肉和骨骼结构以及神经肌肉控制机理的基础上,采用欠驱动技术设计了一套新型的胸鳍仿生机构,介绍了此仿生机构各部分的结构、功能及参数.然后,为此胸鳍仿生机构设计了一套基于CAN总线的分布式实时测控系统,并详细分析了其软硬件的结构和功能.最后,建立了胸鳍仿生系统的样机,并通过试验验证了本文建立的胸鳍仿生系统在模拟鱼类胸鳍推进运动方面的可行性和有效性.%Based on the analysis of the muscle and skeleton structure as well as the neuromuscular control mechanism of labriform pectoral fin,a new under-actuated bionic pectoral fin is designed,and the structure,function and parameters of this bionic pectoral fin are described.Then,a distributed real-time measurement and control system is designed for this device based on CAN (controller area network) bus.Meanwhile,the structure and function of hardware and software of this system are analyzed in detail.At last,a prototype of bionic system of pectoral fin is manufactured,and the feasibility and validity of this new bionic system of pectoral fin are proven by experiment in simulating the propulsion motion of real pectoral fin.

  19. 谈中国古典园林中的仿生设计%Discussion on bionic design of Chinese classical gardens

    Institute of Scientific and Technical Information of China (English)

    陈奕静; 许先升

    2012-01-01

    透过意识形态对仿生文化的影响,论述了在园林中全面渗透的、源于自然的仿生元素,分析仿生手法在园林山、水、建筑小品以及空间布局的应用,最后提出中国古典园林中丰富的、具有深厚文化底蕴的仿生语言值得我们继承和发扬。%Through the influence of ideology to bionic culture, this paper discussed the natural elements of full penetration, derived from nature in the garden, analysed the application of bionic technique in garden hill, water, architecture opuscule and space layout, finally put forward the bionic language of rich, had a profound cultural background in Chinese classical gardens worthy of inheriting and earring forward.

  20. Construction of a three-dimensional bionic nerve conduit containing two neurotrophic factors with separate delivery systems for the repair of sciatic nerve defects

    Institute of Scientific and Technical Information of China (English)

    Zhiyue Li; Qun Zhao; Ran Bi; Yong Zhuang; Siyin Feng

    2011-01-01

    Previous studies of nerve conduits have investigated numerous properties, such as conduit luminal structure and neurotrophic factor incorporation, for the regeneration of nerve defects. The present study used a poly(lactic-co-glycolic acid) (PLGA) copolymer to construct a three-dimensional (3D) bionic nerve conduit, with two channels and multiple microtubule lumens, and incorporating two neurotrophic factors, each with their own delivery system, as a novel environment for peripheral nerve regeneration. The efficacy of this conduit in repairing a 1.5 cm sciatic nerve defect was compared with PLGA-alone and PLGA-microfilament conduits, and autologous nerve transplantation. Results showed that compared with the other groups, the 3D bionic nerve conduit had the fastest nerve conduction velocity, largest electromyogram amplitude, and shortest electromyogram latency. In addition, the nerve fiber density, myelin sheath thickness and axon diameter were significantly increased, and the recovery rate of the triceps surae muscle wet weight was lowest. These findings suggest that 3D bionic nerve conduits can provide a suitable microenvironment for peripheral nerve regeneration to efficiently repair sciatic nerve defects.

  1. Bionic crab walking mechanism and its kinematic characteristics analysis%仿螃蟹步行机构及其通过性试验

    Institute of Scientific and Technical Information of China (English)

    李建桥; 张广权; 王颖; 吴宝广; 黄晗; 薛龙

    2016-01-01

    仿生步行机构的研究对于复杂地形的行走机构开发具有十分重要的意义。为了设计出性能优越、结构简单的仿生步行机构,通过分析中华绒螯蟹的行走步态,提出了仿螃蟹步行机构的设计方案。由于螃蟹尾端的两只步足较少参与行走,为简化设计,将步行机构设计成6足式,腿部运动由六连杆机构实现。利用三维建模软件 CATIA 建立了步行机构整体模型,并在 ADAMS 中完成了运动学分析,得到步行机构足端运动轨迹,结果表明该步行机构能够完成预期的动作。根据设计加工出样机,在非常规地面上与轮式模型车进行通过性对比试验,结果表明仿螃蟹步行机构在农业生产所涉及的松软地面上具有较高的通过性能,在崎岖硬地面上波动比轮式模型车降低5%~75%。该步行机构还可作为试验平台,通过对其腿部杆件尺寸和足端触地方式的优化,为开展提高步行机构在不同地面通过性提供基础研究设备条件。%The research of bionic walking mechanism is of great significance for the development of walking mechanism on complex terrain. In order to design a bionic walking mechanism with superior performance and simple structure, by analyzing the walking gait of Eriocheir sinensis Milne-Edwards, the design scheme of the crab walking mechanism was proposed. Due to 2 feet at the end of the crab less involved in walking, in order to simplify the structure, the walking mechanism was designed to have 6 feet, and leg movement was achieved by the six-link mechanism. The whole model of the walking mechanism was established by the three-dimensional (3D) modeling software CATIA, and the kinematics analysis was finished in ADAMS. The results showed that the walking mechanism could complete the expected action. Based on the design, bionic walking mechanism prototype was produced, and walking test of bionic walking mechanism on the smooth hard

  2. Wastes disposal on board a ship. Apparatus to decompose and annihilate wet refuses bionically; Senjo no haikibutsu shori. Namagomi no bio bunkai shometsuki

    Energy Technology Data Exchange (ETDEWEB)

    Takenaka, S.

    1996-07-25

    A bionic refuse disposing and annihilating apparatus for wet refuses produced on board a ship was developed, and introduced in this paper. This apparatus uses a system that biomass as a decomposing medium is maintained dry in a disposal tank, and wet refuses are decomposed and annihilated by the biomass working only with water contained in the wet refuses themselves. The system uses a decomposing medium composed of a mixture of different kinds of organic matters mixed with various nutrients, and automatically controls absorption and exhalation of decomposing water without using a heater. Almost all of wet refuses decomposes and annihilates in twelve hours after having been charged in their original forms. The decomposing medium can be used continuously for six months to a year. Because of complete annihilation by the bionic effect, no residue is created. This system uses a normal-temperature decomposing and annihilating bionic technology, whose minimum temperature required for decomposition and annihilation is 10{degree}C or higher, and the highest permissible temperature is 75{degree}C. Dry and cool environment at about 20{degree}C is most suitable. Deodorizing function of the biomass itself as the decomposing medium suppresses odor generation. 3 figs.

  3. Research on the Feature Extraction of Bionic Color for Product-oriented Design%面向产品设计领域的色彩仿生特征提取探析

    Institute of Scientific and Technical Information of China (English)

    侯晓鹏; 杨保华

    2011-01-01

    According to the product design program and the color of natural biological characteristics,it summed up in two different forms for the process of bionic color design.For the feature extraction of biological prototype color,it summarized the four design principles,namely: main color optimization,the secondary colors appropriate to ignore: the color space configured bionic;the whole color bionics shared with the part color bionics;color feedback capabilities of bionic.Through the application of these design principles,it will provide a wider gamut color space for the product color design.%从产品设计程序出发,以自然生物色彩的特点为启示,总结出2种不同形式的仿生色彩设计流程。针对生物原型色彩特征的提取,归纳出4种设计原则,即:主体色优选,辅助色适当忽略:色彩面积配置仿生;整体色彩仿生与局部色彩仿生并用;色彩反馈功能仿生。通过这些设计原则的应用,将为产品色彩设计领域开拓更广阔的色域空间。

  4. 挖掘机仿生斗齿土壤切削试验与减阻机理研究%Experiment and Drag Reduction Mechanism of Bionic Excavator Tooth during Soil Cutting

    Institute of Scientific and Technical Information of China (English)

    张琰; 黄河; 任露泉

    2013-01-01

    模仿蝼蛄爪趾形态设计了挖掘机斗齿.使用多项式拟合方法对爪趾的侧面轮廓线进行拟合,利用快速成型设备制造仿生斗齿样件.通过土壤切削试验,测定了仿生斗齿和JL80斗齿试样的土壤切削阻力.试验结果显示,仿生斗齿切削时受到的土壤阻力较原形斗齿降低约11%.分析表明,仿生斗齿易形成“自刃尖”,保持斗齿整体切削性能,且可在不改变挖掘机设计与工况的条件下,减小切削角,实现减阻.%A bionic excavator tooth was developed, which is bio-inspired and based on the morphology of the toe of mole cricket foreleg claw. The profile line of the mole cricket's toe was fitted by using polynomial fitting method. The bionic tooth specimens were fabricated by a rapid prototyping machine. The cutting resistances of the bionic tooth and JL80 tooth specimens were measured during soil cutting. The experimental results show that the cutting resistances of bionic tooth is about 11 % lower than that of JL80 tooth. The force analysis indicates that the bionic tooth is more likely to form self-sharpening blade so that the cutting performance of the tooth can be maintained. Besides, the bionic tooth is convenient for reducing the cutting angle, which can help for the reduction of cutting resistance, without changing the design and working condition of the excavator.

  5. Intelligent PID controller based on ant system algorithm and fuzzy inference and its application to bionic artificial leg

    Institute of Scientific and Technical Information of China (English)

    谭冠政; 曾庆冬; 李文斌

    2004-01-01

    A designing method of intelligent proportional-integral-derivative(PID) controllers was proposed based on the ant system algorithm and fuzzy inference. This kind of controller is called Fuzzy-ant system PID controller. It consists of an off-line part and an on-line part. In the off-line part, for a given control system with a PID controller,by taking the overshoot, setting time and steady-state error of the system unit step response as the performance indexes and by using the ant system algorithm, a group of optimal PID parameters K*p , Ti* and T*d can be obtained, which are used as the initial values for the on-line tuning of PID parameters. In the on-line part, based on Kp* , Ti*and Td* and according to the current system error e and its time derivative, a specific program is written, which is used to optimize and adjust the PID parameters on-line through a fuzzy inference mechanism to ensure that the system response has optimal transient and steady-state performance. This kind of intelligent PID controller can be used to control the motor of the intelligent bionic artificial leg designed by the authors. The result of computer simulation experiment shows that the controller has less overshoot and shorter setting time.

  6. Influence of Orientations of Bionic Unit Fabricated by Laser Remelting on Fatigue Wear Resistance of Gray Cast Iron

    Science.gov (United States)

    Chen, Zhi-Kai; Zhou, Ti; Zhang, Hai-feng; Yang, Wan-shi; Zhou, Hong

    2015-06-01

    Fatigue wear resistance improvements were researched by studying experimental samples with gray cast iron fabricated with bionic units in different orientations. Experimental samples were modified by laser surface remelting, including parallel, vertical, and gradient units to the wear direction. The remelting pool was then studied to determine the micro-hardness, microstructure, alteration of phase, and etc. Lab-control fatigue wear test method was applied with the treated and untreated samples tested under the laboratorial conditions. Wear resistance result was considered as the rolling contact fatigue (RCF) resistance and mechanisms of the modified samples were experimentally investigated and discussed. Results suggested that all treated samples demonstrated the beneficial effect on the RCF improvement due to lack of graphite and reinforcement of treated region. Results also indicated the sample with fastigiated units was more effective than that with vertical units or parallel units to the wear direction. Influence of the sample unit's angle which intensely depended on the conditions of actual application, however, was not identified.

  7. Glucose as fuel for chemo-electric drives - bionic aspects; Glucose als Treibstoff fuer chemoelektrische Antriebe - bionische Aspekte

    Energy Technology Data Exchange (ETDEWEB)

    Radebold, R. [RADEBOLD Ingenieurbuero, Berlin (Germany)

    2003-07-01

    Installation of a bionic energy system requires three aspects: 1. Technical implementation of the principles of air-breathing, glucose-uptaking chemoelectric converters of the biological energy system; 2. step-by-step replacement of today's technical energy system by chemoelectric converters for similar energy services; 3. Production of glucose from biomass, distribution and use as renewable hydrogen transmitter in aqueous solution. The author's company works on these tasks. Priority is given to the first-mentioned task but the others are considered as well. Results and the state of the art are reported. (orig.) [German] Fuer die Installation eines bionischen Energiesystems sind drei Aufgaben zu erfuellen: 1. Uebertragung der Prinzipien von Bau und Betrieb der luftatmenden, glucose-tankenden chemoelektrischen Wandler des biologischen Energiesystems in die Technik, 2. schrittweiser Ersatz des heutigen technischen Energiesystems durch chemoelektrische Wandler bei gleichen Energiedienstleistungen. 3. Gewinnung von Glucose aus Biomasse, Verteilung und Einsatz als nachwachsendem Wasserstoffuebertraeger in waessriger Loesung als Treibstoff der Wandler. Wir haben uns dieser Herausforderung gestellt und arbeiten seit einigen Jahren an den obigen Aufgaben. Oberste Prioritaet hat die erste Aufgabe, aber auch die beiden anderen Aufgaben finden die notwendige Aufmerk-samkeit. Wir berichten im Folgenden ueber unsere Ergebnisse sowie ueber den Stand der Technik. (orig.)

  8. 提升轮胎抗滑水性能的仿生方法%Bionic Method for Improving Tire Anti-hydroplaning Performance

    Institute of Scientific and Technical Information of China (English)

    周海超; 梁晨; 杨建; 王国林; 薛开鑫

    2015-01-01

    提高花纹沟排水能力是提升轮胎抗滑水性能的主要途径之一,借鉴仿生学理念,将凹坑形仿生非光滑结构引入花纹沟,探索研究通过降低花纹沟流体阻力提高花纹沟排水能力的仿生方法。以轮胎接地区单个花纹沟作为研究对象,在沟底布置凹坑形仿生非光滑结构,运用计算流体动力学(Computational fluid dynamics,CFD)和正交试验设计相结合的方法,研究凹坑形仿生非光滑结构对壁面减阻率的影响规律,确定最优参数组合;为进一步提升凹坑形仿生非光滑结构的减阻率,提出一种水滴形凹坑仿生结构,并对其减阻特性进行分析,得出其减阻效果优于圆形凹坑结构;将最优的水滴形凹坑仿生结构布置于花纹沟底部,分析其抗滑水性能。结果表明,水滴形凹坑仿生结构能够减小水流阻力,提高轮胎花纹沟排水量,降低轮胎在水膜上行驶时所受到的胎面动水压力,提升轮胎的抗滑水性能。%Enhancing the groove dralnage ability is one of the maln ways to improve the tire anti-hydroplaning performance. Inspired by the bionic theory, the pit bionic non-smooth structure is introduced into tire groove and bionic method for enhance groove dralnage ability by reducing fluid resistance is explored. The single tire groove of contact area is extracted for analysis and the pit bionic non-smooth structure is arranged on the bottom of tire groove. The computational fluid dynamics(CFD) and orthogonal experimental design are used to study the influence of pit bionic non-smooth structure on wall drag reduction, and the optimal parameters combination is determined. To further enhance the drag reduction rate of pit bionic non-smooth structure, a water drop shaped pit boinic structure is proposed and its drag reduction characteristic is analyzed. The results show the drag reduction effect of the water drop shaped pit boinic structure is better than

  9. Design of Bionic Knee Joint Mechanism Based on Hybrid Actuation%基于混合驱动仿生膝关节机构设计

    Institute of Scientific and Technical Information of China (English)

    吴成东; 金基准; 闻时光; 王斐; 齐亚鲁

    2012-01-01

    目的 针对传统假肢关节机构与驱动系统的不足,设计并实现由磁流变阻尼器结合直流电机混合驱动,滚珠丝杠传动的多轴闭链仿生膝关节.方法 通过多变量优化设计方法求解出膝关节机构参数、滚珠丝杠安装位置参数和电机的角速度及扭矩.基于虚拟样机技术构建了智能仿生腿的仿真平台并在其上进行了运动学仿真.结果 仿生膝关节与人腿膝关节运动曲线接近,结合电机驱动可实现更大范围的步速调整.结论 该优化方法得到的系统参数可使膝关节机构具有很高的仿生特性及良好的运动特性.%Corresponding to the deficiency of joint structure and actuation system for traditional prosthesis, multi-axis closed-chain bionic knee joint that is actuated by MR damper augmenting with DC motor and transmitted by ball screw is designed and implemented. By employing multi-variables optimization method, mechanism parameters of knee joint,installation position parameters of ball screw and angular velocity and torque of DC motor can be obtained. The simulation platform of intelligent bionic leg is then constructed by using virtual prototype technology and kinematics simulation is conducted. The movement curves of bionic knee joint are similar with that of human subjects. The mechanism can realize wider adjustment range of gait velocity by combining with DC motor actuation. Experimental results indicate that it can achieve high bionic characters and good motion performance for knee joint mechanism with the optimal parameters calculated by the proposed scheme.

  10. Design of hyper-field zoom bionic eye optical system%超大视场变焦仿生眼光学系统设计

    Institute of Scientific and Technical Information of China (English)

    程洪涛; 吴勇翀; 吕杰; 张培茗; 郭世俊; 李恒宇

    2016-01-01

    提出了一种新的基于仿生鱼眼镜头模型的超大视场变焦仿生眼光学系统。该仿生眼应用可调光焦度器件能使光学系统更紧凑和不需要移动。鉴于鱼眼系统可以简化成反远物镜的原理,利用矩阵理论和变焦准则,研究了基于可调光焦度器件鱼眼镜头设计的一阶几何光学理论,得到了鱼眼系统前组和后组的光焦度控制方程;进一步讨论了其光焦度的边界方程;最后提供的仿生变焦鱼眼的视场角最大为164°,焦距从5~15 mm变化,成像质量达到系统要求。设计实例为其在智能监控、航天军工、机器人系统等领域的应用提供了有益的探索。%A new hyper-field zoom bionic eye optical system based on the model of bionic fisheye was presented. The variable focal power lens was employed to design the bionic eye with zoom system more compact and no move lens. The fisheye lens is a kind of retro-focus lens system. Fisheye zoom first-order geometric optics theory based on matrix theory and zoom principle were established. The former group and the latter group focusing optical power equation were deduced. Furthermore, the boundary equation of optical power in the zoom system was discussed. Finally, the bionic fisheye field can be acquire to 164o. The focal lengths was from 5 mm to 15 mm. The design example can be applied in intelligent control, aerospace industry, robotics systems which provide a useful exploration.

  11. 海洋仿生食品的综合生产加工%The comprehensive production and processing of marine bionic food

    Institute of Scientific and Technical Information of China (English)

    孙晓莲

    2013-01-01

      对国内外海洋仿生食品的生产加工及消费进行了论述,主要对模拟蟹肉、鱼丸、鱼豆腐、腰花肠、包心鱼丸等海洋仿生食品的生产加工进行了详细介绍。%The comprehensive production, processing and consume of marine bionic food at home and abroad were re-viewed in this paper. The imitation crab meat, fish balls, fish tofu, fish sausages, and stuffed fish balls were introduced in detail.

  12. Technologies for Bionic Simulation of Osteocyte Microenvironment%骨细胞微环境仿生模拟技术

    Institute of Scientific and Technical Information of China (English)

    任丽; 续惠云; 骞爱荣; 商澎

    2014-01-01

    mechanical stimulations.The microenvironment surrounding osteocyte is therefore of crucial importance to both elucidating the mechanism of mechanical perception and discovery of new biological functions.However,the complicated lacuna-canalicular network surrounded by rigid bone matrix makes the study of osteocyte in vivo technically difficult.It can be of great significance to reconstruct bionic microenvironment in vitro for further revealing the functions of osteocyte.The systematic introduction of structural,biochemical and mechanical microenvironment surrounding osteocyte was presented here,and the recent technologies for simulation of bionic microenvironment in vitro were also reviewed.This review will provide a useful reference for researchers who are interested in osteology,tissue engineering and regenerative medicine.

  13. An insect-inspired bionic sensor for tactile localisation and material classification with state-dependent modulation

    Directory of Open Access Journals (Sweden)

    Luca ePatanè

    2012-08-01

    Full Text Available Insects carry a pair of antennae on their head: multimodal sensory organs that serve a wide range of sensory-guided behaviours. During locomotion, antennae are involved in near-range orientation, for example in detecting, localising, probing and negotiating obstacles.Here we present a bionic, active tactile sensing system inspired by insect antennae. It comprises an actuated elastic rod equipped with a terminal acceleration sensor. The measurement principle is based on the analysis of damped harmonic oscillations registered upon contact with an object. The dominant frequency of the oscillation is extracted to determine the distance of the contact point along the probe, and basal angular encoders allow tactile localisation in a polar coordinate system. Finally, the damping behaviour of the registered signal is exploited to determine the most likely material.The tactile sensor is tested in four approaches with increasing neural plausibility: First, we show that peak extraction from the Fourier spectrum is sufficient for tactile localisation with position errors below 1%. Also, the damping property of the extracted frequency is used for material classification. Second, we show that the Fourier spectrum can be analysed by an Artificial Neural Network which can be trained to decode contact distance and to classify contact materials. Thirdly, we show how efficiency can be improved by band-pass filtering the Fourier spectrum by application of non-negative matrix factorisation. This reduces the input dimension by 95% while reducing classification performance by 8% only. Finally, we replace the FFT by an array of spiking neurons with gradually differing resonance properties, such that their spike rate is a function of the input frequency. We show that this network can be applied to detect tactile contact events of a wheeled robot, and how detrimental effects of robot velocity on antennal dynamics can be suppressed by state-dependent modulation of the

  14. 同步仿生机械臂设计%The Design of Synchronization Bionic Robot Arm

    Institute of Scientific and Technical Information of China (English)

    云彩霞; 李珊; 宋晓华; 李昆

    2014-01-01

    本设计利用安装在人手臂部的加速度传感器采集运动信号,单片机智能运算后发出控制指令,实现机械臂与人臂的同步运动。系统将在采集传感器的输出模拟量经过单片机的处理产生PWM波,使用PWM波驱动舵机实现准确定位,使机械臂实现三自由度的运动。而且还可通过编程和仿生来完成各种预期的作业任务,在构造和性能上兼有人和机器各自的优点,体现了人的智能和适应性。%This design uses the collected motion signal of the acceleration sensor installed in the arm department,issued in the single-chip smart computing control commands,synchronous movement of the manipulator arm.Acquisition sensor output analog processing After the microcontroller PWM wave using PWM wave-driven steering gear to achieve accurate positioning,so that the robotic arm to achieve three degrees of freedom of movement.But also through programming and bionic complete a variety of expected operating tasks,both in structure and performance of the respective advantages of both humans and machines,human intelligence and adaptability.

  15. Restoration of vision in blind individuals using bionic devices: a review with a focus on cortical visual prostheses.

    Science.gov (United States)

    Lewis, Philip M; Ackland, Helen M; Lowery, Arthur J; Rosenfeld, Jeffrey V

    2015-01-21

    The field of neurobionics offers hope to patients with sensory and motor impairment. Blindness is a common cause of major sensory loss, with an estimated 39 million people worldwide suffering from total blindness in 2010. Potential treatment options include bionic devices employing electrical stimulation of the visual pathways. Retinal stimulation can restore limited visual perception to patients with retinitis pigmentosa, however loss of retinal ganglion cells precludes this approach. The optic nerve, lateral geniculate nucleus and visual cortex provide alternative stimulation targets, with several research groups actively pursuing a cortically-based device capable of driving several hundred stimulating electrodes. While great progress has been made since the earliest works of Brindley and Dobelle in the 1960s and 1970s, significant clinical, surgical, psychophysical, neurophysiological, and engineering challenges remain to be overcome before a commercially-available cortical implant will be realized. Selection of candidate implant recipients will require assessment of their general, psychological and mental health, and likely responses to visual cortex stimulation. Implant functionality, longevity and safety may be enhanced by careful electrode insertion, optimization of electrical stimulation parameters and modification of immune responses to minimize or prevent the host response to the implanted electrodes. Psychophysical assessment will include mapping the positions of potentially several hundred phosphenes, which may require repetition if electrode performance deteriorates over time. Therefore, techniques for rapid psychophysical assessment are required, as are methods for objectively assessing the quality of life improvements obtained from the implant. These measures must take into account individual differences in image processing, phosphene distribution and rehabilitation programs that may be required to optimize implant functionality. In this review, we

  16. DISCUSSION BASED ON THE RATIONALITY OF THE APPLICATION IN MECHANIC BIONICS%基于结构仿生应用合理性的探讨

    Institute of Scientific and Technical Information of China (English)

    钱欢欢; 吴晓涵

    2011-01-01

    The paper firstly clarifies the concept of mechanic bionics, and points out that there is irrationality in the choice and appliance of the natural model Then several engineering examples are studied for further analysis, which include Sydney Opera House, Sendai Media centre in Japan, the National Stadium and the BCE Business street Eventually, the paper brings forward some suggestions and a prospect is given to the development of mechanic bionics.%首先阐述了结构仿生的概念,指出结构仿生中自然模型选择与应用上的不合理性,通过对悉尼歌剧院、日本仙台媒体中心、国家游泳中心和BCE商业街个例的深入分析,最后提出若干点建议并对仿生学在建筑结构领域的发展前景进行了展望.

  17. Underwater detection and obstacle avoidance of bionic machine fish%仿生机器鱼的水下探测和避障控制

    Institute of Scientific and Technical Information of China (English)

    王坤; 冯静安; 王卫兵

    2013-01-01

    文章提出了一种集成多红外测距传感器、GPS定位器、CMOS摄像头的仿生机器鱼,建立了仿生机器鱼传感器网络,设计了机器鱼的机构组成和技术参数,制定了一种仿生机器鱼游动规则库和控制方法,定义了10种机器鱼基本运动形式和几种转弯模式,使其在设定的游动规则中自主游动,主动避障,探测水下情况,实验验证了其有效性。%A bionic machine fish integrating infrared distance sensors ,GPS locator ,CMOS cameras is put forward .Robotic fish sensor network is established and the composition of the fish and the tech-nological parameters are set .A kind of swimming rule base and control method of the bionic machine fish is developed ,and ten kinds of basic movement forms and several turning modes of the fish are de-fined ,which makes the fish automatically swim ,actively avoid obstacle ,and detect underwater situa-tion by the defined swimming rules .The validity is verified by the experiments .

  18. Study of the Bionic Design of Bird Flapping Wing Mechanism%机器鸟扑翼仿生机构研究

    Institute of Scientific and Technical Information of China (English)

    王旭光; 崔建昆; 范建华

    2013-01-01

    通过对鸟类翅膀的生理结构和运动特征的分析,分别从扑翼鸟的翅膀骨骼机构和飞行中翅膀运动规律两个仿生学角度设计了鸟类翅膀的驱动平面机构.并利用机构设计软件SAM6.0对其进行了运动学的仿真,仿真效果优异,从而为仿生大型鸟类机体设计提供了参考.%The drive plane mechanism of the birds wing is designed respectively from two bionic perspectives of bone institutions of the bird wing and the motion law of the flapping wing. The simulation effect is excellent on the kinematics simulation by the mechanical design software SAM6.0. The reference for design the body of large bionic flapping wing mechanism in our country is provided.

  19. Study on Architecture of Bionic Spider Robot%仿生蜘蛛型机器人体系结构研究

    Institute of Scientific and Technical Information of China (English)

    谢志浩; 柯文德

    2015-01-01

    分析了六足仿生蜘蛛机器人的体系结构特点,设计了基于无线PS2手柄控制的六足仿生机器人多路舵机控制结构,采用32路舵机控制板、高扭矩舵机MG995实现了关节运动控制,基于控制板上位机开发运动步态实现了机器人一个步态周期内的直线行走、定点转弯运动。实验验证了设计的有效性。%The architecture of bionic spider robot is analyzed .The multi-servo controller for bionic spider robot with 6 legs based on infra-red PS2 handle is designed .The controlling board for 32 servos and the high torque MG995 servo are used to realize the joint movement . The upper computer is used to develop movement gaits as well ,which realizes the straight movement and movement of turning around on fixed point .The experiment proves the validity of method .

  20. Born–Infeld extension of Lovelock brane gravity in the system of M0-branes and its application for the emergence of Pauli exclusion principle in BIonic superconductors

    Energy Technology Data Exchange (ETDEWEB)

    Sepehri, Alireza, E-mail: alireza.sepehri@uk.ac.ir [Faculty of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of); Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), P.O. Box 55134-441, Maragha (Iran, Islamic Republic of)

    2016-07-01

    Recently, some authors (Cruz and Rojas, 2013 [1]) have constructed a Born–Infeld type action which may be written in terms of the Lovelock brane Lagrangians for a given dimension p. We reconsider their model in M-theory and study the process of birth and growth of nonlinear spinor and bosonic gravity during the construction of Mp-branes. Then, by application of this idea to BIonic system, we construct a BIonic superconductor in the background of nonlinear gravity. In this model, first, M0-branes link to each other and build an M5-brane and an anti-M5-brane connected by an M2-brane. M0-branes are zero dimensional objects that only scalars are attached to them. By constructing higher dimensional branes from M0-branes, gauge fields are produced. Also, if M0-branes don't link to each other completely, the symmetry of system is broken and fermions are created. The curvature produced by fermions has the opposite sign the curvature produced by gauge fields. Fermions on M5-branes and M2 plays the role of bridge between them. By passing time, M2 dissolves in M5's and nonlinear bosonic and spinor gravities are produced. By closing M5-branes towards each other, coupling of two identical fermions on two branes to each other causes that the square mass of their system becomes negative and some tachyonic states are created. For removing these tachyons, M5-branes compact, the sign of gravity between branes reverses, anti-gravity is produced which causes that branes and identical fermions get away from each other. This is the reason for the emergence of Pauli exclusion principle in Bionic system. Also, the spinor gravity vanishes and its energy builds a new M2 between M5-branes. We obtain the resistivity in this system and find that its value decreases by closing M5 branes to each other and shrinks to zero at colliding point of branes. This idea has different applications. For example, in cosmology, universes are located on M5-branes and M2-brane has the role of bridge

  1. Physiological and Ecological Theory and Technical Approach of Bionic Wild Production——A Case of Bionic Wild Production of Walnut in Tibetan Mountain%仿野生生产方式的生理生态学原理与技术途径——以西藏山地核桃仿野生栽培为例

    Institute of Scientific and Technical Information of China (English)

    关法春; 兰小中

    2012-01-01

    According to the practical demand of harmonious development between the ecological environment protection and genuine agricultural products, bionic wild production was propounded, including its conception, theoretical constitution and technical approach. Based on the organic combination between the inner constituents in system and environment, bionic wild production became a new advanced ecological agro-ecosystem, which is based upon the maintenance of the eco-system balance and biodiversity protection, and whose products accord with the needs of industrialization development in genuineness. Bionic wild production comprises the theory of physiology, ecology, compensation effect, agro-climatology, which its realistic technical approach was propounded, in order to promote the development of ecological agriculture.%针对生态环境保护和道地农产品生产协调发展的现实需求,提出仿野生生产方式的概念、理论构成和技术途径.仿野生生产方式强调系统内各组分与环境之间的有机组合,从而形成新的高级生态农业系统,其在维持生态系统平衡和生物多样性保护的基础上,生产出的产品在道地性上符合产业化发展的需要;仿野生生产方式从生理学理论、生态学理论、补偿效应原理、农业气候学理论等方面出发构建其理论基础,并基于理论形成具体的技术途径,以期推动生态农业理论的发展.

  2. Study on bionic flexible workflow modeling and adaptation algorithm%仿生柔性工作流建模与适应算法研究

    Institute of Scientific and Technical Information of China (English)

    王颖慧; 王东勃; 王增磊; 刘志忠

    2011-01-01

    为提高柔性工作流对外界动态变化的响应速度,将生物的反射机理引入柔性工作流,构建了柔性工作流神经网络系统.模仿生物响应外界刺激的反射机理,利用人工神经网络技术,在柔性工作流中建立了仿生柔性工作流模型,定义了该模型中的人工神经网络概念模型,并以该模型为基础,提出了柔性工作流适应算法框架.最后,以企业生产计划节点工时定额的制定为例,构建了处理元群为BP网络的仿生柔性工作流模型,对柔性工作流适应算法进行仿真.仿真结果显示,建立的模型能够根据参数的动态变化作出正确的响应,从而证明仿生柔性工作流适应算法能够智能响应外界动态变化.%To improve the responding speed of the flexible workflow to the external dynamic changes, introduced the biological mechanism of reflection into the flexible workflow, builded the neural network system in the flexible workflow. By using of the biological mechanism of reflection to the stimulus, created the bionic flexible workflow model and defined the concept model of artificial neural network in a flexible workflow with artificial neural network technology, then, proposed a framework of flexible workflow adaptation algorithm based on the above model. Finally, with an example of working hour quota set in the enterprise production planning node, simulated the flexible workflow adaptation algorithm based on the bionic flexible workflow model which the type of the processing neural group was BP model. Simulation results show that the established model can make correct response to the dynamic changes according to the parameters, thus proving the adaptation algorithm of bionic flexible workflow can respond to outside dynamic change intelligently.

  3. 一种仿生机械臂空间位置反馈方法的研究%Position Feedback of Bionic Manipulator Following Electrooculography Signals

    Institute of Scientific and Technical Information of China (English)

    贺巧玲; 张进华; 李婷; 洪军

    2012-01-01

    To solve bionic manipulator space position feedback, electrooculography (EOG) is used as the neurofeedback in the system. The mapping rules between the eye rotation angle and the corresponding EOG are analyzed by the experiment,in which the subjects repeatedly scan the multi-angle targets, and then the location model based on binocular vision of human eye is established; then the targets location information extracted from the parametric location model is converted to the manipulator coordinates via the quaternion coordinate transformation model between human eye and manipulator on the physics experiment platform to guide the positioning. The results show that the location model following binocular vision of human eye enables to effectively extract targets coordinates to provide space position feedback for bionic manipulator; simultaneously it provides a new idea for bionic manipulator space position feedback.%为了解决仿生机械臂空间位置反馈的问题,将眼电图作为神经反馈,应用于仿生机械臂空间位置反馈系统,通过多角度目标点重复扫视实验,分析眼球转动角度与对应眼电信号特征之间的映射规律,建立了人眼双目视觉定位模型.采用四元数法构建人眼、仿生机械臂坐标转换模型,并通过自行设计的物理实验平台进行坐标转换参数标定、计算旋转矩阵和平移向量,根据参数化定位模型将提取到的目标点转换为机械臂坐标系位置信息,从而实现了空间定位.研究结果表明,人眼双目视觉的定位模型可以有效地提取目标点坐标,为仿生机械臂提供空间位置反馈,同时也为仿生机械臂空间位置反馈提供了新思路.

  4. 基于统计方法的高速钢凸包型仿生表面磨损量建模%Wear modeling of convex bionic surface for high speed steel based on statistical methods

    Institute of Scientific and Technical Information of China (English)

    王燕琳; 王姣; 于爱兵

    2014-01-01

    采用激光技术在W6Mo5Cr4V2高速钢试件表面加工出凸包型仿生单元。选取凸包的直径、间距和高度作为仿生单元参数,应用Box-Behnken中心组合试验设计方法,设计并进行高速钢仿生表面的摩擦磨损试验,通过回归分析,建立高速钢仿生表面磨损量与仿生单元参数之间的二阶数学模型。分别应用F检验法和相关系数检验法,验证磨损量数学模型显著。磨损量模型的预测精度分析和磨损试验表明,建立的数学模型能够描述磨损量与仿生单元参数之间的关系。通过方差分析,得到高速钢凸包型仿生单元参数对仿生表面磨损量的影响程度依次为间距、高度和直径。%Convex bionic units were fabricated on sample surface for W6Mo5Cr4V2 high speed steel material by laser processing technology. Convex diameter,spacing and height were selected as bionic unit parameters. Wear experiments of bionic surface for high speed steels were carried out with Box⁃Behnken central composite design. Second order wear mathematic model between mass loss and bionic unit parameters was established with regression analysis method. F⁃test method and correlation coefficient method were applied to finish significance test for wear mass loss model. Prediction accuracy of wear mass loss model was analyzed. And wear experiment for prediction accuracy was tested. Mathematic model can describe relationships between wear mass loss and bionic unit parameters. With variance analysis method,influence of bionic unit parameter ranking on wear mass loss is obtained as convex spacing,height and diameter.

  5. Born-Infeld extension of Lovelock brane gravity in the system of M0-branes and its application for the emergence of Pauli exclusion principle in BIonic superconductors

    Science.gov (United States)

    Sepehri, Alireza

    2016-07-01

    Recently, some authors (Cruz and Rojas, 2013 [1]) have constructed a Born-Infeld type action which may be written in terms of the Lovelock brane Lagrangians for a given dimension p. We reconsider their model in M-theory and study the process of birth and growth of nonlinear spinor and bosonic gravity during the construction of Mp-branes. Then, by application of this idea to BIonic system, we construct a BIonic superconductor in the background of nonlinear gravity. In this model, first, M0-branes link to each other and build an M5-brane and an anti-M5-brane connected by an M2-brane. M0-branes are zero dimensional objects that only scalars are attached to them. By constructing higher dimensional branes from M0-branes, gauge fields are produced. Also, if M0-branes don't link to each other completely, the symmetry of system is broken and fermions are created. The curvature produced by fermions has the opposite sign the curvature produced by gauge fields. Fermions on M5-branes and M2 plays the role of bridge between them. By passing time, M2 dissolves in M5's and nonlinear bosonic and spinor gravities are produced. By closing M5-branes towards each other, coupling of two identical fermions on two branes to each other causes that the square mass of their system becomes negative and some tachyonic states are created. For removing these tachyons, M5-branes compact, the sign of gravity between branes reverses, anti-gravity is produced which causes that branes and identical fermions get away from each other. This is the reason for the emergence of Pauli exclusion principle in Bionic system. Also, the spinor gravity vanishes and its energy builds a new M2 between M5-branes. We obtain the resistivity in this system and find that its value decreases by closing M5 branes to each other and shrinks to zero at colliding point of branes. This idea has different applications. For example, in cosmology, universes are located on M5-branes and M2-brane has the role of bridge between

  6. Impact of airbag bionic midwifery on puerperas and newborns%气囊仿生助产术对产妇及新生儿的影响

    Institute of Scientific and Technical Information of China (English)

    尹维; 王建华

    2015-01-01

    Objective To observe the effects of airbag bionic midwifery and airbag non-bionic midwifery on puerperas and newborns. Methods Totally 240 puerperas without maternal contraindications were randomly divided observation group and control group with 120 cases in each group.The observation group was provided with automatic airbag bionic analyzer midwifery, and the control group with conventional mode of delivery.The effect of two midwifery methods on puerperas and newborns was compared.Results Compared with the control group, the observation group had lower cesarean section rate (χ2 =11.37, P<0.05) and neonatal asphyxia rate (χ2 =5.43, P<0.05).The labor ( the first stage, the second stage and total labor) shortened significantly ( t value was 12.79, 6.05 and 10.33, respectively, all P<0.05), and the incidence of postpartum hemorrhage (χ2 =7.76,P<0.05) and episiotomy rate (χ2 =8.31,P<0.05) decreased obviously in the observation group.Conclusion Using airbag bionic midwifery can significantly shorten maternal labor, reduce maternal pain and blood loss, enhance natural birth rate and reduce neonatal asphyxia rate.It is worthy of popularizing in clinics.%目的:比较气囊与非气囊仿生助产术对产妇及新生儿的影响。方法随机将240例无禁忌症的初产妇分成观察组和对照组,每组各120例。观察组产妇采用全自动气囊仿生助产仪助产分娩,对照组采用常规方式分娩,比较两组助产术对产妇和新生儿的影响。结果观察组与对照组相比,剖宫产率(χ2=11.37,P<0.05)与新生儿窒息率明显降低(χ2=5.43,P<0.05);产程(第一产程、第二产程及总产程)明显缩短(t值分别为12.79、6.05、10.33,均P<0.05);产后出血发生率(χ2=7.76, P<0.05)与会阴侧切率(χ2=8.31,P<0.05)有明显降低。结论采用气囊仿生助产术可明显缩短产妇的产程,且减少产妇的痛苦和出血量,

  7. BIONICOL. Development of a bionic solar collector with an aluminium roll-bond absorber; BIONICOL. Entwicklung eines bionischen Solarkollektors mit Aluminium-Rollbond-Absorber

    Energy Technology Data Exchange (ETDEWEB)

    Hermann, Michael; Lunz, Karin [Fraunhofer-Institut fuer Solare Energiesysteme, Freiburg (Germany); Hillerns, Frank [TYFOROP Chemie GmbH, Hamburg (Germany)

    2010-07-01

    The authors of the contribution under consideration report on the development of a bionic solar collector with an aluminum roll-bond absorber. As part of the EU research project BIONICOL experiments and simulations are performed with respect to fluid mechanics, internal pressure stability and corrosion. First absorbers with a size of 1,060 mm x 1,820 mm are manufactured. The measured pressure loss is lower than the pressure loss of the hydraulically optimized volumetric absorber according to TREIKAUSKAS. Several studies suggest that adequate corrosion protection is achieved under conditions of stagnation, if TYFOCOR {sup registered} L in an aluminum roll bond-absorbers is used. Measurements at collectors (efficiency curve and stagnation behaviour) as well as the further development of the collector to prototypes for demonstration plants are planned as next steps.

  8. Influence of processing medium on frictional wear properties of ball bearing steel prepared by laser surface melting coupled with bionic principles

    Energy Technology Data Exchange (ETDEWEB)

    Zhou Hong, E-mail: wangct08@mails.jlu.edu.c [Key Lab of Automobile Materials, Ministry of Education, Jilin University, Changchun 130025 (China); Wang Chengtao [Key Lab of Automobile Materials, Ministry of Education, Jilin University, Changchun 130025 (China); Faw-Volkswagen Automotive Company Ltd., Changchun 130011 (China); Guo Qingchun [Key Lab of Automobile Materials, Ministry of Education, Jilin University, Changchun 130025 (China); Brilliance Automobile Engineering Research Institute, Shenyang 110141 (China); Yu Jiaxiang [Key Lab of Automobile Materials, Ministry of Education, Jilin University, Changchun 130025 (China); Wang Mingxing [State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, 15 Beisihuanxi Road, Beijing 100190 (China); Liao Xunlong [Technical Management Department, CNNC China Zhongyuan Engineering Corp. Ltd., No 487 Tianlin Road, Shanghai 200233 (China); Zhao Yu [School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012 (China); Ren Luquan [Key Lab of Terrain Machinery Bionics Engineering, Ministry of Education, Jilin University, Changchun 130025 (China)

    2010-09-03

    Coupling with bionic principles, an attempt to improve the wear resistance of ball bearing steel (GCr15) with biomimetic units on the surface was made using a pulsed Nd: YAG laser. Air and water film was employed as processing medium, respectively. The microstructures of biomimeitc units were examined by scanning electron microscope and X-ray diffraction was used to describe the microstructure and identify the phases as functions of different mediums as well as water film with different thicknesses. The results indicated that the microstructure zones in the biomimetic specimens processed with water film were more refined and had better wear resistance increased by 55.8% in comparison with that processed in air; a significant improvement in microhardness was achieved by laser surface melting. The application of water film provided considerable microstructural changes and much more regular grain shape in biomimetic units, which played a key role in improving the wear resistance of ball bearing steel.

  9. Bionic imagery associated with product form design%意象关联产品形态仿生设计方法

    Institute of Scientific and Technical Information of China (English)

    袁雪青; 陈登凯; 杨延璞; 戚彬

    2014-01-01

    以生物体侧面主特征线为研究对象,提出了建立基于用户意象的仿生设计基因库思想和方法流程,旨在提高设计师对仿生原型的获取。选取生物体侧面轮廓线作为研究对象,利用贝塞尔曲线将其量化描述;通过调研获得用户期望意象形容词,经过聚类分析得到关键意象词汇并将其量化表征,输入库中获取生物原型。以u-fi猫的设计验证了该方法的合理性和可行性。%Line side of the main features in the organism for the study, it proposes the establishment of user-based imagery bionic design ideas and methods of gene libraries processes designed to improve access to designer bionic prototypes. It selects the organism side contours as the research object, uses Bezier curves to quantify the description. It gets user expectation imagery adjectives through research, critical imagery vocabulary is got through cluster analysis and quantified characteri-zation, it enters the library to obtain biologicalprototype. In u-fi cat design, it verifies rationality and feasibility of the method.

  10. 基于多元仿生的快速响应设计研究%Research on rapid response design based on multiple bionic

    Institute of Scientific and Technical Information of China (English)

    刘伟; 曹国忠; 郭德斌; 邢锡金

    2015-01-01

    To improve the efficiency of biological knowledge utilizing in the products'innovative design ,especially to support the rapid response design of products ,a multi‐bionics design method oriented to systematically functional implement was proposed .Multi biological effects coopera‐ting with biological system modeling method and technical conversion of the biological prototype was used .By comprehensively using the new products function modeling method ,the biological prototype could be converted into products'technical system satisfying the new market needs . The new method had obvious advantage over the ordinary bionics method .Lastly ,the design of a new kind rockery making instrument was used as an example to verify the practical value of the proposed theory .%为提高生物知识在产品创新设计中的利用效率,特别是对产品快速响应设计的支持,提出了一种面向系统功能实现的多元仿生设计方法。该方法以多生物效应为核心工具,配合生物系统建模方法、生物原型的技术转化方法,结合新的产品功能建模技术,能够快速地将生物原型转化成为满足市场新需求的产品技术系统,与现有技术特别是与传统仿生设计相比得以显著改良。最后利用上述理论以新型假山石制造设备的开发设计为例验证其实用性价值。

  11. 植物甾醇烟酸酯的合成及HPLC法的测定%Synthesis of bionic ester of phytosterol and analysis of it by HPLC

    Institute of Scientific and Technical Information of China (English)

    施光宗; 洪挺; 陆豫

    2011-01-01

    The overall yield of the two-step synthesising bionic ester of phytosterol was 87. 4% and the production was validated by liquid chromatograph/mass spectrometer (HPLC/MS). Homemadebionic ester of stigmasterol for the standard substance, The HPLC methods for bionic ester of phytosterol was established ,Chromatographic condition: reversed-phase column(150 mm×4. 6 mm)filled with 5 μm Eclipse XDB C18 Column as the solid phase, mobile phase was CH3OH, flow-rate was 1. 2 mL/min, detection wavelength was 210 nm,column temperature was 35℃. The experimental results showed that the method was simple,sensitive and accurate .%采用两步法合成植物甾醇烟酸酯,产物总收率为87.4%.通过液质联用仪对产物进行验证.豆甾醇烟酸酯为标准物,应用高效液相色谱法对产物中植物甾醇烟酸酯的含量进行了分析测定.以Eclipse XDB-C18柱(4.6mm×150 mm,5μm)为分析柱,甲醇为流动相,流速是1.2 mL/min,紫外210 nm检测,柱温35℃.实验结果表明,该方法快速、简便、分离度好.

  12. Reinforcement learning based attitude stabilization for bionic underwater robots%仿生水下机器人的增强学习姿态镇定

    Institute of Scientific and Technical Information of China (English)

    林龙信; 谢海斌; 沈林成

    2012-01-01

    A reinforcement learning based adaptive PID controller was presented for the attitude stabilization of a kind of bionic underwater robot with two bionic undulating fins. The scheme of the reinforcement learning based adaptive PID controller was given concretely including the control law and the parameter adaptive method based on reinforcement learning. Simulation experiments of yaw angle stabilization based on actual model parameters were carried out. The results indicate that the stabilization performance of yaw angle is improved distinctly after several iterations of learning control and the controller can overcome ordinary disturbances in short time, exhibiting its preferable adaptability.%针对一类双波动鳍仿生水下机器人的姿态镇定问题,提出一种基于增强学习的自适应PID控制方法.对增强学习自适应PID控制器进行了具体设计,包括PD控制律和基于增强学习的参数自适应方法.基于实际模型参数对偏航角镇定问题进行了仿真试验.结果表明,经过较小次数的学习控制后,仿生水下机器人的偏航角镇定性能得到明显改善,而且能够在短时间内对一般性扰动进行抑制,表现出了较好的适应性.

  13. Bionic PTZ system research based on fuzzy PID controlling%基于模糊PID的仿生机械云台系统研究

    Institute of Scientific and Technical Information of China (English)

    罗均; 周玉美; 胡钜奇; 李恒宇; 谢少荣

    2013-01-01

    The core of building bionic eye system is to imitate the function of human eye neural circuit so as to design the corresponding control strategy. In this paper, fuzzy adaptive PID control method is adopted to realize the function similar to vestibular nucleus’. Besides, the transfer function of controlled object is established according to medical research so as to determine the variation range of PID parameters in MATLAB environment. In the end, this control strategy is applied to the real bionic eye system based on the spherical parallel mechanism and plenty of experiments are conducted which show quick-response performance and robustness of the control system that conforms to human eye motion control mechanism.%构建仿生眼系统的核心是模拟人眼神经回路的功能,确立能实现类人眼控制的控制方法。本文在研究人眼神经回路的基础上,在前庭神经核处理接收到的各方信息部分采用模糊自适应 PID 控制,对于仿生眼运动控制部分,根据医学研究结果,确立合适的传递函数,在Matlab环境下通过仿真不断地调整PID的各项参数。最后将控制方法运用到真实的球面并联机构仿生眼系统中,可以看到系统有较好的抗颠簸性和鲁棒性,很好地符合了人眼控制的规律。

  14. 多孔径仿生复眼成像系统技术进展综述%Progress of Multiaperture Bionic Compound Eye Imaging Systems

    Institute of Scientific and Technical Information of China (English)

    金伟其; 林青; 裘溯; 米凤文

    2011-01-01

    Insects' compound eye is an ideal intelligence imaging system with the advantages of miniaturization, multiaperture and wide field of view. Although each ommatidium's aperture size and numerical aperture are very small which cause the poor eyesight of insects, the compound eye has high sensitivity to moving targets and high difference to light intensity, wavelenth and color. The researchers for a long time were absorbed in the research of the characteristics and composition of insects' compound eye. The common types of compound eye and present bionic compound eye were thoroughly analysised. The technical characteristics and composition of different bionic compound eye were compared with each other. Development tendency of this field was discussed.%昆虫复眼是一种理想的小型化、多孔径、大视场的视觉系统,具有智能特征,虽然由于每个复眼的孔径尺寸和数值孔径都很小,使昆虫复眼的视力较差,但是其对运动目标却有很高的探测灵敏度,且对光的强度、波长和颜色等都有较强的分辨力。长期以来,人们一直致力于昆虫复眼的特性以及仿生昆虫复眼的研究。对目前常见的复眼类型和现有的各种类型的仿生复眼系统研究进展进行了深入分析,对比了各种类型仿生复眼系统的结构和技术特点,并对仿生复眼系统的发展趋势进行了展望。

  15. SU-E-T-570: Management of Radiation Oncology Patients with Cochlear Implant and Other Bionic Devices in the Brain and Head and Neck Regions

    Energy Technology Data Exchange (ETDEWEB)

    Guo, F.Q; Chen, Z; Nath, R [Yale New Haven Hospital, New Haven, CT (United States); Yale UniversitySchool of Medicine, New Haven, CT (United States)

    2014-06-01

    Purpose: To investigate the current status of clinical usage of cochlear implant (CI) and other bionic devices (BD) in the brain and head and neck regions (BH and N) and their management in patients during radiotherapy to ensure patient health and safety as well as optimum radiation delivery. Methods: Literature review was performed with both CIs and radiotherapy and their variants as keywords in PubMed, INSPEC and other sources. The focus was on CIs during radiotherapy, but it also included other BDs in BHȦN, such as auditory brainstem implant, bionic retinal implant, and hearing aids, among others. Results: Interactions between CIs and radiation may cause CIs malfunction. The presence of CIs may also cause suboptimum dose distribution if a treatment plan was not well designed. A few studies were performed for the hearing functions of CIs under irradiations of 4 MV and 6 MV x-rays. However, x-rays with higher energies (10 to 18 MV) broadly used in radiotherapy have not been explored. These higher energetic beams are more damaging to electronics due to strong penetrating power and also due to neutrons generated in the treatment process. Modern CIs are designed with more and more complicated integrated circuits, which may be more susceptible to radiation damage and malfunction. Therefore, careful management is important for safety and treatment outcomes. Conclusion: Although AAPM TG-34, TG-63, and TG-203 (update of TG-34, not published yet) reports may be referenced for management of CIs and other BDs in the brain and H and N regions, a site- and device-specified guideline should be developed for CIs and other BDs. Additional evaluation of CI functions under clinically relevant set-ups should also be performed to provide clinicians with better knowledge in clinical decision making.

  16. Artificial Life Model Based on Bionic Fish%基于仿生机器鱼的人工生命模型

    Institute of Scientific and Technical Information of China (English)

    金旭东; 薛方正

    2012-01-01

    为了构建具有自学习、自适应、自协调的人工生命体,结合对鱼类生理结构和行为机理的研究和分析,提出了基于人工生命的仿生机器鱼系统。将非接触式供电技术应用于水下供电,模拟鱼类生理活动,在仿生鱼上实现了动态、无连接、不间断的电能供给,并且基于鱼类行为的层次结构,实现了"动机-行为-动作"的3层行为决策系统,引入强化学习算法,模拟鱼类与环境交互的后天学习过程。通过实物仿生鱼的游姿优化实验,证明了研究和设计工作的有效性。%In order to build self-learning, adaptive, self-coordination of intelligent agent, and combining with the research and analysis on physiological structure and behavior mechanism of natural fish, we proposed the artificial life system model of bionic fish. The paper applied non-contact power supply technology in underwater electrical supply, simulated physiological activity of natural fish, and real- ized dynamic, no-connection, uninterrupted power supply in bionic fish; Based on fish behavior hierarchy, the paper achieved the "motive-behavior-action" three layers decision-making system, and introduced the reinforcement learning algorithm to simulate environmental interaction learning process. The experiment of swim posture optimization verified the effectiveness of the research and design work.

  17. Current Situation and Prospects of Bionic Cultivation of Chinese Medicinal Materials%中药材仿生栽培效益分析及其展望

    Institute of Scientific and Technical Information of China (English)

    倪鼎文

    2016-01-01

    中药材仿生栽培是根据药用植物生长发育习性及其对生态环境的要求,吸取传统农业的精华,采用现代农业生产技术,运用系统工程方法再现药用植物与外界环境的生态关系而进行中药材集约化生产的模式,具有明显的经济效益、生态效益和社会效益,实行道地中药材的仿生栽培,对保护生态环境、提高栽培药材质量、满足社会用药需求均具有重要意义,也是保证中药资源可持续发展最有效的途径。%Bionic cultivation of Chinese medicinal materials is an intensive Chinese herbal medicine production mode, applying engineering approach in reappearing ecological relationship between medical plants and external environment, adopting modern agricultural production technique, and absorbing the essence of traditional agriculture according to the growth habits of medicinal plants and their requirements on ecological environment. It has obvious economic benefits, ecological benefits and social benefits, adopts the bionic cultivation of authentic Chinese herbal medicine, which has great significance to protecting the ecological environment, improving the quality of cultivation of medicinal materials, meeting the demand of social medicine, and is also the most effective way to ensure the sustainable development of TCM resources.

  18. Current research status of identification method for Chinese materia medica based on bionic olfaction%基于仿生嗅觉的中药材鉴别方法研究现状*

    Institute of Scientific and Technical Information of China (English)

    周华英; 李钟; 刘红秀

    2016-01-01

    概述了中药材“气味”鉴别的重要地位;综述了仿生嗅觉技术机理及其在中药材鉴别领域的研究现状,同时展望了仿生嗅觉技术在中药材领域的应用前景。%The importance of "odor" identification is introduced in this paper. Then the mechanism of the bionic olfactory technology,as well as the current research status about the identification of Chinese herbal medicines based on the technology is summarized;Lastly,some conclusions and application prospect about the bionic olfactory technology in the field of Chinese materia medica will be discussed.

  19. Study on the Prevention and Control Technology of Bionic Glue for Wolfberry Jaapiella sp.%仿生胶对枸杞红瘿蚊的防控技术研究

    Institute of Scientific and Technical Information of China (English)

    张铁梅; 孙海霞; 何嘉

    2013-01-01

    This research grasps the critical prevention period of wolfberry Jaapiella sp., uses the new technology-bionic glue to develop prevention experiment for wolfberry Jaapiella sp.in park closure period and leaf expansion period of wolfberry, defines various technical prevention methods of bionic glue for wolfberry Jaapiella sp., reduces the use of chemicals and protects the quality and safety of wolfberry products.%本项研究掌握住了枸杞红瘿蚊的防治关键期,采用了仿生胶这一新型技术,在封园期和枸杞展叶期开展对枸杞红瘿蚊的防治试验,明确仿生胶防控枸杞红瘿蚊的各项技术方法,减少化学药剂的使用,保障枸杞产品质量安全。

  20. The Mechanical Characteristics of Calatrava Bionic Long-span Spatial Architecture%浅析卡拉特拉瓦仿生大跨空间建筑的力学特征

    Institute of Scientific and Technical Information of China (English)

    张英开

    2013-01-01

    This paper mainly introduces the structure system of bionic long-span spatial architecture, and combining with the Spanish architect Calatrava's architecture, analyzes its material selection and mechanical characteristics, expounds the skeleton system, skin system, and the characteristics of the composite system. Combined with the instance, it deepens the impression of bionic large-span.%  本文主要介绍仿生大跨空间建筑的结构体系,并结合西班牙建筑师卡拉特拉瓦的建筑,对其材料选用和力学特征进行分析,阐述了骨架体系、蒙皮体系和组合体系的特点,结合实例,加深对仿生大跨的印象。

  1. 苍鹰翼尾缘结构的单元仿生叶片降噪机理研究%Noise-Reduction Mechanism of Bionic Coupling Blade Based on the Trailing Edge of Goshawk Wing

    Institute of Scientific and Technical Information of China (English)

    刘小民; 汤虎; 王星; 席光; 高德康

    2012-01-01

    利用逆向工程方法提取苍鹰尾缘非光滑形态的降噪特征元素,由此建立了仿生叶片结构模型;采用基于Smagorinsky亚格子应力模型的大涡模拟,结合基于Lighthill声类比的FW-H方程,分别对仿生尾缘锯齿叶片和标准叶片的流道模型进行了三维流场及声场的数值计算;通过分析仿生齿形结构对叶尾迹流场的影响,研究了仿生尾缘齿形结构的气流噪声控制机理.结果表明:仿生尾缘锯齿结构叶片的总A计权声压级比标准叶片降低了9.8 dB;叶片尾缘锯齿结构可以改变流场噪声峰值的分布规律,从而降低了噪声峰值,且大部分频率范围内的气动噪声均有所降低;仿生尾缘锯齿结构可以改变各截面尾迹涡的脱落位置,从而增大了涡心之间的距离,抑制了脱落涡对尾迹流动的扰动,进而减小了叶片表面的非定常压力脉动和尾迹涡引起的气动噪声.%A structural model of the bionic blade was established using the reverse reconstruction technique to extract the noise reduction characteristics of the non-smooth trailing edge shape of the goshawk wing. The LES with the Smagorinsky model and the FW-H equation based on Lighthill acoustic theory were adopted to simulate the flow field and the sound field of the bionic non-smooth trailing edge blade and the smooth blade. The aerodynamic noise control mechanism of the bionic tooth shaped trailing edge blade was examined on the basis of the analysis of the influence of the bionic tooth shaped structure on the trailing edge flow field. The results show that compared with the smooth blade, the total A-weighted sound pressure level of the bionic tooth shaped trailing edge blade decreases by 9. 8 dB. The bionic structure changes the distribution of the peak aerodynamic noise, reduces the peak size, and in most of the frequency range, the aerodynamic noise drops. The bionic non-smooth trailing edge of the blade changes the location of vortex

  2. Parameter Optimization for Spherical Parallel Mechanism Bionic Eye Based on Differential Evolution%基于差分进化的球面并联机构仿生眼参数优化

    Institute of Scientific and Technical Information of China (English)

    李树平; 谢少荣; 程军; 李恒宇; 李超; 罗均

    2011-01-01

    确定了仿生眼的目标工作空间,并以雅可比矩阵条件数最大值定义了最差灵巧度.利用差分进化的全局寻优能力对最差灵巧度的最大值进行优化,采用动态缩放因子解决优化过程中的早熟问题,增强了全局搜索能力.在满足仿生眼特殊结构要求并使目标工作空间内任意姿态都具有较好灵巧度的情况下,确定了合理的结构参数.最后实验表明参数优化后的仿生眼实物很好地满足了设计要求.%The target working space of bionic eye was firstly determined. The worst dexterity for bionic eye with the maximum condition number of Jacobian matrix was defined. Then, a differential evolution ( DE) algorithm was used to optimize the maximum of the worst dexterity index. Dynamic scaling factor was determined according to the overcome premature evolution and enhance the probability of finding global optimum. Reasonable structural parameters were chosen in the case of satisfying the special requirements of bionic eye structure and making arbitrary posture dexterity of target working space better. Finally, the experimental results show that bionic eye with the optimized parameters are good coinciding with the design requirements.

  3. 分子印迹仿生光子晶体的制备及其在己烯雌酚检测中的应用%The Fabrication of Molecular Imprinted Bionic Photonic Crystal for the Detection of Diethylstilbestrol

    Institute of Scientific and Technical Information of China (English)

    赛娜; 吴蕴棠; 孙忠; 高志贤; 黄国伟

    2014-01-01

    Molecular imprinted bionic photonic crystals was synthesized and applied in the detection of diethylstilbestrol residues. Molecular imprinted bionic photonic crystals with high performances were fabricated by the suspension polymerization and the vertical settlement. Molecular imprinted bionic photonic crystals showed the high sensitivity (as low as 10 ng/mL)and specificity. Based on the combination of molecular imprinting technique with photonic crystals, a high-performance detection materials, namely molecularly imprinted bionic photonic crystal, can be developed, exhibiting not only simple, inexpensive preparation but also high detection performance.%探讨分子印迹仿生光子晶体的制备及其在己烯雌酚残留检测应用的可行性。方法采用悬浮聚合法、垂直沉降法等方法制备出性能稳定的分子印迹仿生光子晶体。结果分子印迹仿生光子晶体对己烯雌酚残留最低响应浓度为10 ng/mL,并展现出较高的响应特异性。结论将分子印迹技术与光子晶体结合可发展出一种高性能检测材料,即分子印迹仿生光子晶体,不仅具有制备简单、制备材料低廉等优势而且具有较高的检测性能。

  4. Macrophages promote benzopyrene-induced tumor transformation of human bronchial epithelial cells by activation of NF-κB and STAT3 signaling in a bionic airway chip culture and in animal models.

    Science.gov (United States)

    Li, Encheng; Xu, Zhiyun; Zhao, Hui; Sun, Zhao; Wang, Lei; Guo, Zhe; Zhao, Yang; Gao, Zhancheng; Wang, Qi

    2015-04-20

    We investigated the role of macrophages in promoting benzopyrene (BaP)-induced malignant transformation of human bronchial epithelial cells using a BaP-induced tumor transformation model with a bionic airway chip in vitro and in animal models. The bionic airway chip culture data showed that macrophages promoted BaP-induced malignant transformation of human bronchial epithelial cells, which was mediated by nuclear factor (NF)-κB and STAT3 pathways to induce cell proliferation, colony formation in chip culture, and tumorigenicity in nude mice. Blockage of interleukin (IL)-6 or tumor necrosis factor (TNF)-α signaling or inhibition of NF-κB, STAT3, or cyclinD1 expression abrogated the effect of macrophages on malignant transformation in the bionic airway chip culture. In vivo, macrophages promoted lung tumorigenesis in a carcinogen-induced animal model. Similarly, blockage of NF-κB, STAT3, or cyclinD1 using siRNA transfection decreased the carcinogen-induced tumorigenesis in rats. We demonstrated that macrophages are critical in promoting lung tumorigenesis and that the macrophage-initiated TNF-α/NF-κB/cyclinD1 and IL-6/STAT3/cyclinD1 pathways are primarily responsible for promoting lung tumorigenesis.

  5. 基于力控制模式的四足仿生机器人的动力学仿真%Dynamics simulation of quadruped bionic robot based on force control

    Institute of Scientific and Technical Information of China (English)

    陈培华; 曹其新; 马宏绪

    2013-01-01

    The realization method of the quadruped bionic robot dynamics simulation based on the force control mode is studied for the quadruped bionic robot.First,virtual reality modeling language (VRML) is used to build the quadruped bionic robot simulation model,and the relevant parameters of the robot are defined.Then the kinematics equations of the quadruped bionic robot are obtained according to the space vector algebra.Recursive Newton-Euler algorithm(RNEA) is used to analyze the inverse dynamics of the robot,in order to achieve the required driving torques of the robot for the dynamics simulation in the foree control mode,and the dynamics simulation system based on robot middleware is realized.Finally,through the dynamics simulation experiment of the quadruped bionic robot in trotting gait,the dynamics simulation system based on force control is verified to be effective and practical.%针对四足仿生机器人,研究了基于力控制模式下的四足仿生机器人的动力学仿真实现方法.首先利用虚拟现实建模语言对四足仿生机器人进行仿真模型的建立和有关参数的定义;然后对四足仿生机器人按照空间向量代数建立运动学方程;接着,采用迭代牛顿-欧拉算法对四足仿生机器人进行逆动力学分析,以求得在力控制模式下的动力学仿真所需的各关节驱动扭矩,并建立了基于机器人中间件的动力学仿真系统.最后,通过四足仿生机器人在对角小跑步态下的动力学仿真实验,验证了该方法的有效性和实用性.

  6. The Research of Biosensor and Bionic e-Eye for Rapid Detection of Okadaic Acid on-Site%现场快速检测大田软海绵酸的传感器与仪器的研究

    Institute of Scientific and Technical Information of China (English)

    邱先鑫; 苏凯麒; 田玉兰; 邹瞿超; 方佳如; 李蓉; 王平

    2016-01-01

    Based onEnzyme-linked immunosorbent assay(ELISA),test kit,namely,enzyme sensor and the corre-sponding instrument was prepared,Bionic e-Eye for rapid,effective and quantitative detection of okadaic acid(OA) on-site. The detection limit of the kit is 0.19μg/L and the range is among 0.2μg/L and 5μg/L. The recovery rate is among 75%and 125%and the accuracy is within±15%. The performance of Bionic e-Eye is consistent with micro-plate reader and high performance liquid chromatography(HPLC). In addition,without artificial calculation,the instrument can show the results directly on the screen,which is very suitable for rapid detection,and will be a new technology for rapid and quantitative detection of OA on site.%研究并建立针对大田软海绵酸OA(okadaic acid)快速、有效的酶联免疫吸附试验ELISA(Enzyme-Linked Immunosorbent Assay)定量检测方法,制备了定量检测试剂盒-生物酶传感器,并研发配套的现场快速检测仪器-仿生电子眼(Bionic e-Eye),实现对OA的快速检测.对标准样品的参数进行测定,该OA试剂盒的检测限为0.19μg/L,检测范围为0.2μg/L~5μg/L;样品回收率为75%~125%,精密度在±15%以内.将Bionic e-Eye的检测结果和酶标仪及高效液相色谱HPLC(high performance liquid chromatog-raphy)所测数据的结果进行了比较,结果表明,Bionic e-Eye的性能与酶标仪的检测结果一致.此外,该仪器可以直接得出检测结果,不需要人工计算处理,适用于现场的快速检测,将是一种新的现场快速定量检测OA的技术手段.

  7. The Bionic Amoeba.

    Science.gov (United States)

    Wright, Emmett L.

    1979-01-01

    A demonstration is described that encourages students to engage in inquiry in biology. Using chemicals and an overhead projector, the instructor can simulate a living organism projected onto a screen. The reaction can aid students in defining the characteristics of life. (SA)

  8. The Bionic Library.

    Science.gov (United States)

    Billings, Harold

    1991-01-01

    Discussion of the information crisis focuses on possible new forms of library collections. Topics discussed include the rising quantity and costs of publications; improvements in access through new technologies; vendors' plans using electronic text; information flow; economics factors, including user fees; and the role of the commercial sector.…

  9. A bionics chemical synapse.

    Science.gov (United States)

    Thanapitak, Surachoke; Toumazou, Christofer

    2013-06-01

    Implementation of the current mode CMOS circuit for chemical synapses (AMPA and NMDA receptors) with dynamic change of glutamate as the neurotransmitter input is presented in this paper. Additionally, circuit realisation for receptor GABA(A) and GABA(B) with an electrical signal which symbolises γ-Aminobutyric Acid (GABA) perturbation is introduced. The chemical sensor for glutamate sensing is the modified ISFET with enzyme (glutamate oxidase) immobilisation. The measured results from these biomimetics chemical synapse circuits closely match with the simulation result from the mathematical model. The total power consumption of the whole chip (four chemical synapse circuits and all auxiliary circuits) is 168.3 μW. The total chip area is 3 mm(2) in 0.35-μm AMS CMOS technology.

  10. [Towards the bionic body].

    Science.gov (United States)

    Andrieu, Bernard

    2011-06-01

    Global technological progress is enabling people to see their mutilated bodies assisted by sophisticated prostheses. Multi-disciplinary and associative care help patients relearn daily living activities and accomplish various exploits.

  11. 深水耐压壳仿生设计与分析%Bionic design and analysis of deepwater pressure hull

    Institute of Scientific and Technical Information of China (English)

    张建; 王纬波; 高杰; 王明禄; 唐文献; 吴文伟

    2015-01-01

    The design theory and analysis method of kilometer water-depth bionic pressure hull for eggshell were presented. Shape function for chicken eggshell and goose eggshells was proposed, using Upadhyaya e-quation and N-R equation, respectively. Secondly, bionic pressure hulls of the chicken eggshell and goose eggshell with the water depth of 6 km were designed, and strength and stability of the two hulls were inves-tigated based on analytical method and numerical method. Finally, numerical models of four classical pres-sure hulls, including spherical hull, parabolic hull, cylindrical hull and ellipsoidal hull, were employed for comparison with the two bionic pressure hulls. The results showed that, meridional stress, zonal stresses and critical buckling stresses from the numerical method agreed well with the analytical method. The goose pressure hull has perfect pressure resistance, whose strength and stability were better than the chicken pres-sure hull. Spherical pressure hull has the most buoyancy reserve capacity. Buoyancy reserve capacity for goose pressure hull, chicken pressure hull, cylindrical pressure hull, ellipsoidal pressure hull, parabolic pressure hull was respectively 87%, 82%, 68%, 67%, 66% of the spherical pressure hull. Goose pressure hull could provide effective guide for the design of deepwater pressure hull, considering buoyancy reserve, interior layout and hydrodynamics.%文章研究了千米水深蛋壳仿生耐压壳的设计理论与分析方法,首先采用Upadhyaya方程、N-R方程,分别建立了鸡蛋壳、鹅蛋壳形状函数;其次,设计了6 km水深鸡蛋壳、鹅蛋壳仿生耐压壳,并基于解析法和数值法,对这两种结构进行强度和稳定性研究;最后,建立了球形、抛物线形、柱形、椭球形等4种典型耐压壳的数值模型,与仿生耐压壳作对比分析。结果表明:解析法和数值法所得的经向应力、纬向应力、临界屈曲应力吻合良好,鹅蛋壳仿生

  12. 肋条状仿生非光滑表面铸造成型方法%Casting method of rib-like bionic non-smooth surface

    Institute of Scientific and Technical Information of China (English)

    田丽梅; 卜兆国; 陈庆海; 李文渊; 李新红

    2011-01-01

    It is already confirmed that the riblets on the shark skin have the function of drag reduction, however, it is very difficult to achieve on surfaces of complex casting parts for such bionic non-smooth surface, which seriously restricted its engineering applications. This paper took non-smooth structure of triangle section as a example, and took the centrifugal pump impeller surface of rib-like on the type of 200QJ50-26 as a carrier and discussed a casting forming principle and process of bionic non-smooth surface. First, according to designing request, rib-like non-smooth structures were sculptured using knife and ruler on the hard rubber pad. Second, heat-resisting lacquer was spread evenly on the two side of the riblet and made them natural drying. Third, utilizing the characteristic of rubber, the rib-shape rubber was adhered to the sand moulding surface of impeller according to the shape of it. Finally, cast molding. Selecting heating-resisting lacquer and painting it play a vital role in casting process .The sharp edges of the triangle groove that meet the design requirements can be formed by using a casting shaping method of bionic non-smooth surface, and non-smooth surface can be formed in the full port of impeller internal, and this method adapts to the processing of the non-smooth surface of complex parts.%鲨鱼皮肤表面的肋条状(riblet)非光滑结构具有减阻功能,已经被证实,但这种仿生非光滑表面在复杂铸件表面上难以实现,严重制约了它在工程上的应用.该文以横截面为三角形的非光滑结构为例,以200QJ50-26型离心式水泵叶轮表面为载体,对仿生非光滑表面一次铸造成型原理及工艺进行探讨.该工艺采用原料→切割成型→涂高温漆→粘贴→风干→修剪→成型→铸造的流程,尤其是高温漆的选择及涂抹对该成型工艺具有至关重要的作用.采用仿生非光滑表面一次铸造成型法能形成设计要求的三角形沟槽的尖角,而

  13. 气囊仿生助产术助产528例临床分析%Clinical analysis of 528 cases of balloon bionic midwifery midwifery

    Institute of Scientific and Technical Information of China (English)

    龚代英; 陈莉媚; 韩洪霞; 邓代珍; 杜娜

    2014-01-01

    Objective:Explore the clinical value of airbag bionic midwifery.Methods: Choose 1056 cases of primipams and divide them into an observation group 528 cases(applied airbag bionic midwifery) and a control group 528 cases at random and then observe the stages of labor ,ways of delivery and perinatal condition.As a.Results:the ifrst stages of labor ,the second stages of labor and the total labor become shorter while the vaginal births improve.The perineum incision rates and cesaream section rates drop whose differences have obvious signiifcance; In the Observation Group after two hours bleeding rate reduces whose difference has statistical meanings.Both Groups have no perineum hematoma and no the cervical lacerated wounds.Postpartum hemorrhage and postpartum urinary retension never occur.Conclusion:Airbag bionic midwifery can obviously shorten the stages of labor and improve vaginal births so as to reduce the perineum incision rate and cesarean delivery rate,which obviously reduce postpartum hemorrhage.It is a convenient,effective,safe abd suitable modern midwifery,which is worth popularization and application.%目的:探讨气囊仿生助产术的临床价值。方法:选择初产妇1056例,随机分入观察组528例(应用气囊仿生助产)和对照组528例,观察两组产妇的产程、分娩方式及围产情况。结果:观察组的第一产程、第二产程及总产程缩短,阴道分娩率提高,会阴切开率及剖宫产率降低,差异有显著意义(P均<0.01);观察组产后2h出血量减少,差异有统计学意义(P<0.05)。两组均无会阴血肿、宫颈裂伤、产后出血、产后尿潴留及褥期感染发生。结论:气囊仿生助产术能显著缩短产程,提高阴道分娩率,降低会阴切开率及剖宫产率,能减少产后出血量,是一种简便、有效、安全、适宜的现代助产技术,值得推广应用。

  14. Observation of clinical application of airbag bionic midwifery instrument%气囊仿生助产仪在临床中的应用观察

    Institute of Scientific and Technical Information of China (English)

    孙芙林

    2014-01-01

    Objective to study the clinical application of airbag bionic midwifery in shortening labor and reducing postpartum hemorrhage in maternity department.Methods 200 cases of puerpera gave birth in our maternity department were selected as research subjects from July to october in 2013 in our hospital. these puerperal were 37-42+ weeks of pregnancy, with no cephalopelvic disproportion, no birth canal malformation, no antepartum hemorrhage and miyaguchi open more than 5cm and presenting part reached the ischial spine level. 100 cases who were given airbag bionic midwifery instrument for delivering by vaginal single expansion method were selected as observation group, and other 100 cases with conventional natural childbirth in the same period were selected as the control group. the stage of labor, postpartum haemorrhage and neonatal asphyxia condition were analyzed.Results The stage of labor was significantly reduced in observation group, with significant difference between two groups ( t=11.431,p0.01 ), and the minimum delivery time was 26min, the longest 4.8h, the average 2.6h. Conclusion airbag bionic midwifery which can obviously shorten the stage of labor, reduce postpartum hemorrhage, reduce the rate of cesarean section, reduce maternal and perinatal complications and improve the quality of obstetric, is the preferred method for midwifery of vaginal childbirth.%目的:探讨气囊仿生助产在产科缩短产程,减少产后出血的临床应用。方法选择2013年07月至2013年10月于本院产科分娩的200例产妇作为研究对象,选择孕37~42+周,无头盆不称,无产道畸形,无产前出血,宫口开大≥5cm 且先露部达坐骨棘水平,采用全自动气囊仿生助产仪行阴道单扩法助产分娩100例为观察组;选择同期常规自然分娩的100例为对照组。分析两组产程、产后出血及新生儿窒息情况。结果100例气囊仿生助产组产程明显缩短,两组比较有显著性差异( t=11.431,P0.01),自气

  15. Bionic Model for Coordinated Head-eye Motion Control%头眼协调运动控制仿生模型

    Institute of Scientific and Technical Information of China (English)

    毛晓波; 陈铁军

    2011-01-01

    The relationships between eye movements and head movements of the primate during gaze shifts are analyzed in detail in the present paper. Applying the mechanisms of neurophysiology to engineering domain, we have improved the robot eye-head coordination. A bionic control strategy of coordinated head-eye motion was proposed. The processes of gaze shifts are composed of an initial fast phase followed by a slow phase. In the fast phase saccade eye movements and slow head movements were combined, which cooperate to bring gaze from an initial resting position toward the new target rapidly, while in the slow phase the gaze stability and target fixation were ensured by the action of the vestibulo-ocular reflex(VOR) where the eyes and head rotate by equal amplitudes in opposite directions. A bionic gaze control model was given. The simulation results confirmed the effectiveness of the model by comparing with the results of neurophysiology experiments.%深入分析灵长类动物在注视点转移过程中眼球运动、头部运动及头眼协调运动的关系,将头眼协调运动的神经生理机制引入工程领域,改善机器人视觉系统的头眼协调问题.提出一种仿生型机器人头眼协调运动控制策略,将注视转移过程分为初始的快相和随后的慢相两个阶段.快相组合了高速眼球扫视运动(saccade)眼球运动和缓慢的头部运动,两者协调配合迅速切换注视点至新的目标;慢相通过前庭动眼反射(VOR),依靠头和眼的等量反向旋转运动维持目标稳定的同时,调整头部位置,使其朝向目标.建立了注视转移的仿生控制模型.仿真结果与生理学实验数据进行了对比分析,证明了所提控制策略与控制模型的可行性.

  16. 基于仿生模型的图像质量评价方法%An image quality metric based on bionic models#

    Institute of Scientific and Technical Information of China (English)

    侯伟龙; 高新波; 何立火; 高飞

    2011-01-01

    图像质量的客观评价是图像处理领域中的一个重要分支,其评价指标可以作为一种测度或者准则用来校准图像处理系统,抑或用于图像处理算法的优化及参数的优选。鉴于人眼是图像的最终受体,而视觉注意机制在人眼观看图像过程中起到非常重要的作用。因此本文针对图像质量评价的基本问题,提出了一种新的基于视觉注意机制的仿生学图像质量评价算法。结合视觉注意机制形成的原理,利用高斯塔式分解将图像分解为不同的空域尺度,从而模拟人类视觉系统的多通道特性。采用对比敏感度函数对不同的空域尺度进行视觉感知滤波,然后利用人类视觉系统的中央-周边感受野特性与侧抑制机制对图像特征进行提取,进而利用该特征来捕捉由图像降质引起的视觉感知的差异。实验结果表明,本方法能较准确地反映人眼对图像质量的主观感受,且计算复杂度较低,性能优于同类评价算法。%Image quality evaluation is to use some computational models to predict the quality of the specified image automatically and accurately. Since human eyes are ultimate receptor of images, it is better to mimic human visual system (HVS) to perceive the image quality. Based on the properties of the HVS, a novel bionic image quality metric (IQA) is proposed, which adopts several bionic characteristics, e.g. multi-channel decomposition, contrast sensitivity function, center-surround operation and lateral inhibition mechanism. Experimental results demonstrate that the performance of the proposed IQA method outperforms those of the existing methods.

  17. Development and experimental research of the bionic AUV propelled by turtle hydrofoil%水翼法推进的仿生AUV研制及实验

    Institute of Scientific and Technical Information of China (English)

    储定慧

    2011-01-01

    为丰富水下推进方式,进行了海龟水翼法推进技术仿生及实验研究.基于生物原型运动机理和本构特性分析,研制了仿水翼运动机构、仿蹼翼运动机构和仿生水翼法推进AUV,并进行了仿生AUV水池转首性能测试实验等,验证了运动参数变化对AUV所受纵向力分量和平面转首力矩的影响.实验结果表明,水翼拍旋角速度ω1对于AUV转首速度的影响呈降加速度正比趋势;AUV样机双翼反向差动转首因增加了涡漩阻力,比单肢转首运动的效率提高约60%等,这些为仿生AUV运动控制策略研究提供依据.%In order to enrich underwater propulsion types,the biomimetic and experimental research of turtle hydrofoil propulsion technology was carried out. Based on the analysis of motion principle and constitutive property about living prototype, the bio-hydrofoil motion machine, bio-palmiped motion machine and bionic hydrofoil propulsion AUV was developed. Then,the yawing performance test experiments of AUV in the pool were taken out, validating the influence that change of hydrofoil motion parameters effects on longitudinal component force and plane yawing torque of AUV. The experiments results indicated that, the angular velocity of hydrofoil stroke spin w, had a descending acceleration direct proportion to the yawing velocity of AUV; and the double hydrofoils contrary phase differential yawing had merely increased the motion efficiency about 60% rather than mono-limb yawing because of the much more vortex resistance around AUV. These experimental researches had already provided significant references to the study on control strategies for the bionic AUV.

  18. Bionic design of configuration of rigid wheel moving on sand and numerical analysis on its traction performance%沙地刚性轮构型仿生设计及牵引性能数值分析

    Institute of Scientific and Technical Information of China (English)

    张锐; 罗刚; 薛书亮; 杨明明; 刘芳; 张四华; 潘润铎; 李建桥

    2015-01-01

    为了提高车轮牵引性能,改善车辆在松散沙土介质环境的通过能力,该文以善于沙地奔跑的鸵鸟足部关键部位—足趾甲为仿生原型,通过仿生优化轮刺结构,设计出具有高牵引性能的仿生轮刺式沙地刚性轮,并以一种模拟月壤作为试验松散沙土介质材料,采用离散元软件PFC2D®的内置语言FISH和相关命令,建立了适用于非规则结构刚性轮的轮壤相互作用动态模拟系统,并获得试验验证。通过仿生轮刺式刚性轮与模拟月壤相互作用离散元模拟,并与矩形轮刺式刚性轮模拟结果对照,从轮下模拟月壤颗粒细观运动、接触力场、速度场以及车轮挂钩牵引力角度,验证了仿生轮刺式刚性轮具有优越的牵引性能,在车轮滑转率50%的稳定运行状态下,仿生轮刺式刚性轮的牵引性能可提高5.2%左右。该研究为提高刚性轮在松散沙土介质环境中的牵引性能提供了全新设计和研究手段。%It is very important to enhance the wheel traction performance for improving the traveling ability of the vehicle in the loose sand circumstance. The toenail, which is the key part of ostrich foot possessing the excellent running ability on sand, was regarded as the bionic prototype. Through bionic optimization of the wheel lug structure, the rigid wheel with bionic wheel lugs moving on sand with higher traction performance was designed. A kind of lunar soil simulants was selected as the experimental loose sand material. Using the built-in language FISH and the relevant command of Discrete Element Method (DEM) software PFC2D®, the dynamic simulation system, which was suitable for simulating the interactions between the rigid wheel with irregular structure and the loose sand material, was established. The simulation system was validated by the combination between laboratory test and DEM simulation. The interactions between the rigid wheel with bionic wheel lugs

  19. Study on the Control System of Flexible Bionic Wall-climbing Robot%柔性仿生爬壁机器人控制系统研究

    Institute of Scientific and Technical Information of China (English)

    于树林; 梅涛; 李冰; 孙少明

    2011-01-01

    Based on the research of movement mechanism of the gecko and the flexible structure of the feet theoretical and experimental, the paper proposed a new control method based on flexible bionic wall--climbing robot, the system used distributed structure based on MCU as the core controller, and made the robot stable crawl according to the precise gait planning.In the experimental environment the result showed the feasibility and validity of the method on the physical prototype.%通过对壁虎运动机理以及柔性脚掌结构的理论分析和实验研究,文中提出一种新型柔性仿壁虎爬壁机器人的控制方法,该控制系统采用以MCU为核心控制器的分布式系统,依据精确的步态规划实现了机器人的稳定爬行,在实验环境下通过实物样机验证了该方法的可行性和有效性.

  20. Bionic cutter of cutter suction dredger with ant colony optimization%绞吸式挖泥船仿生绞刀刀齿的蚁群优化

    Institute of Scientific and Technical Information of China (English)

    穆乃超; 许焕敏; 邬同舟

    2014-01-01

    为了提高绞吸式挖泥船仿生绞刀减粘降阻的效果,获得更高的生产效率和经济效益,应用蚁群算法对仿生绞刀的凸包的几何尺寸及其分布进行优化,得到对于不同类型的土壤和在一定的压力范围内所需的凸包形仿生绞刀的结构尺寸。%In order to reduce the adhesion and friction of soil, the effect of the adhesion and resistance, and gain higher productivity and economic efficiency. The application of ant colony algorithm for bionic cutter geometry and distribution of the convex hull is optimized to obtain the desired convex hull-shaped cutter biomimetic structure within different types of soil and a certain pressure range.

  1. Formation of hierarchical CuO microcabbages as stable bionic superhydrophobic materials via a room-temperature solution-immersion process

    Science.gov (United States)

    Liu, Jinping; Huang, Xintang; Li, Yuanyuan; Li, Zikun; Chi, Qingbo; Li, Guangyun

    2008-11-01

    A new hierarchical CuO architecture consisting of densely packed nanoplates and nanoribbons was directly fabricated on Cu foils via a room-temperature solution-immersion process. The architectures resembled cabbages both in the shape and structure, and the plates and ribbons served as the leafstalks and leaves of cabbages, respectively. By carefully monitoring the growth stages, it was found that self-assembled CuO nanoplates could be firstly formed on the Cu foils, and then CuO tiny flexible nanoribbons were grown from the edges of fresh plates. The effect of NaOH concentration on the morphology of CuO structures was discussed. Importantly, stable superhydrophobicity (contact angle CA = 155°), independent of pH value of the water droplets, was successfully observed for CuO microcabbages after modification. The wettability of other CuO micro- and nanoscale hierarchical surface structures fabricated using various NaOH concentrations was also presented. The realization of superhydrophobic bionic surfaces with a new hierarchical morphology of CuO will shed new insights in both the synthesis and application fields.

  2. 仿生非光滑水田犁壁的设计及田间应用试验%Design and Applying Experiments of the Bionic Non-smooth Plow Moldboard for Paddy Field

    Institute of Scientific and Technical Information of China (English)

    金俊; 李建桥; 张广权; 李英日; 朴明哲; 黄晗

    2015-01-01

    Soil adhesion which exists between soil and plow moldboard in the field work of paddy field plough , not only increases the working resistance and energy consumption of these machines , but also decreases the quality of work and the productivity .It was found that the non-smooth surfaces of the typical soil animal-dung beetle had the characteristics of anti-adhesion , anti-resistance and desorption by lots of tests and observations .Based on these researchers , bionic non-smooth plow moldboards were developed .In this paper , we analyzed the plowing resistance impact of dimention and distribution of bionic non-smooth structural units , then optimized parameters ( dimention and distribution ) , developed bionic non-smooth paddy field plow moldboard that had better properties of anti-adhesion and anti-resistance .The plo-wing resistances , oil consumption and plowing productivity of bionic plow and common plow were tested in paddy field . The results showed that, compared with common smooth plough, the bionic plow moldboard could reduce plowing resistance to 15.9%~18.0%, could save the fuel consumption to 11.9%, and could raise the plowing productivity to 20 .5%.Meanwhile , the bionic non-smooth plow , not only with the advantages of soil-turning , but also has highly effi-ciency of clod crushing and has a good application prospect .%水田犁田间作业时土壤对犁壁的严重粘附,将导致犁耕阻力增加、油耗增大、耕作质量和生产效率降低。经过大量的试验研究,已发现典型土壤动物蜣螂体表的减粘降阻和脱附效应,并据此开发了仿生犁壁。在前期研究基础上,考察仿生非光滑水田犁壁面上几何非光滑结构单元的尺寸和分布对犁耕阻力的影响,进行了设计参数优化,研制出具有减粘降阻性能的仿生非光滑水田犁壁。田间对比测试表明:仿生非光滑水田犁壁与普通光滑水田犁壁相比,降低犁耕阻力15.9%~18.0

  3. The main function of bionic air-bag midwifery skill reducing cesarean section rate%气囊仿生助产对降低剖宫产率的主要作用

    Institute of Scientific and Technical Information of China (English)

    黄崇梅; 王英; 何林清; 张琦

    2014-01-01

    目的:分析我国剖宫产率居高不下的原因,探讨应用气囊仿生助产技术对降低剖宫产率的可行性。方法:对我院未应用气囊仿生助产术前和已使用气囊仿生助产术后在我院分娩的孕产妇,从剖宫产指征、剖产率两方面进行回顾性对照研究。结果:未应用气囊仿生助产术前剖宫产指征中社会因素占56%,医学指征占44%,剖宫产率50%。应用气囊仿生助产术后社会因素占36%,医学指征占64%,剖宫产率下降至35%。讨论:运用气囊助产在分娩过程中缩短产程,减少会阴裂伤等优势。明显减少了剖宫产的社会因素指征,使剖宫产率明显下降。所以气囊仿生助产术是降低剖宫产率的有效措施,值得推广。%Objective: To analyze the reason of high cesarean section rate in our country, to investigate the feasibility of applying bionic air-bag midwifery skil to reduce cesarean section rate.Methods: We use the indication of cesarean section and cesarean section rate to undertake retrospective study about the differences of puerperal women in our hospital who apply bionic air-bag midwifery skil or not.Results: In the indication of cesarean section that puerperal women did not apply bionic air-bag midwifery skil, social factors account for 56% and medical indication accounts for 44%.The cesarean section rate is 50%.However, In the indication of cesarean section that puerperal women apply bionic air-bag midwifery skil, social factors account for 36% and medical indication accounts for 64%.The cesarean section rate drop to 35%.Discussion:Applying bionic air-bag midwifery skil have many advantages such as shortening the stage of labor during delivery and reducing perineal laceration. It makes the social factors of cesarean section and cesarean section rate decline obviously. In summary, bionic air-bag midwifery skil is an effective measure to reduce cesarean section rate and deserves popularity.

  4. Bionic Autonomous Learning Method Based on Operant Conditioning Automata%基于操作条件反射自动机的仿生自主学习方法

    Institute of Scientific and Technical Information of China (English)

    阮晓钢; 郜园园; 宋洪军

    2011-01-01

    This paper presents a bionic autonomous learning method based on operant conditioning automata, and designs a cognitive model of Skinner operant conditioning automata. The model adds a unit of behavior propensity to generate learning mechanism of ' reaction-strengthening' , and simulates nature biotic randomly compliance. A recursive learning algorithm is proposed, which is to simulate biotic operant conditioning mechanism and let it have bionic self-organization function including self-learning function and self-adaptive function. Finally, the model is proved to have the bionic self-learning ability and can be used to descript, simulate, and design various self-organizing systems.%提出了基于操作条件反射的仿生自主学习方法,设计了操作条件反射自动机(OCM)的认知模型.与原来的学习自动机相比,该模型增加了状态取向单元,利用“反应一强化”的学习机理,来模拟自然界生物的“随机应变性”.设计了OCM的递归学习算法,用于模拟生物的操作条件反射机制,使其具有仿生的自组织功能,包括自学习和自适应功能.通过模拟Skinner鸽子实验和倒立摆平衡控制实验,验证了该模型具有一定的仿生自主学习能力,可用于描述、模拟和设计各种自组织系统.

  5. Researching Summary of the Mantis Shrimp’s Visual Imaging Characteristics and Bionic Technology%螳螂虾视觉成像的特点及其仿生技术研究综述

    Institute of Scientific and Technical Information of China (English)

    张旭; 金伟其; 裘溯

    2016-01-01

    The mantis shrimp has the most complex eyes in the animal kingdom, its visual system has 16 types of different photoreceptors and the ability to detect and analyze the visible light, ultraviolet light, linear polarized and circular polarized light. The mantis shrimp’s visual system provides a model to design better imaging device. At present, bionic mantis shrimp visual imaging technology is at the initial stage and has broad applied prospects. This paper reviews the research progress of mantis shrimp’s visual characteristics and bionic techniques both in China and abroad, analyzing the mantis shrimp’s visual imaging advantages and pointing out the prospects of bionic mantis shrimp’s visual imaging technology.%螳螂虾是目前发现的拥有世界上最复杂眼睛的动物,其视觉系统有16种不同的光感受器类型,能够探测并分析可见光、紫外光、线偏振光以及圆偏振光。螳螂虾的视觉系统为设计出更好的成像器件提供了范例,目前,仿生螳螂虾视觉成像技术处于起步阶段,具有广阔的应用前景。本文对国内外螳螂虾视觉的特点及其仿生成像技术的研究进展进行了全面系统的综述,分析了螳螂虾视觉的成像优势,指出了仿螳螂虾视觉成像技术的应用前景。

  6. Efficient Cutting Mechanism of the New Bionic PDC Teeth and the Experimental Study%新型仿生 PDC 齿高效切削机理及试验研究

    Institute of Scientific and Technical Information of China (English)

    刘婧; 高科; 徐小健; 李梦

    2013-01-01

    Based on the bionic coupling theory and according to non-smooth morphology of shells, mole cricket and other animals &plants, a new kind of bionic PDC tooth is developed.The analysis is made on the single tooth motion process be-fore and after the wear by abaqus finite element software and the comparative analysis is made with the stress distribution state of the common PDC teeth.It can be seen that under the same conditions, the non-smooth PDC cutting teeth have bet-ter stress value and distribution state than the common PDC ones with good rock breaking effect.In addition, the abrasion ratio test is also made on these 2 kinds of cutting teeth;the test results also prove that the PDC bionic PDC teeth have some superiority.%利用仿生耦合理论,根据贝壳和蝼蛄等动植物的非光滑形态结构研制了一种新型的仿生PDC齿,并利用有限元软件abaqus对单个齿磨损前后的运动过程进行分析,与普通PDC齿的应力分布状态进行对比,可以看出,在同等条件下,非光滑PDC切削齿的应力大小及分布情况要明显优于普通的PDC切削齿,具有良好的碎岩效果。此外还对这2种切削齿进行了磨耗比试验,试验结果进一步证明了仿生PDC齿具有一定的优越性。

  7. Dynamics Simulation and Bionic Control Platform for Biped Robot with Matlab%基于Matlab的双足机器人动力学仿真及仿生控制平台

    Institute of Scientific and Technical Information of China (English)

    王健美; 付成龙; 黄元林; 陈恳

    2011-01-01

    针对仿生控制的特点,构建了一种Matlab环境下的双足机器人动力学仿真及仿生控制平台。为了充分利用关节自身的被动特性,描述了由非外界约束引起的自由度变化,以及双足机器人在运动相态间的合理切换。同时,考虑到碰撞是机器人运动的固有特性,建立了包括碰撞在内的混合动力学模型,最终实现控制器与机器人、环境的耦合。在此平台上,对设计的仿生控制算法进行了仿真:借助机器人自身运动状态和环境交互信息,协调各个关节的动作时序,实现了低能耗的稳定行走。结果表明,该平台为双足机器人仿生控制及其运动特性分析提供了有效的仿真手段。%Aiming at bionic control,a dynamics simulation and bionic control platform for biped robot was established based on Matlab.To utilize passive locomotive characteristics of joints,the variation of degrees of freedom caused by non-environmental constraints,and the consequent transformations between different motion phases were studied.Considering impact as inevitable character of robot locomotion,the hybrid dynamics model including impact was established,and the entrainment between controller,robot,and environment were finally realized.A bionic control method was proposed and tested on this platform.Depending on states of robot and environment information,the locomotion of each joint was coordinated,and the robot could walk stably with low energy consumption.The simulation result shows this platform provides an effective simulation means for bionic control and its motion characteristics analysis.

  8. 奔跑仿生机构的运动学模型构建与分析%Kinematic Construction and Analyses for a Running Bionic Mechanism

    Institute of Scientific and Technical Information of China (English)

    宋孟军; 丁承君; 张明路

    2015-01-01

    The construction method for kinematic model and the analyses for kinematic character-istics of musculoskeletal system of cheetah was studied herein.Firstly,based on the anatomical data, the kinematic model of forelimb and hindlimb mechanism were constructed,and the running process was simulated;Secondly,based on the position of each muscle distributed on the cheetah and the con-structed kinematic model of each limb,the whole musculoskeletal system of the cheetah could be con-structed,and the length of each muscle also could be obtained based on the calculation between two at-tached points of the muscle lines;Finally,the simulation experiments for the whole model of the con-structed musculoskeletal system were done using the recorded joint angles,and the variable torques applied to each joint of forelimbs and hindlimbls were solved by using the muscular force calculation method.High speed motion characteristics of mammals were analyzed from the perspective of bionics based on the available anatomical data.Real data support was provided for the realization of bionic mechanism of high speed running mechanism.The kinematic characteristics of the high speed running of the cheetah were studied.%对猎豹的奔跑机构的骨骼肌肉系统的运动学模型及运动学特性进行了研究。基于已有数据,对猎豹的前后肢建立了机构模型,对其奔跑的运动过程进行仿真,计算并描述其趾端运动轨迹;结合骨骼肌肉的位置参数与已构建的运动学模型,对猎豹的骨肌坐标系统进行建模,对肌肉肌群的长度变化进行计算;进行骨肌坐标系统的运动仿真,并利用肌肉力计算模型,求解了猎豹前后肢各关节的力矩变化。基于已有解剖学数据对哺乳动物的高速运动特性从仿生学角度进行了分析,为高速奔跑机构仿生机理的实现提供了切实的数据支持,对猎豹高速奔跑的运动学特性进行了充分研究。

  9. Impression Examination of Bionic Fingerprint Membrane and Seal Membrane%仿生指纹膜及印章膜的印痕检验

    Institute of Scientific and Technical Information of China (English)

    蔡立红; 袁兆锋

    2016-01-01

    目的:研究建立指纹膜及印章膜印痕的检验方法。方法制作指纹膜、印章膜样本,以红色印泥为介质,在收据纸上捺印指印、印章印及指纹膜、印章膜印痕,观察指纹膜、印章膜印痕的特点及其与真实造型体形成痕迹之间的差异。结果对于指纹膜印痕的检验,可根据指纹特征点进行比对,得出指印与膜印同一认定的结论;但相比指印,膜印的纹线较为粗糙、无明显汗孔特征、其边缘易起角、有气泡、有印泥堆积等特征。对于印章膜印痕的检验,当特征反映不明显时,也易得出印章印与膜印同一认定的结论;相比印章印,印章膜印痕容易出现变粗、字体细节变形、印章膜底部特征、印泥深浅不一及气泡等特征,印痕纹线也相对较宽。结论对硅胶材料制作的指纹膜、印章膜印痕的检验,应抓住其本质特征,注意其制作特征,寻找其使用特征。%ABSTRACT:ObjectiveTo study the characteristics of impressions produced with bionic fingerprint membrane and seal membrane and to discuss the examination techniques.MethodsExperiments on the bionic ifngerprint membrane and seal membrane, both made from silicone material, were designed with red inkpad as the medium and the receipt paper as the displaying object. The fingermarks and seal marks were made along with the obtainment of impressions of fingerprint membrane and seal membrane through the subjects being pressed on displaying objects. The characteristics of the impressions from relevant membrane were observed and compared with the real ones.ResultsThe impression of ifngerprint membrane could be identified by comparison of its feature with that of fingermark because fingerprint membrane had shown rough lines, irregular edges, bubbles, inkpad accumulation and no obvious sweat-pore imprints. As for seal membrane impression, it appears rough lines, font details deformation, revealing matrix

  10. Design of Hexapod Bionic Robot Based on STC Microcontroller%基于STC单片机的仿生六足机器人设计

    Institute of Scientific and Technical Information of China (English)

    吴宏岐; 郭梦宇

    2013-01-01

    To satisfy the requests of special conditions for the robot, a hexapod robot is designed by using bionics principle which can mimic the motion of some animal. The STC microcontroller is used as the core of control circuit. The AET168P1 steering gear control panel is used to drive the sports joints through the YZW-Y 09G type steering gear. It can achieve each function of application requirements under software control. The robot has a strong adaptability to all sorts of the ground condition, such as it is not easy to fall into the soft ground. The system has shown its high value such as low cost,strong anti-interference capacity,high sensitivity and reliability.%为满足特殊环境对于机器人的提出的要求,应用仿生学原理,设计一六足机器人,可模仿生物的运动形式;它以STC12C5A60S2型单片机为控制核心,通过YZW-Y09G型舵机来驱动的运动关节,选用AET168P1舵机控制板,在系统软件控制下来实现其各项功能.这种仿生六足机器人对各种地面有很强的适应能力,不易陷入松软地面里,且制作成本低,抗干扰能力强、灵敏度高、安全可靠,具有较高的使用价值.

  11. 象征意义仿生在我国景观设计中的应用%Symbolic Bionic Application in Landscape Design in China

    Institute of Scientific and Technical Information of China (English)

    董瑞云; 谭清萍; 许家瑞; 许先升

    2014-01-01

    In landscape design, landscape is not only need to be in the form of beauty, but also has certain deep connotation. Through the symbolism to convey meaning of landscape, landscape meaning has become an important form of development, meaningful landscape art play a decisive role for the promotion of human spirit and the development of human civilization. This paper analyzes the theoretical basis of symbolism in our country, it benefited from Chinese ancient philosophy system. From the perspective of ontology, illustrate the symbolic meaning of the product of nature and human evolution, as to provide theoretical basis for using symbolic bionic.%在景观设计中,景观不仅需要具备形式的美感,还要有一定的深层内涵。通过象征手法传达景观意义,赋予景观某种意义成为景观设计的重要发展形式,富有意义的景观艺术为人类精神世界的提升和人类文明的发展起到了举足轻重的作用。本文分析了我国象征意义的理论基础,认为它得益于我国古代的哲学思想体系,从自然的启示和社会文明的启示两方面举例说明事物的象征意义仿生设计,为景观设计运用象征意义仿生提供理论及实践依据。

  12. 基于仿生学原理的匀矿机设计及应用%Design and Application of Uniform Mining Machine based on Bionics Principle

    Institute of Scientific and Technical Information of China (English)

    刘和生; 厉汝文; 胡书文

    2014-01-01

    我国钨矿山企业大多数仍然保留了手选工序,为提高效率需要在手选皮带传送过程中进行匀矿。现有的匀矿方法是人工操作扒齿将矿石左右扒开,存在劳动强度较大、用工多、均匀性差等问题。针对匀矿具有动作简单、重复性大的机械特点,运用仿生学原理,采集了现场操作人员的主要工作参数,采用一个曲柄滑块机构模仿扒齿的扒矿的往复运行动作,设计了一款手选匀矿机。该设备工艺简单、安装维修方便、加工制造及运行成本低、噪音小、能耗低、匀矿效果好。%Hand-picking process in the tungsten mine has problems of labor intensity and poor picking uniformity. Bionics principles are applied to design a uniform mining machine adopting a crank slider mechanism. The major working parameters of operators are collected by imitating the repetition actions. The machine has the advantages of simple operation and maintenance, low production and performance costs, low noise and energy consumption and favorable sorting results.

  13. Application of bionics design in home textiles%仿生设计在家用纺织品中的应用

    Institute of Scientific and Technical Information of China (English)

    汪文忠

    2015-01-01

    仿生设计使现代家用纺织品能够更好地满足市场和消费的个性化需求,运用到纺织品设计能使其顺应时代需求.个性化的定制和需求已成为潮流趋势,展现个体鲜明风格的同时为人们的日常生活与工作带来了美与便利,而其中所蕴含的对自然、社会的独特理解,体现"天人合一"的整体观念即"人与自然统一"观点.纺织品不再只是单纯的复制、机械、生硬的工业产品,更加充满生命活力和趣味性.%Bionics design makes modern home textiles better meet the individual demand of market and consumer. The textiles with bionics design can also adapt to the demand of the times. Individual customization and demand have become trends, which not only show distinctive style, but also bring beauty and convenience to the daily life and work of people. The design contains a unique insight into natural and social, reflecting the concept of "Unity of Man and Nature". The textiles are not merely the duplicate, mechanical and stiff industrial products, but can be full of vitality and interestingness.

  14. 仿生水草强化生态塘技术改进研究%Study on the Improvement of Ecological Pond Technology for Bionic Aquatic Plants

    Institute of Scientific and Technical Information of China (English)

    曹蕾; 陆继来; 王志良; 蒋永伟; 陈琳; 涂勇

    2015-01-01

    选取苏南河网地区典型纳污塘为研究对象,采用仿生植物强化生态塘进行处理,分析了不同生态塘的构型、有、无跌水造流以及不同季节温度变化对出水的COD,BOD,NH3-N,TN和TP的影响。结果显示,分区型阿科蔓-植物净化塘采用跌水造流循环的处理效果最好,COD,BOD,NH3-N,TN,TP的去除率在80.5%~93.5%之间,各项指标均满足IV类地表水标准,透明度达到0.55 m。季节变化从水质上看,夏季最优,冬季其次,春季较差。%This paper selects the typical sewage pond in the river system in South of Jiangsu as the research target, using the bionic plant to strengthen the treatment efficiency of ecological pond. COD, BOD, NH3-N, TN and TP changes of the different configuration of ecological ponds were analyzed under conditions of different waterfall flowing and seasonal temperature. Results show that the treatment effect of the partition type Arco vine plant purification ponds with drop flow making cycle was the best and its COD, BOD5, NH3-N, TN, TP removal rate were all between 80.5% ~ 93.5%, which meeting the class IV surface water standards with transparency at 0.55 m. Results about seasonal changes show that the best water quality is in summer, and then in winter, that in spring is poor.

  15. Research on Temperature Sensing Technology for Bionic Prosthetic Hand%仿生假手的温度感知技术研究

    Institute of Scientific and Technical Information of China (English)

    田艳举; 张小栋; 张黎明

    2015-01-01

    In order to make the bionic prosthet-ic hand has maximum sensing functions,tempera-ture sensing schemes are demonstrated based on human’s need.Then temperature sensor is select-ed and measurement principle is analyzed.Accord-ing to the scheme,each module is designed.At last the whole system is obtained.With the sys-tem,simulation analysis with Proteus and experi-mental verification are finished.The experiment result shows that the prosthetic hand with temper-ature sensing system can help sense temperatures without affecting the prosthetic hand ’ s normal use.%为了使仿生假手能最大程度地模仿人手的感知功能,首先根据人类的实际需求进行温度感知方案的论证,然后针对假手的温度传感器进行选型并进行测温原理分析;根据选定的方案,进行温度感知各个模块的设计;最后搭建整个测温系统并利用 Proteus 进行仿真分析,最后针对该系统进行了实验验证,实验结果表明,具有该温度感知系统的假手能够实现待抓取物温度感知功能,且不影响假手的正常抓握。

  16. Design and implementation of intelligent bionic eye video monitoring system%智能仿生眼视频监控系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    蒋东国; 冷斌; 贺庆; 官冠; 王文韬; 丁磊; 胡欢

    2015-01-01

    To solve the existing video surveillance system ’s shortcomings of limited coverage ,polysemy of monocular camera po‐sitioning and poor performance of real‐time identification tracking ,a wide‐area perimeter video monitoring system was proposed which fully drew lessons from the nature and used multiple sets of bionic eye for collaborative monitoring .The mechanical struc‐ture and circuit control system were self‐developed ,and the 3D structural relations between monitoring system and boundary were set up by adopting the methods of binocular active vision and boundary setting .Several systems were designed and tested . The results show the system is characterized by wide coverage ,high intelligence and good stability .%为克服现有视频监控系统覆盖面积有限、单目摄像头定位多义性以及实时识别跟踪性能差的缺点,提出一种充分借鉴生物眼自然特性、多组仿生眼系统协同监控的广域周界视频监控系统。通过自主研制系统机械构造、电路控制系统,采用双目主动视觉定位、边界设定等方法,建立整个监控系统和边界的三维结构关系。搭建多组仿生眼系统并进行户外测试实验,实验结果表明,该设计拥有监控覆盖面积广、智能化高、稳定性好的特性。

  17. Parameterized modeling of bionic blade of axial fan based on CATIA%基于CATIA的轴流风机叶片仿生参数化建模

    Institute of Scientific and Technical Information of China (English)

    廖庚华; 刘庆平; 陈坤; 杨莹; 韩志武; 任露泉

    2012-01-01

    为解决轴流风机仿生叶片三维造型不能直接应用提取的乌翅膀翼型问题,通过对风机叶片的几何分析,推导出叶片二维平面叶型坐标到三维空间坐标的转换关系。运用EXCEL对叶型截面各离散点进行处理得到相应的空间坐标;基于CATIA的自由曲面造型功能生成叶片曲面,再转化成实体叶片;采用FLUENT对所设计的轴流风机模型进行仿真分析,计算结果与设计要求比较吻合。%The profiles of bird wings and the special structural morphology of wing features give the wing excellent aerodynamic characteristics. However, the wing profile and structural parameters can not be directly applied in computer aided design of axial fan blade. To solve this problem in axial fan bionic blade design, the geometry of fan blade is analyzed first; then the coordinate transformation of two-dimensional (2D) cross-section parameters of fan blade to three dimensional (3D) space is introduced. 2D coordinates of discrete points of the cross-section are handled with EXCEL to obtain 3D coordinates. The blade surface is created based on the free surface modeling function of CATIA to establish the 3D model of the blade. Computer simulation analysis is conducted by using FLUENT and results agree well with the design requirements.

  18. On the Layout Optimization of a New Bionic Antiskid Tire Tread%新型仿生防滑轮胎花纹布局优化研究

    Institute of Scientific and Technical Information of China (English)

    王洪伟; 周利坤

    2011-01-01

    传统轮胎防滑是通过提高轮胎表面的磨擦阻力来达到防滑目的。采用章鱼吸盘原理,从轮胎花纹防滑特点和仿生学基本原理入手,是进行轮胎花纹设计的一个新的尝试。在综合考虑传统轮胎花纹设计与仿章鱼吸盘式轮胎布局优化基本要求的基础上,初步设计了五种方案,并归纳出设计公式,进而建立以距离为横坐标、有效面积为纵坐标的研究方法。最后,通过借助MATLAB仿真五种方案吸盘有效面积变化规律,表明仿章鱼吸盘的布局设计较为科学合理。%The traditional way to make tire be non-slip is to increase the friction of the tire surface. However, it is a new attempt to design tire pattern based on octopus suckers principle that starts with the pattern characteristics and bionics principle. On the basis of comprehensive consideration of the traditional pattern design and basic requirement of the optimized layout of sucker tires tread imitating octopus, we design five programs at first and sum up design formula to establish the research methods with X-axis of distance and Y-axis of the effective size. At last, with the aid of MATLAB, the change scenario laws of the effective area for five suckers are simulated, which shows that the layout design of octopus sucker imitating is more scientifically reasonable.

  19. Model Design of Glide Hydrofoil based on Bionics Principle%基于仿生学原理的滑翔式水翼艇模型设计

    Institute of Scientific and Technical Information of China (English)

    常军然; 谢崟; 王凡

    2013-01-01

    A model of glide hydrofoil for one man is designed in order to enrich water sports and increase entertainment , com-petitiveness.Firstly, inspired by flying fish gliding, the shape and constructure of hydrofoil is designed based on design con-cept of combining shape and structure bionics.Then, the shapes of main components and its installation positions are de-scriped in more detail, and the 3D model figure is generated.Finally, simple model of glide hydrofoil is made on the basis of design results, surface navigation test is carried out, and test result showed that jump effect of glide hydrofoil model is good. Results of the model test offer reference for the design of manned-jumping device .%  为丰富水上运动项目,增加其娱乐性和竞技性,设计了一款单人驾驶的滑翔式水翼艇模型。基于飞鱼可实现滑翔的启发,利用仿生学原理,采用形态仿生和结构仿生相结合的理念,对水翼艇进行了外形和结构设计。并对其主要零部件的外形和安装位置进行详细说明,生成了3D模型图。依据设计结果,制作了简易模型,并进行水面航行试验,跳跃效果良好。该试验结果,可为进一步研制载人水上跳跃装置提供设计依据。

  20. Bionic Inference of Enterprise Vitality Index System%企业生命力指标体系的仿生推论

    Institute of Scientific and Technical Information of China (English)

    艾比江; 马跃月

    2013-01-01

    企业生命力状况直接关系到企业的盛衰,如何衡量企业的生命力是企业管理界关注的问题。以仿生学为基础,结合现有文献资料推论出企业生命力的三个二级指标,即:企业生存力、企业成长力及企业再生力的指标体系,通过企业生命力的3个维度(生存力、成长力和再生力)的分析,获得的企业生命力的评价指标体系,为研判企业生命力的状况提供了分析依据。%The vitality of enterprises is directly related to the rise and fall of the enterprise, how to measure the vitality of enterprises is the focus of enterprise management problem. Based on bionics, combined with the existing literature data to infer the vitality of enterprises three second level indicators, namely: the index system of enterprise survival capacity, business growth capacity and the vitality of enterprises, by the 3 dimensions of the vitality of enterprises (survival, growth and regeneration ability) analysis, it obtained the enterprise vitality evaluation index system, so as to provide analysis basis for evaluation of the vitality of enterprises status.

  1. 人工仿生脊髓导管的制备及性能分析%Preparation and performance of a bionic spinal catheter

    Institute of Scientific and Technical Information of China (English)

    朱祥; 陈旭义; 李瑞欣; 邢冉; 李东; 涂悦

    2016-01-01

    BACKGROUND:The traditional method of preparing tissue-engineered conduit has the defects of complex shape manufacturing and uncontrolable inner space structure, which cannot meet the requirements of some micro-catheters. OBJECTIVE:To prepare a bionic spinal catheter and analyze its performance. METHODS:The data model of the conduit was established using Solid Works software, and platform scan path was generated onthree-dimensionalprinter to produce the bionic spinal catheter with fibroin and colagen as raw materials. Then the water absorption, porosity, mechanical properties and celular compatibility of the conduits were detected. Next, the conduits were implanted into the subcutaneous tissue of rats and taken out at 1, 2, 3 and 4 weeks after surgery, respectively, to observe the degradation. RESULTS AND CONCLUSION:The porosity of the conduit was (53.6±1.0)%, the water absorption was (1347±19.4)%, and the compression modulus was (0.60±0.12) MPa. The micropores distributed uniformly with different size ranging from 10 to 240 μm. Spherical or fusiform stem cels survived in the pores and densely adhered to the conduit with pseudopodia. The degradation rate ofthe conduit was 20%, 59%, 74%and 100% at 1, 2, 3 and 4 weeks after surgery, respectively. These findings indicate that the artificial bionic spinal catheter has good biocompatibility and degradability.%背景:传统的组织工程导管制造方法存在复杂外形制造困难和内部空间结构无法控制的缺陷,不能满足一些微导管所要求的精确性和空间结构复杂性。  目的:设计一种人工仿生脊髓导管,并研究其性能。  方法:采用Solid Works制图软件建立导管数据模型,在3D打印机上生成平台扫描路径,以丝素蛋白和胶原蛋白为原料,制作人工仿生脊髓导管,检测导管的吸水率、孔隙率、力学性能及细胞相容性。将人工仿生脊髓导管置入SD大鼠背部皮下,置入后1,2,3,4周

  2. 仿生电子鼻在芝麻油掺伪检测中的应用研究%Detection of adulteration in sesame oil by bionic electronic nose

    Institute of Scientific and Technical Information of China (English)

    鲁小利; 王俊

    2016-01-01

    研究并设计了一套电子鼻系统,并将基于生物嗅觉的模糊神经网络作为其模式识别算法。将该仿生电子鼻系统应用于芝麻油掺伪的检测中。实验结果显示,该系统在预测精度、收敛速度及运行时间上都取得了较好的效果,可为芝麻油以及其他农产品的在线动态监测及保真提供快速、有效的手段。%An bionic electronic nose was developed and fuzzy neural network basedon biological olfaction was used as pattern recognition algorithms. The system was applied in the detectionof adulteration in sesameoil. The results showed that the bionic electronic nose had good prediction precision,highconvergent speed and less running time,and it was a fast andcredible method in monitoring and dynamic detectionof sesameoilorother productsonline.

  3. 高温仿生机制曲在酱香习酒生产中的应用%Application of Bionic Mechanical Press in the Making of High-Temperature Daqu

    Institute of Scientific and Technical Information of China (English)

    曾凡君; 罗胜; 杨刚仁; 李中泰; 蔡勇; 谢学先; 袁小军

    2016-01-01

    Xijiu Distillery cooperated with equipment manufacturers and successfully developed the first bionic mechanical press for the mak-ing of high-temperature Daqu. Then the machine-made Daqu was applied in the production of Jiangxiang Xijiu. Compared with traditional man-made Daqu, the yield and the quality of the produced liquor got improved significantly and satisfactory production effects had been achieved in practice. Bionic machine-made Daqu might be the development direction of Daqu-making in the future. (Trans. by YUE Yang).%习酒公司在高温制曲上积极创新,与设备厂家合作并成功开发了首台仿生机械压曲机,将制作的仿生机制大曲应用到酱香习酒的生产中,其产量和质量与传统人工大曲相比有明显的进步和提高,生产效果十分显著,仿生机械制曲是未来制曲生产的发展方向。

  4. Research Advances in the Key Technology of Bionic Configuration Design of Agricultural Machinery%农机产品仿生配置设计的关键技术研究进展

    Institute of Scientific and Technical Information of China (English)

    屠立; 裘乐淼

    2012-01-01

    The aim of the configuration design of agricultural machinery was to improve the products design efficiency. The research status a-bout the configuration design technologies both at home and abroad was introduced, and the configuration model and case-based reuse technique of agricultural machineries were summarized, finally its existing problems and future research direction were pointed out. It was concluded that the bionic configuration technology has become a main research direction of machinery design methods, and the technical research framework of the bionic configuration design was presented.%农机产品配置设计的目的是为了提高产品设计效率.介绍了国内外学者对配置设计技术的研究现状,对提出的农机产品配置建模与实例重用技术进行了总结,并指出了现存问题和下一步研究方向.认为仿生配置设计技术已成为目前国内外机具产品设计方法研究的主要趋向,并给出了农机产品的仿生配置设计技术研究框架.

  5. Application of Bionics Design Method in Product Modeling Design%形态仿生设计方法在产品造型设计中的应用∗

    Institute of Scientific and Technical Information of China (English)

    金薇; 王卫星

    2015-01-01

    In the product modeling design, domestic designers relatively lack the understanding and flexibility. They neglect to explore the design of human⁃related factors. The application of bionics design method in product modeling design makes the de⁃sign trace back to nature, gives the form the life symbol, and allows people to be closer to products and become compatible with them. Bionics design method contains the vitality of life and ultimately enhances the charm of the product.%在产品造型设计方面,国内设计师的认知较为局限,设计灵活性较差,忽略了设计中很多与人相关因素的探讨。形态仿生设计方法在产品造型中的应用则使得设计回归自然,赋予产品形态生命的象征,使产品与人的距离更短,相互之间的契合度更高,让设计产品有更强的生命力,最终提升产品的魅力。

  6. Cancer-associated fibroblasts promote non-small cell lung cancer cell invasion by upregulation of glucose-regulated protein 78 (GRP78) expression in an integrated bionic microfluidic device.

    Science.gov (United States)

    Yu, Ting; Guo, Zhe; Fan, Hui; Song, Jing; Liu, Yuanbin; Gao, Zhancheng; Wang, Qi

    2016-05-01

    The tumor microenvironment is comprised of cancer cells and various stromal cells and their respective cellular components. Cancer-associated fibroblasts (CAFs), a major part of the stromal cells, are a key determinant in tumor progression, while glucose-regulated protein (GRP)78 is overexpressed in many human cancers and is involved in tumor invasion and metastasis. This study developed a microfluidic-based three dimension (3D) co-culture device to mimic an in vitro tumor microenvironment in order to investigate tumor cell invasion in real-time. This bionic chip provided significant information regarding the role of GRP78, which may be stimulated by CAFs, to promote non-small cell lung cancer cell invasion in vitro. The data showed that CAF induced migration of NSCLC A549 and SPCA-1 cells in this three-dimensional invasion microdevice, which is confirmed by using the traditional Transwell system. Furthermore, CAF induced GRP78 expression in A549 and SPCA-1 cells to facilitate NSCLC cell migration and invasion, whereas knockdown of GRP78 expression blocked A549 and SPCA-1 cell migration and invasion capacity. In conclusion, these data indicated that CAFs might promote NSCLC cell invasion by up-regulation of GRP78 expression and this bionic chip microdevice is a robust platform to assess the interaction of cancer and stromal cells in tumor environment study.

  7. 仿生绒囊钻井液煤层气钻井应用现状与发展前景%Application state and prospects of bionic fuzzy-ball drilling fluids for coalbed methane drilling

    Institute of Scientific and Technical Information of China (English)

    郑力会

    2011-01-01

    The bionic fuzzy-ball drilling fluid was developed by imitating bacteria structure. Bionic Fuzzy-ball drilling fluid for underbalance drilling in well CLY-A shows the density of the fluid can range from 0.8 g/cm3 to 1.0 g/cm3 and it can be circulated without extra equipments. Compressed air drilling in well CLY-B proves that the different bionic fuzzy-ball additives varying drilling phases such as air, mist, foam and fuzzy-ball drilling fluid can be converted smoothly. Bionic fuzzy-ball drilling fluids for controlling and killing circulation loss in well DFS-C indicates it can control the leakage in forms of pressure reduced, pressure lost and pressure supported. The multi-branch drilling process in well FL-D shows both the cases of high viscosity with low shear rate and the low viscosity with high shear rate have good performance in cleaning wellbore and enhancing ROP. In well J-E, different formation pressure coefficients exist in the same open hole. The successful drilling proves it can improve the formation pressure bearing resistance in low-pressure section and help safe drilling in formations with narrow dynamic safe density window. Further study of bionic fuzzy-ball drilling fluid should focus on its microstructure, system type and circulation density, to satisfy more specific needs in drilling process.%仿照细菌结构开发了含仿生绒囊的钻井液.CLY-A井欠平衡钻井表明,无需附加设备,调整钻井液密度0.8~1.0 g/cm3即可循环;CLY-B井空气钻井表明,空气钻井过程中添加不同绒囊处理剂,可实现空气、雾、泡沫和绒囊不停钻转换钻井工作流体;DFS-C井防漏堵漏钻井表明,分压、耗压、撑压方式可控制钻井液漏失速度;FL-D分支井钻井表明,该钻井液具有低剪切速率下高黏度和高剪切速率下低黏度的特性,能够提高井眼清洁效率和机械钻速;J-E井不同压力系统共存于同一裸眼的井下复杂处理表明,该钻井液可以提高低压

  8. KCB-1型气囊仿生助产仪助产244例临床分析%Clinical airbag bionic midwifery instrument for childbirth

    Institute of Scientific and Technical Information of China (English)

    吴琴; 祝艳; 张秀华; 唐晓英; 贾晓梅; 胡海燕

    2012-01-01

    Objective To explore the clinical airbag bionic midwifery instrument for childbirth. Methods random selection primigravida 244 patients, the observation group 122 cases (application midwifery), control air 122 cases. Observe the two groups were the first and second maternal dilivery method, delivery time, time and among situation, etc. Results The observation group's first, second labor significantly shortened;Natural childbirth greatly improve,cesarean section rate reduce lmin Apgar score babies, bleeding and breastfeeding postpartum 2h situation compared with control statistically significant (P0. 05) sex. Conclusion Can obviously reduce air-bag operation of midwifery and reduce maternal labor pain and macrosomic infant damage,increase the natural childbirth, improve childbirth, reducing cesarean section rate during the day. reduce postpartum hemorrhage and postnatal urinary retention.%目的 探讨气囊仿生助产仪在临床分娩中的作用.方法 选择初产妇244例,随机分为观察组122例(应用气囊助产)和对照组122例,观察两组产妇的第一及第二产程时间、分娩方式、分娩时段和围产情况等.结果 观察组的第一、二产程时间明显缩短;自然分娩率大大提高,剖宫产率降低,新生儿1min Apgar评分、产后2h出血量及母乳喂养情况与对照组相比有统计学差异(P<0.05);白天分娩率大大提高,宫颈撕伤率、产后感染率两组差异无显著性(P>0.05).结论 气囊助产术可明显缩短产程,减少产妇疼痛及软产道损伤,增加自然分娩率,提高白天分娩率,降低剖宫产率,减少产后出血及产后尿潴留.

  9. 仿生复眼结构的制作与测试研究%Fabrication and Test Study of Bionic Compound Eye

    Institute of Scientific and Technical Information of China (English)

    陈德沅; 石云波; 邹坤; 贺婷

    2015-01-01

    为了更好地利用生物复眼的光学性能,介绍了一种新型仿生复眼结构。通过使用传统光刻胶热熔法和NOA73紫外曝光固化技术,得到了NOA73和PDMS材料的微透镜阵列,比较了它们的聚焦效果和光强分布,得到NOA73材料具有更好的光学性能;然后利用PDMS的柔韧性进行了两次倒模,再通过紫外曝光把NOA73固化,得到了背靠背形式的仿生复眼结构;最后对结构进行了成像测试、光强分布测试,并对结果进行了仿真和理论分析,可知该结构具有良好的形貌,光损耗小,光学性能优异并且具有很好的重复性,制作简单,成本低,能够模仿生物复眼的部分光学特性。%This paper presents a novel biomimetic compound eye structure in order to make better use of biological compound eyes’optical properties. We have made NOA73 and PDMS micro-lens array by using conventional photo⁃resist melting method and NOA73 UV curing technology,and certificated NOA73 has better optical performance by comparing their focusing effect and the light intensity distribution. Then using the PDMS flexible characteristics and NOA73 UV curing properties to make the back-to-back bionic compound eye structure. Finally making imaging tests,intensity distribution tests,simulation and theoretical analysis,the result shows that the structure has a good morphology,small optical loss,excellent optical performance and good reproducibility. It is simply made,low cost, and capable of imitating the part of optical properties of biological compound eyes structure.

  10. 面向仿生的嗅觉神经系统建模研究%Research on Olfactory Neural System Model Based on Bionics

    Institute of Scientific and Technical Information of China (English)

    张锦; 朱尚武; 王莹; 黄诗苹; 王如龙

    2011-01-01

    According to the biology characteristics of olfactory neural system,an olfactory neural system integrated model was proposed based on bionics.The proposed olfactory model simulated olfactory neural system from different aspects in order to make the model similar to the characteristics of olfactory neural system as soon as possible.Firstly,to the structure of olfactory neural system,the model simulated three key parts of olfactory neural system,the delay and feedback among them based on the anatomical structure of olfactory neural system.Secondly,to the neuron model,different models were used to simulate different neurons in different parts of olfactory neural system.Finally,to the dynamics of model,the model could give response to stimulus.When the stimulus is durative,the output of model shows steady pattern.When the special stimulus is inputted,the output of model shows the pattern of limit cycle.%着眼于嗅觉神经系统的生物学特点,从仿生学角度提出了一种嗅觉神经系统整合模型。模型从不同角度进行对嗅觉神经系统进行仿真,使其尽可能贴近嗅觉神经系统的生理学特征。首先,在结构上,根据嗅觉神经系统解剖结构,完整体现了嗅觉系统的三个关键部分,以及它们之间的延时和反馈链接。其次,在神经元模型上,根据嗅觉系统不同部分的特点采用不同的神经元模型进行模拟。最后,在模型的神经动力学上,模型能够及时响应外界刺激。在刺激持续输入时,模型输出呈现出稳定的振荡模式;在特定刺激输入时,模型状态呈现有节奏的极限环状态。

  11. OCPA仿生自主学习系统及在机器人姿态平衡控制上的应用%OCPA Bionic Autonomous Learning System and Its Application to Robot Poster Balance Control

    Institute of Scientific and Technical Information of China (English)

    蔡建羡; 阮晓钢

    2011-01-01

    An operant conditioning probabilistic automation (OCPA) bionic autonomous learning system is constructed according to nonlinear, strong-coupling and complex two-wheeled self-balancing robot dynamic system.The OCPA bionic autonomous learning system is a probabilistic automaton based on Skinner operant conditioning whose main character lies in simulating the operant conditioning mechanism of biology.And it has bionic serf-organization function which contains the self-learning and adaptive functions, and thus the OCPA automaton can be used to describe, simulate and design various serf-organization systems.The convergence of operant conditioning learning algorithm of OCPA learning system is proved theoretically.The results of both simulation and experiment applied to two-wheeled robot poster balance control indicate that the OCPA learning system does not require the robot model, and the motion balanced skills of robot are formed, developed and perfected gradually by simulating the operant conditioning mechanism of biology.%针对本质上非线性、强耦合的两轮自平衡机器人复杂动态系统,构造操作条件反射概率自动机(OCPA)仿生自主学习系统.OCPA仿生自主学习系统是一个基于Skinner操作条件反射的概率自动机,主要特征在于模拟生物的操作条件反射机制,具有仿生的自组织功能,包括自学习和自适应功能,可用于描述、模拟、设计各种自组织系统.从理论上分析OCPA学习系统的操作条件反射学习机制的收敛性.应用于两轮机器人姿态平衡控制的仿真和实验结果均表明,设计的OCPA仿生自主学习系统不需要系统的模型,通过模拟生物的操作条件反射机制,自组织地渐进形成、发展和完善其姿态平衡控制技能.

  12. Optimization and Bionic Design of 3-PCSS/S Spherical Parallel Mechanism for the Shoulder Joint%3-PCSS/S球面并联肩关节机构优化与仿生设计

    Institute of Scientific and Technical Information of China (English)

    侯雨雷; 汪毅; 范建凯; 胡鑫喆; 曾达幸

    2015-01-01

    In order to realize the aim of structure and function bionics of the shoulder joint, 3-PCSS/S (PCstands for the prismatic pair with the circular guide, Sstands for the spherical pair) spherical parallel mechanism is proposed as the prototype for the shoulder joint, and the mechanism optimization and bionic design are performed. The PCprismatic pair with the circular guide is equivalent to the revolute pair, the inverse kinematics of the mechanism is solved and the Jacobian matrix is obtained. According to the determined constraint condition of the orientation workspace, choosing the number of the points in the orientation workspace as the optimization object, the global optimization on the parametric variables of the mechanism is carried out using genetic algorithm. The bias design idea is proposed which expands the range of the output angle of the mechanism, and the flexibility of the shoulder joint is improved. The research possess theoretical guidance significance and practical application value on the bionic design and the entity development of the shoulder joint of the humanoid robot.%以实现人体肩关节结构和功能仿生为目标,提出以3-PCSS/S(PC表示具有环形导轨的移动副,S为球面副)球面并联机构为仿生肩关节的原型机构,并针对其开展机构优化与仿生设计.将具有环形导轨的移动副 PC等价为转动副,进行机构的位置反解并求解其运动雅可比.应用遗传算法,依据所确定的姿态工作空间约束条件,以机构姿态工作空间的点数为优化目标,对机构尺寸参数进行全局优化;提出偏置设计以扩大机构输出转角范围,提高肩关节的灵活度.研究工作对人形机器人肩关节实体仿生设计及其研制具有理论指导意义和工程应用价值.

  13. 一种混合驱动柔索并联仿生眼的轨迹规划%Trajectory Planning of a Bionic Eye Using Hybrid-Driven Cable Parallel Mechanism

    Institute of Scientific and Technical Information of China (English)

    谢少荣; 刘思淼; 罗均; 黄潮炯; 杨毅; 李恒宇

    2015-01-01

    在与眼球运动相关的解剖学和运动学的基础上,设计了一种符合Listing定理的基于混合驱动柔索并联机构的3自由度机器人仿生眼。通过矢量封闭方法建立了逆运动学模型,求解出柔索并联机器人的雅可比矩阵和结构矩阵。利用达朗贝尔定理建立柔索并联机器人的力矩平衡方程组,采用广义逆矩阵的相关理论,以柔索张力矢量的2范数最小为目标进行张力优化。用蒙特卡洛方法计算出仿生眼球可达工作空间。最后,在Simulink环境下进行仿真,规划运动轨迹并得到柔索并联机器人运动特性的仿真结果,证明了本文设计的机构符合Listing定理。结果表明:基于混合驱动柔索并联机构的机器人仿生眼结构合理,数学模型正确。%Based on anatomy and kinematics of human’s eyeball, a 3-DOF (degree of freedom) bionic eye with hybrid-driven cable parallel mechanism (CPM) is presented according to Listing’s law. An inverse kinematics model is built with the vector closure method, and Jacobian matrices and structure matrices of CPMs are solved. Force moment equilibrium equations of CPMs are established based on Darren Bell’s theorem. With the aim of minimizing the 2-norm of cable tension vectors, tension distribution is optimized according to generalized inverse matrix theories. The reachable work space of the bionic eye is calculated with Monte-Carlo method. Finally, the trajectories of CPMs are planned in Simulink environment, the corresponding kinematic performance results are obtained, and the designed mechanism is proven to be in accordance with Listing’s law. The result shows that the bionic eye using hybrid-driven CPM is reasonable, and the derived mathematical models are correct.

  14. 均匀设计法优选大黄半仿生提取工艺%Optimization of Semi-bionic Extraction Technology for Rhubard by Uniform Design

    Institute of Scientific and Technical Information of China (English)

    黄良永; 孟斐; 杨光义

    2014-01-01

    目的:优选大黄的半仿生提取工艺条件。方法:以芦荟大黄素、大黄酸、大黄素、大黄酚的总含量,总蒽醌含量和干浸膏得率为综合评价指标,采用均匀设计法优选大黄半仿生提取工艺。结果:通过优化并结合工业生产实际,确定三煎用水的pH依次为2.0、6.5、9.0;煎煮时间依次为:2,1,1 h。结论:本法为大黄的优化提取提供了理论依据。%Objective: To optimize semi-bionic extraction(SBE)of rhubard. Methods: The best extraction conditions of semi-bionic extraction for rhubard were optimized by uniform design with the total content of loeemodin, rhein, emodin, chrysophanol, and anthraquinone and the dried extract weight as the indices. Results:According to the optimization and the industrial production condi-tion, the pH values of water in three times of extraction were 2. 0,6. 5 and 9. 0,and the extraction time was 2, 1, 1 h, respectively. Conclusion:This method provides a theoretical basis for the optimization of rhubard extraction.

  15. Optimization of Semi-bionic Extraction Technology of Forsythia Suspensa by Uniform Design%均匀设计法优选连翘半仿生提取工艺

    Institute of Scientific and Technical Information of China (English)

    黄良永; 孟斐; 杨光义

    2014-01-01

    Objective:To optimize semi-bionic extraction(SBE)of Forsythia suspensa. Methods: The best conditions of semi-bionic extraction of Forsythia suspense were screened by uniform design with the total content of forsythoside A,and forsythin and dried extract weight as the indices. Results:The results of the uniform design were analyzed by DPS data, and combined with the industrial production conditions, the optimal extraction technology was as follows:the pH value of water in the three-time extraction was 2. 0,7. 0 and 10. 0 with the extraction time of 1. 0h,0. 5h and 0. 5h, respectively. Conclusion: The technology provides a theoretical basis for the extraction optimization of Forsythia suspensa.%目的::优选连翘的半仿生提取工艺条件。方法:以连翘酯苷A、连翘苷的含量和干浸膏得率为综合评价指标,采用均匀设计法优选连翘半仿生提取工艺。结果:通过优化试验并将试验结果经过DPS数据处理,确定最优条件并结合生产实际,确定三煎用水的pH依次为2.0,7.0,10.0;煎煮时间依次为:1,0.5,0.5 h。结论:本法为连翘的优化提取提供了理论依据。

  16. Optimization of Semi-bionic Extraction Conditions for Jinyin Qingre Oral Liquids by Uniform Design%均匀设计优选金茵清热口服液半仿生提取的工艺条件

    Institute of Scientific and Technical Information of China (English)

    叶方; 刘襄艳; 杨光义; 黄良永; 刘泽干; 杜婷

    2015-01-01

    Objective:To optimize the conditions of semi-bionic extraction for Jinyin Qingre oral liquids. Methods:The best con-ditions of the semi-bionic extraction for Jinyin Qingre oral liquids was optimized by uniform design with the yield of chlorogenic acid, geniposide and total phenolic acid, and the dried extract weight as the indices in a comprehensive evaluation. Results:The optimal pH of water for the three-time decoction was 2. 89, 6. 50 and 8. 43, respectively, and the total extraction time was 2. 0 h. Conclusion:Combined with the actual production, the pH value of water is 3. 0, 6. 5 and 8. 5 with the decoction time of 1. 0, 0. 5 and 0. 5h, re-spectively.%目的::优选金茵清热口服液半仿生提取的工艺条件。方法:采用均匀设计,以绿原酸得率,栀子苷得率,总酚酸得率和干浸膏收率为指标进行综合评价,优选金茵清热口服液半仿生提取的工艺条件。结果:优选的三煎用水pH依次为A=2.89,B=6.50,C=8.43;煎煮总时间D=2.0 h。结论:结合生产实际,确定3煎用水的pH依次为3.0,6.5,8.5;煎煮时间依次为1.0,0.5,0.5 h。

  17. 仿生双足水上行走机器人运动学分析及优化设计%Kinematics analysis and optimization design on a walking mechanism of bionic biped water-walking robot

    Institute of Scientific and Technical Information of China (English)

    曹凯; 徐林森; 沈惠平; 魏鲜明

    2013-01-01

    设计了仿生双足水上行走机器人行走机构,导出了两脚掌中心的运动轨迹方程、速度及加速度方程;以模拟蛇怪蜥蜴脚掌的运动轨迹为目标,选取给定脚掌拍击和扑打阶段的运动轨迹参数,进行给定轨迹的最优化设计,得到腿部机构的各个杆长参数.根据优化结果制作样机,并分析证明该仿生机构脚杆的运动能够满足蛇怪蜥蜴脚掌的运动轨迹要求.%A walking mechanism of bionic biped water-walking robot is designed; the equations of the location,velocity and acceleration is derived.To simulate the foot trajectory of basilisk lizard's,all the leg length parameters are achieved by optimizing the design of a given trajectory which is obtained by the set foot trajectory of impact and beat phase.The curve of angle between the feet of prototype and the horizontal is completed by the test of prototype and realized according to the optimized result.The simulation results show that the movement of this bionic walking mechanism can meet the basilisk lizards'foot trajectory.

  18. Self-Powered System of Articulated Bionic Robotic Fish Using Wave Energy Harvesting%基于波浪能获取的多关节仿生机器鱼能源自给系统

    Institute of Scientific and Technical Information of China (English)

    董二宝; 颜钦; 张世武; 杨杰

    2009-01-01

    A self-powered system of the multi-joint bionic robotic fish using wave energy to generate power by joint swing is presented to solve the energy bottleneck problem for the long-term underwater service. The frequency characteristics and energy harvesting potential of wave are analyzed according to the random wave theory. An energy harvesting system generating power by joint swing is designed, and its electromechanical model is developed. Finally, simulation and single joint swing based power generation experiment indicate that this method is effective and applicable to designing self-powered system for long-term underwater service of bionic robotic fishes.%为解决仿生机器鱼水下长期服役的能源瓶颈问题,提出利用波浪能摆动关节来发电的多关节仿生机器鱼能源自给系统.根据随机波浪理论分析了海浪的频谱特性和软能潜力,设计了利用关节摆动发电的能源获取系统,并建立该系统的机电模型.最后,通过仿真模拟和单关节摆动发电试验验证了该方法的可行性,为仿生机器鱼水下长期服役的能源自给系统设计提供了参考.

  19. 基于脑机接口技术下仿生手结构设计及分析%Structural Design and Analysis of Bionic Hand Based on BCI

    Institute of Scientific and Technical Information of China (English)

    李素蕊; 于毅; 董兵超; 李振新

    2014-01-01

    The study is about the design of bionic hand based on BCI. The process of the system is following:using EEG singal as the control source,which is used to control the movement of the rionic hand by the peripheral interface circuit.In this paper,it mainly introduced a parametric three-dimensional structural model of bionic hand created by ANSYS software.The rionic hand is based on the ingenious structure ofhe human bones.Which using elastic line instead of connecting rods,coupled with a small motor to achieve the finger joints movement.Meanwhile,Based on the static and dynamic mechanical analysis to achieve mechanical analysis and motion simulation of the finger.%本研究是基于脑机接口技术下进行的仿生手的设计。其系统流程为:脑电信号作为控制源,通过外围电路接口,实现控制仿生手的运动。本文主要介绍了脑机接口技术下仿生手控制,并通过对ANSYS软件创建参数化三维仿生手结构模型的分析,来验证所设计系统的可行性。该仿生手结构是以人体巧妙的骨骼的构成原理为依据,利用弹性线代替连杆,再加以小电机来实现手指关节的运动。同时在动静力学分析的基础之上,对所设计手指进行力学分析以及运动仿真。

  20. 基于仿生模式识别算法的海洋微藻识别研究%Recognition of marine microalgae based on bionic pattern recognition

    Institute of Scientific and Technical Information of China (English)

    耿春云; 郭显久

    2014-01-01

    依据微藻个体及成像的特点,给出了矩形度、能量、熵、惯性矩、相关度和局部平稳度等形状和纹理参数作为识别的特征值,并利用仿生模式识别算法对海洋微藻实现自动识别。利用文中给出的方法,对在海域中随机采集的不同形状、大小、纹理的微藻混合图像进行识别实验,结果显示,该方法能够准确识别出图像中不同种及同种不同状态下的藻体,说明该方法在微藻图像识别中是有效和可行的。%The automatic recognition of marine microalgae was achieved by the bionic pattern recognition algorithm via six shape and texture parameters including rectangular degree, energy, entropy, inertia moment, correlation and local stationary degree as the characteristic values of marine microalga recognition characteristics. The microal-ga specimens collected randomly in marine water were experimentally recognized by the above bionic pattern recog-nition algorithm according to the microalgae mixed images with the differences in the shape, size or texture of the algae . The results showed that this method accurately identified the microalgae between different kinds or same kind in different states, indicating that the method is effective and feasible in microalgae image recognition.

  1. 基于海鸥翼型的小型风力机叶片仿生设计与试验%Bionic design and test of small-sized wind turbine blade based on seagull airfoil

    Institute of Scientific and Technical Information of China (English)

    王骥月; 丛茜; 梁宁; 毛士佳; 关欢欢; 刘林鹏; 陈创发

    2015-01-01

    针对现有小型风力发电机效率远低于理论值问题,对100 W水平轴风力机叶片进行仿生改进。采用Spalart-Allmaras模型分析不同攻角下海鸥翼型与标准翼型的气动特性;以标准100 W水平轴风力机叶片为原型,结合海鸥翼型、标准弦长和计算得出的安装角,设计得到仿海鸥翼型叶片;利用SST k-ω模型进行仿海鸥翼型叶片与标准叶片气动特性数值模拟;搭建室内风力机效率测试平台,进行仿海鸥翼型风力机与标准风力机效率对比试验。结果表明:海鸥翼型气动性能优良,最大升力系数是标准翼型的2.19倍,最大升阻比是标准翼型的1.34倍;仿海鸥翼型叶片与标准叶片相比,输出功率提高25.77%。该研究可为小型风力发电机的改进设计提供参考。%Power of the existing small-sized wind turbine blades is much less than the theoretical value. This study improved 100 W wind turbine blades to increase the power of wind turbine. First of all, Spalart-Allmaras model which was suitable for airfoil stalling characteristics research was used to analyze the aerodynamic characteristics of seagull airfoil and standard airfoil with different angles of attack (AOA). Seagull airfoil and standard airfoil were got from seagull wing and standard blade by portable three-dimension scanner, Imageware software and Geomagic Studio software through standard blade scan, seagull wing scan, point cloud processing, reverse engineering modeling and cross section capture. Lift coefficients and lift-drag ratios of seagull airfoil and standard airfoil were calculated by Fluent software. Secondly, bionic blade was designed based on standard 100 W blades and Glauert theory. Thirdly, numerical simulations of bionic blade and standard blade were performed by using SST(shear stress transport) k-ω model which was suitable for blade performance research to analyze the aerodynamic characteristics of bionic blade and standard

  2. Bionic design and experimental research on blade of small axial fan based on characteristics of wings of typical birds%基于典型鸟类翅膀特征的小型轴流风机叶片仿生设计与试验

    Institute of Scientific and Technical Information of China (English)

    廖庚华; 胡钦超; 杨莹; 韩志武; 任露泉; 刘庆平

    2012-01-01

    The surface characteristics of the wings sparrow hawk and long-eared owl were extracted and used to optimize the blade of small axial fan to improve aerodynamic performance of the fan.The best fan was selected from eight bionic axial fans using CFD method.Computer simulation analysis and aerodynamic experiments show that the flow-static pressure curve of the bionic blade fan is remarkable better than that of prototype fan.The maximum mass flow rate of the bionic fan is 6.1% higher than that of prototype fan and the maximum static pressure is 7% higher,respectively.Experiments also show that the V-section is better than arc-section of the blade.The study provides a preliminary basis for optimizing the parameters of the blade of bionic fan.%基于提取的雀鹰、长耳鸮翅膀的表面特征对小型轴流风机的叶片进行仿生优化,以求提高风机的气动性能。设计出8种仿生风机模型,通过CFD计算选出最优的仿生风机模型进行性能试验验证,并与原型风机进行了对比。对比试验流量-静压曲线发现,仿生风机气动性能明显好于原型风机,最大质量流量提高了6.1%,最大静压提高了7.0%,并发现V型截面好于圆弧型截面。本研究为叶片仿生参数的进一步优化提供了前期基础。

  3. Image reconstruction algorithm inspired by a bionic compound eye system%受昆虫复眼系统启发的图像重构算法

    Institute of Scientific and Technical Information of China (English)

    李敏; 徐立中; 石爱业; 黄凤辰

    2009-01-01

    虽然基于像素重排列的迭代反投影算法已经在TOMBO模型构建时提出,但是该方法需要大量的迭代次数,同时在噪声平滑效果上还有待于改进.因此一种正则化的迭代反投影算法被提出为该系统重构图像.采用自适应的总变差正则化因子和双边总变差正则化因子来正则化迭代反投影算法.自适应总变差正则化因子根据图像的当前信息来选择参数,因此用该因子正则化后的迭代反投影算法可以在平滑噪声的同时保留高频成分.而双边总变差正则化因子是依据像素点的最邻近领域和次邻近领域来判别该点是否为噪声点,考虑了更多的图像信息,从而可以跨过边缘平滑噪声.同时双边总变差正则化因子可以大大地加速重构的过程.实验是建立在仿生复眼图像上,实验结果证明了这两种正则化的迭代算法的有效性.%Iterative back-projection algorithms based on pixel-rearrangement have been reported since thin observation modules using bound optical(TOMBO) systems were presented. However computational costs are high and the noise smoothing ability needs to be improved. So a normalized iterative back-projection algorithm was proposed to get reconstructed images for this system. Both an adaptive total variation normalized factor and a bilateral total variation normalized factor were employed to normalize the iterative back-projection algorithm. The former factor chose parameters adaptively according to present image information, so it could retrieve the high frequency components while smoothing noise. However, the latter factor determined the noise points according to nearest and next nearest neighborhood of pixels, in which more image information was considered so that it smoothed noises across boundaries. Also the latter factor accelerated the reconstructing process greatly. Experiments were based on bionic compound eye images. And the results demonstrated that the suggested

  4. The Function and Prospect of Bionics Wild Cultivation of Edible Fungi in Beijing Eco-conserving Division%食用菌仿野生栽培在北京生态涵养发展区的作用与展望

    Institute of Scientific and Technical Information of China (English)

    李金海; 胡俊; 刘松; 秦岭; 陈青君

    2011-01-01

    食用菌仿野生栽培能够有效利用人工林和天然林的大环境,产品天然优质。介绍了北京生态涵养发展区野生菌原始的生长状态、食用菌仿野生栽培的环境优势、仿野生栽培的作用、仿野生食用茵产品的优缺点、仿野生栽培适宜的种类、技术和发展前景等.%Bionics wild cultivatton of Edible fungi can make est, and with high quality product. This paper introduces the original growth status of wild mushroom, the environmental advantages of bionics wild cultivation of edible fungi, the function and species suitability of bionics wild cultivation, the advantages and disadvantages of the product, the technology and prospect, etal.

  5. Speed of bionic breaking corn ear hand and experiment on power consumption%仿生玉米掰穗装置掰穗速度与功耗试验

    Institute of Scientific and Technical Information of China (English)

    张丽萍; 李其昀

    2015-01-01

    目前国内外采用的玉米摘穗装置均存在着籽粒破损率高、含杂率高和功率消耗大等问题,为解决上述问题,该文采用模仿人工收获玉米果穗的方式,设计了仿生玉米掰穗装置。首先进行拉力测试试验,分别在静态与动态2种条件下对传统摘穗方式与仿生掰穗方式收获玉米果穗所需力进行测量,验证仿生掰穗方式可行性;然后设计仿生玉米掰穗装置试验台并进行掰穗速度与功率消耗的综合试验,得到掰穗手速度与纯功率消耗的关系。试验表明:静态传统摘穗方式与仿生掰穗方式收获玉米果穗平均所需力分别为435和41.4 N。动态传统摘穗方式与仿生掰穗方式收获果穗平均所需力分别202.5和20.7 N。仿生掰穗比传统摘穗所需力大大减少。与传统玉米收获装置相比(正常工作速度1.2 m/s),该装置功率消耗低,约为36 W,小于传统一对摘穗辊消耗的纯功率(240 W)。该研究为玉米收获机摘穗部件的改进提供了参考。%Corn has already been the first major grain crop in China and its planting area is growing quickly. Compared to the wheat mechanical harvesting, corn mechanical harvesting level is very low. For traditional corn harvesting machine, snapping device most snaps corn ear. It makes extrusion or nibbling on the corn ear caused by snapping roller, leading to the high loss rate. It hinders the development of mechanization. As the subsidies on agriculture are generous in recent years, corn harvesters have been developed rapidly. But there are also many problems that can’t be solved in current corn harvesters, such as high grain damage rate, high impurity rate and high power consumption. So a new way to pick up corn is needed urgently. In order to solve these current problems, our research team designs the bionic device of breaking corn ears. This design’s inspiration is from artificially picking up corn ears; people pick up

  6. The Qigong Bionic Kidney Belt

    Institute of Scientific and Technical Information of China (English)

    1995-01-01

    TheQigongBionicKidneyBeltTheQigongbionickidneybelt,oneofaseriesofqigongproducts,tookthegoldmedalatthe1994ChinaHealthProductsC...

  7. Bionic Skin – Disartificialising architecture

    OpenAIRE

    Braun, Dirk Henning; Inhofer, Sebastian

    2016-01-01

    It has always been a basic principle of biomimicry to not just copy natural ideals. But instead of transferring all the possible advantages of natural solutions into our restricted human technologies as biomimicry is doing today, we should try to reconnect our productions and therefore ourselves further back with our natural origin. Resulting from this approach it has to be proven if the exploitation of living material and the use of genetically engineered life-forms in an architectural conte...

  8. Doric, Ionic, Bionic and Printmaking.

    Science.gov (United States)

    Hammond, Mary Alice

    1981-01-01

    Describes a combined local history/printmaking project conducted by students in grades one through nine at Armitage Academy in Kenosha, Wisconsin. Students studied and drew local buildings and printed the results as a calendar. (SJL)

  9. Hydro-Bionics Serves Fleet

    Science.gov (United States)

    1992-03-18

    nekton animals (predominantly cetaceous and cephalopods ), since it is long ago established that their relative power expenditures for achievement of...depend on mode of life, and in connection with this and from speed of motion. Nature in the process of evolution optimized the DOC - 91123900 PAGE 5...thoracic and caudal fins participate in heat exchange. Cephalopods - marine mollusks (squids, octopi, cuttles) have body, in form close to body of

  10. 仿生非光滑花纹沟对轮胎抗滑水性能的影响%Study on influence of bionic non-smooth pattern groove on tire anti-hydroplaning performance

    Institute of Scientific and Technical Information of China (English)

    杨建; 王国林; 周海超; 薛开鑫

    2015-01-01

    Taking the passenger car tire 205/55R16 as the research object ,the model of hydroplaning of the deformed tire tread was built using computational fluid dynamics method .The air‐water two phase flows was applied to stimulate tire hydroplaning ,and then compared the computational critical hydroplaning speed with NASA hydroplaning predicted speed as well as velocity under tire force bal‐ance w hen tire hydroplaning occurred .Based on the hydroplaning model ,inspired by the idea that bionic non‐smooth surfaces could reduce fluid adhesion ,the effect of the V‐riblet structure with its an‐gle of 60° and height of 0 .6 mm on groove ,water displacement and flow resistance was analyzed .The effect of transplantation of the V‐riblet into the bottom of rib grooves on bionic tire hydroplaning ve‐locity was then analyzed .The results show that tire hydroplaning model can be used to research the water movement when tire hydroplaning occurs ,and the bionic non‐smooth rib grooves can improve water speed in the tire footprint and reduce water hydrodynamic pressure acted on and improve the tire hydroplaning velocity compared with origin tire .%以205/55R16乘用车轮胎为研究对象,采用计算流体动力学建立了考虑胎面花纹变形的轮胎滑水分析模型;以气‐液二相流数值模型分析了轮胎的滑水性能,并将临界滑水速度仿真值与 NASA滑水速度预测值及轮胎发生滑水时力平衡下的速度进行对比.在此基础上,引入仿生减阻理念,研究了夹角为60°、高度为0.6 mm的仿生对称V形结构对花纹沟排水量和水流阻力的影响,并将其结构特征信息等效移植到接地区轮胎花纹沟底,进行了仿生花纹轮胎的滑水性能分析.结果表明:所建滑水分析模型可用来分析轮胎滑水时的流体运动特性;相对原花纹轮胎,仿生非光滑花纹沟轮胎通过提高接地区花纹沟内水流速度,降低了胎面动水压力,提高了临界滑水速度.

  11. 凹槽形仿生针头优化设计与减阻机理分析%Optimization Design and Drag Reduction Mechanism Research on Groove Shape Bionic Needle

    Institute of Scientific and Technical Information of China (English)

    齐迎春; 丛茜; 王骥月; 齐欣

    2012-01-01

    以蚊子和蝉的口针为原形设计了凹槽形仿生针头,运用试验优化技术,通过显示动力学接触分析,证明凹槽形仿生针头具有明显减阻效果,最高减阻率可达40.94%;分析凹槽针头表面非光滑几何形态参数对注射时针头外壁所受摩擦力的影响规律,凹槽深度对摩擦力影响最大,宽度对摩擦力影响最小,凹槽深度和宽度与摩擦力呈抛物线关系,凹槽条数与摩擦力呈线性关系,随着凹槽条数增加,摩擦力减小;探讨仿生针头减阻机理,针头凹槽结构的存在可减小针头外壁与软组织的接触面积,使软组织与针头表面间存在间隙,产生空气膜,降低摩擦因数,另一方面,可使皮肤中的液体易于逸出,增加了润滑效果.依据国标,对数值分析所用的9种凹槽形仿生针头进行了穿刺试验,试验结果与数值分析结果一致.%Taken the microstructure of mosquitoes and cicada mouthparts as the prototypes, one groove shape bionic needle is design. The conclusion that the groove shape bionic needle has obvious resistance reduction effect is proved through contact dynamic analysis using the method of orthogonal design of experiment. The highest resistance reduction rate can amount to 40.94%; the influence law between the non smooth geometry parameters and the friction on the needle external wall getting in the injecting process is found out. The greatest impact factor of the friction is the groove depth, the minimum width. The relationship between the groove depth, width, and friction is a parabola. The relationship between groove number and friction is linear. The groove number increases, friction decreases. The influence order of factors and optimal levels are determined. The existence of the needle groove structure can reduce the contact area of the needle outer wall and soft tissue and this gap can produce a film of air, reducing the friction coefficient. On the other hand, the liquid can make the skin easy to

  12. Bionic electrical stimulation of brain with medium frequency electrotherapy for treatment of cervical spondylopathy of vertebral artery type%脑仿生电刺激配合中频电疗治疗椎动脉型颈椎病

    Institute of Scientific and Technical Information of China (English)

    何南

    2012-01-01

    目的:观察脑仿生电刺激配合中频电疗(MFE)对椎动脉型颈椎病(CSA)的治疗作用.方法:CSA患者300例,随机分为观察组和对照组各150例,2组均给予药物对症支持治疗,观察组加用脑仿生电刺激配合MFE.治疗前后采用经颅多普勒(TCD)检测基底动脉(BA)、椎动脉(VA)、大脑中动脉(MCA)、大脑前动脉(ACA)平均血流速度.结果:治疗2周后,观察组BA、VA、MCA及ACA平均血流速度均较治疗前及对照组治疗后明显增快(P<0.05),对照组治疗前后比较差异无统计学意义.治疗后及6个月后随访,2组临床疗效比较,观察组总有效率均明显高于对照组(P<0.01).结论:脑仿生电刺激配合MFE对CSA患者有明显的治疗作用,可有效缓解眩晕等临床症状.%Objective:To observe the curative effectiveness of the brain bionic electrical stimulation in combination with medium frequency electrotherapy (MFE) on cervical spondylosis of vertebral artery type (CSA). Methods; Three hundreds CSA patients were randomly divided into observation group and control group (n = 150 each group). Both groups were given drug administration. The patients in observation group were given the brain bionic electrical stimulation combined with MFE additionally. Before and after treatment, transcranial Doppler (TCD) was used to measure mean blood flow velocity of basilar artery (BA) , vertebral artery (VA), middle cerebral artery (MCA) and the anterior cerebral artery(ACA). Results; After treatment for 2 weeks, the mean blood flow velocity of BA,VA, MCA and ACA in observation group was significantly increased as compared with pretreatment and control group after treatment(P<0. 05). There was no significant difference of the mean blood flow velocity in the control group before and after treatment. During a follow-up period of six months, the overall clinical effective rate in observation group was significantly higher than in control group (P<0. 01). Conclusion;The brain bionic

  13. 基于改进人工势场的采摘仿生机械手设计和仿真研究%Design and Simulation of Bionic Picking Manipulator Based on Improved Artificial Potential Field

    Institute of Scientific and Technical Information of China (English)

    陈东凤

    2017-01-01

    It presents an application to fruit picking robot execution for bionic manipulator , and designs bionic robot fin-ger joints micro motor coordinated control , virtual shaft system , which improves the picking robot finger joint flexibility , reduces the fruit picking robot picking the damage to the fruit in the process .According to traditional motor artificial po-tential field controller , it is difficult to meet the load disturbance caused by multi motor real-time synchronous operation . The adjacent attraction is the artificial potential field of multi motor synchronous control method .Through the interaction of adjacent motor , each motor cooperative work and reduce the load disturbance for bionic robot finger in coordination of interference .The results show that the artificial potential field model can effectively improve the follow the finger angle er-ror with high efficiency response , and it can be error can be reduced to a minimum in a shorter period .The picking process is with the help of finger coordination of research on virtual simulation .The simulation results show that the im-proved artificial potential field to control the numerical difference of the angular velocity of the model of three fingers is smaller , the three fingers are in good synergy , which can meet the requirements of the control collaborative design .%提出了一种应用于水果采摘机器人末端执行器的仿生机械手,并设计了仿生机械手指关节微电机的协同控制虚拟总轴系统,提高了采摘机器人手指关节的灵活性,降低了水果采摘机器人采摘过程中对果实的损伤。针对传统的电机人工势场控制器难以满足由负载扰动引起的多电机实时的同步运转,提出了具有相邻吸引力的人工势场多电机同步控制方法,通过相邻电机的相互作用,使各个电机协同工作,降低了负载扰动对于机械仿生手指动作不协调的干扰。对采摘机械仿生手各手指关

  14. A Bionic Imaging Platform Based on Multi-axis High-response Linear Drive%一种基于多轴高响应直线驱动的仿生视觉平台

    Institute of Scientific and Technical Information of China (English)

    余文勇; 金炜; 艾武

    2011-01-01

    根据自主视觉导引机器人(如无人驾驶、自动导航、机器手作业和空间探测等)在复杂场景下因颠簸、振动、坡度变化、离焦和目标快速移动造成成像不理想甚至失去对目标的跟踪问题,提出了一种自主机器人仿生视觉平台.该平台仿照人眼运动机理,通过多轴直线电机驱动模型可对目标物体进行随动跟踪.与传统仿生视觉平台不同,直线电机高响应性的特点不仅可以提供更快更精确的追踪效果,而且有能力应对外界干扰并进行快速响应.为自主机器人智能追踪系统提供了关键基础部件的设计原理和方法.%This paper intends to present a stable imaging platform for the visual system of autonomous robot,aiming at improving the non- optimal quality of image which is caused by tremor,vibration,slope alteration as well as rapid movement of the target during the moving process in intricate circumstances. According to the mechanism of human optical system,a bionic imaging platform driven by multi - axis linear motors is given, in which the function of swift tracing is integrated.Moreover,a better tracking effect and capacities of anti- interference can be available due to the high response of linear motor when comparing to the traditional bionic eye. This research also contributes fundamental approaches to the framework designs of the visual system of autonomous robot.

  15. Technical Condition Optimization of Semi-bionic Extraction for Kanggan Liyan Syrups by Uniform Design%均匀设计法优选抗感利咽糖浆半仿生法提取的工艺条件

    Institute of Scientific and Technical Information of China (English)

    杨洋; 黄良永; 杜士明; 杨光义

    2015-01-01

    Objective: To optimize the conditions of semi-bionic extraction for Kanggan Liyan syrups. Methods: The samples were extracted by water with different pH values under the same conditions of formula composition and dosage, extraction temperature, filtration method, water voulme, centrifugal time and concentration multiple. The best conditions of the semi-bionic extraction for Kang-gan Liyan syrups were screened by uniform design with the content of forsythoside A, polydatin, baicalin and emodin and the dried ex-tract weight as the indices. Results:The best technical conditions were as follows:the pH value of water for the 1st, 2nd and 3rd de-coction was 4. 9, 7. 5 and 9. 0, respectively, and the total extraction time was 2h. Conclusion:According to the industrial production conditions, the pH value of water for the 1st, 2nd and 3rd decoction is 5. 0, 7. 5 and 9. 0 with the extraction time of 1h,0. 5h and 0. 5h, respectively.%目的::优选抗感利咽糖浆的半仿生提取条件。方法:采用均匀设计法,在处方组成和用量、煎提温度、煎提用水量、过滤方法、离心时间、浓缩倍数等条件相同的情况下,用不同pH的水溶液提取方药,以连翘酯苷A、虎杖苷、黄芩苷、大黄素的含量及干浸膏的得率为指标,经过标准化处理,综合评价,优选该方药半仿生提取的工艺条件。结果:最佳的提取工艺为三煎用水的pH值依次为4.9、7.5、9.0,三煎总时间为2 h。结论:结合生产实际,确定三煎用水的pH值依次为5.0、7.5、9.0,3煎提取时间依次为1.0 h、0.5 h、0.5 h。

  16. 均匀设计优化荷叶半仿生提取工艺%Optimization of Semi-Bionic Extraction Process of Lotus Leaf by Uniform Design

    Institute of Scientific and Technical Information of China (English)

    郑丹丹; 刘丽娜; 王京龙; 王占一; 邓艳美

    2016-01-01

    Uniform design was used to optimize semi-bionic extraction( SBE)process of Lotus leaf. The optimum process conditions of semi-bionic extraction of Lotus leaf were studied with total flavonoids and dried extract weight as the index. Be-sides,effects of the pH value and extraction time of the three-time extraction were investigated. Spectrophotography method was conducted to determine the content of total flavonoids. Combined with the industrial production practice,the optimal ex-traction process was as follows:pH value of water in the three-time extraction was 3. 5,6. 5 and 9. 0,with the extraction time of 2. 0 h,1. 5 h and 1. 5h,respectively. The obtained method was easy and simple to operate and the extract rate of total fla-vonoids was relatively high,which provided a theoretical basis for the extraction optimization of Lotus leaf.%采用均匀设计法优选荷叶半仿生提取的最佳工艺条件.本研究以荷叶主要有效成分总黄酮得率以及干浸膏得率为评价指标,对荷叶的半仿生提取工艺条件进行优选,考察三煎pH、提取总时间对荷叶总黄酮提取率的影响,采用分光光度法测定总黄酮的含量.通过优化实验并结合生产实际,确定荷叶半仿生提取的最佳工艺为3煎pH依次为3.5、6.5、9.0,3煎时间依次为2.0 h、1.5 h、1.5 h,所得荷叶总黄酮的提取率为9.7﹪.本法操作简便,提取率较高,为荷叶总黄酮提取工艺的改进提供了理论依据.

  17. 仿生学原理在空间可展开薄膜结构领域的研究进展%A Review of Bionic Design in Deployable Membrane Structures

    Institute of Scientific and Technical Information of China (English)

    杨延蕾

    2015-01-01

    空间可展开式薄膜结构以其大口径、易折叠、质量轻、压缩比高、制作成本低、展开可靠性高等优势已成为未来大型空间可展开结构的理想选择。如何将仿生学原理引入空间可展开薄膜结构的研究中,以解决现有空间可展开薄膜结构在型面精度控制、三维折叠优化、展开过程平稳性控制以及薄膜刚化等方面的不足,现已成为国内外学者关注的研究热点。综述了近年来国内外同行在仿生薄膜可展开结构方面的最新研究进展,重点关注了以下三个方面:(1)薄膜结构在折叠方式及展开过程方面的仿生学研究成果;(2)花瓣绽放的形态学变化在降低能耗、优化折叠尺寸方面的仿生学应用;(3)昆虫羽化在结构刚化、薄膜单元形态学分布以及展开驱动力等方面的应用研究。%With the advantages of large aperture, easy folding, light weight, high contraction ratio, high reliability, de-ployable space membrane structure technology has been the ideal choice of the future large deployable structures in space. Bio-inspired deployable membrane structure is developed by many domestic and international scholars for solving a series of technical challenges such as shape precision control, three-dimensional folding optimization, stability control in deployment process and membrane structure rigidization. In this paper, the advances in relevant researches of bionics in deployable membrane structures are reviewed and three aspects are focused as follows: the developments of new fold patterns and de-ployment of thin membrane structures that are genuinely biomimetic, applications of geometric and morphological optimiza-tion from flowers bloom for energy consumption and size reducing, and the bionic research progress in structure rigidization, membrane cell morphology and deployable driving force from the eclosion process of insects.

  18. Design and Simulation of Bionic MEMS Navigation Sensor Based on Moths' Antennae%基于飞蛾触角的仿生MEMS导航传感器的设计与仿真

    Institute of Scientific and Technical Information of China (English)

    唐军; 刘尧; 刘俊; 郭浩; 石云波; 张贺; 温涣飞; 赵锐

    2012-01-01

    以飞蛾触角导航为仿生依据,通过建立其导航数学模型,利用MATLAB对该模型的导航原理进行仿真分析,结合仿生学,设计了一种新型MEMS 三维角速度传感器模型,并对该传感器的加工工艺进行了设计,该传感器主要由折叠梁和坡莫合金棒组成,通过ANSYS分析,在9V驱动电压的作用下,合金棒沿X、Y的振动幅度可达到80μm,通过理论计算,由偏航角速度产生的哥氏力为0.908×10-8N/(°·s-1),由翻滚和俯仰角速度产生的哥氏力为0.18×10-9 N/(°·s-1).%Based on bionic antennae navigation,a Mathematical model of navigation was established. The navigation principle of its model was analyzed with MATLAB. Combined with bionics, a novel MEMS sensor measuring three-dimensional angular rate was designed. A fabrication process method of the novel MEMS sensor was presented. The structure of the sensor mainly composed of folded beams and permalloy rod. By ANSYS analysis, the vibration amplitude of the permalloy rod along the X and Y axis can reach 80 μm, when the drive voltage is 9 V. Through theoretical calculations,the Coriolis force generated by azimuth rate is 0. 908×l0-8 N/(o·S-1) ,and Coriolis force produced by the roll and pitch rate is 0. 18×10-9 N/(°·s-1).

  19. 电磁防护仿生原理与故障自修复机制研究%Study on principle of electromagnetic-proof bionics and fault-restore mechanism

    Institute of Scientific and Technical Information of China (English)

    原亮; 满梦华; 常小龙

    2014-01-01

    借鉴生物神经网络信息传递的抗扰特点,开展了电磁干扰环境下通过仿生方式进行的电子电路抗扰与防护研究,以便采用新原理、新技术和新方法解决传统的电磁干扰防护手段不足的问题。通过基于布尔模型的复杂生物网络拓扑建模与简并特征分析,证明了网络简并性与功能鲁棒性之间的相互作用关系,以解决抗扰原理问题;通过构建基于神经元电路和可塑突触电路的神经网络电路模型,分析了突触权重的分布对于网络自修复特性的影响,以解决防护机制问题。进而,为电磁防护仿生原理及自修复机制的深入研究形成了一定的理论基础并完成了前期实践。%As we borrowed the wisdom from biological neural system,the characteristic of interference-proof in information transferring process has been carefully studied. Our study in-cludes the response of electrical-interference-proof circuit in electromagnetic environment,by means of bionics redesign. By doing so,new principles,new technics and new ways are adopt-ed to solve the unavoidable situations in traditional electromagnet protection design. The com-plex bionic topological networks based on Boolean model were firstly built and the charactoristic of degeneracy were analyzed,then the bidirectional actions between degeneracy in networks and the robustness of functions were proved in order to fill the gap to deal with the need of inter-ference-proof. Based on the creation of the neuron networks and the electrical synapses in char-acter of plasticity,the effective of the distribution in the weight of synapse to the character of network self-restoration was studied afterwards so that the corresponding mechanism could be defined. In this way,the research laid a theoretical foundation for electromagnetic protection and the self-restoration.

  20. 应用鱼骨图改善脑电仿生电刺激仪疗效的效果观察%Effect of fishbone diagram on improving curative effect of eeg bionic electrical stimulator

    Institute of Scientific and Technical Information of China (English)

    方丹灵; 金爱萍

    2015-01-01

    Objective:To improve the effect of eeg bionic electrical stimulator.Methods:From January to March 2014 into the standard 40 patients as control group,from April to June in 2014 patients included in the standard set for experimental group,two groups respectively by routine method,draw the fishbone diagram proposed rectification method after treatment using eeg bionic electrical stimulator,and the number of treatment time,every day,every time,period of treatment were the same.To evaluate the patients before and after the treatment respectively used MAS score method,the Barthel index,compared the re-sults.Results:The experimental group score of MAS and Barthel index were higher than the control group,the difference was statistically significant (P <0.05).Conclusion:The fishbone diagram is helpful to improve the therapeutic effect of brain dysfunction.%目的:提高脑电仿生电刺激仪疗效。方法:将2014年1~3月符合纳入标准的40例患者设为对照组,2014年4~6月符合纳入标准的40例患者设为试验组,对照组采用常规方法,试验组采用绘制鱼骨图后提出的整改方法使用脑电仿生电刺激仪进行治疗,两组每次治疗时间、每天治疗次数、疗程均相同。两组分别在治疗前后采用MAS评分法、Barthel指数对患者进行评估,比较结果。结果:试验组患者MAS评分、Barthel指数评分均高于对照组(P<0.05)。结论:鱼骨图有助于提高脑电仿生电刺激仪疗效。

  1. 基于仿生色彩对福建高校校园铺地色彩设计的探讨%Discussion about Pavement Color Design in Fujian University Campus based on Bionic Color

    Institute of Scientific and Technical Information of China (English)

    刘仁芳

    2013-01-01

    The colors of University Campus have important significance for inheriting campus culture and building a harmonious environment. After practice investigation and research, the article discusses discussed the application of bionic color in the pavementcolor design of Fujian university campus, put forward that biological color image and its style can be used in the pavement color design of Fujian university campus after been scientific integrated and designed.%  高校校园色彩对传承校园文化,营造和谐校园环境具有重要意义。通过调查研究,探讨仿生色彩在福建高校校园铺地色彩设计中的应用,并提出把生物色彩形象和生物色彩形式经过科学的整合与设计应用到福建高校校园铺地色彩设计当中。

  2. 从仿生视角研究旧城区空间形态更新机制%Research of Update Mechanism of Old City Space Form from the View of Bionics

    Institute of Scientific and Technical Information of China (English)

    王浩然

    2014-01-01

    This paper, from the view of bionics angle, draws lessons from the growth characteristics of organism, puts for-ward new supersedes regulation, self-organization and hetero organization coordination and mutual adaptation of the old city district functions and forms of space form of update mecha-nism, in order to bet er understand the decline of old city sp-atial form phenomenon. Final y, the author proposed update ideas.%本文从仿生的角度出发,借鉴有机体生长特性,提出了新陈代谢调节、自组织与他组织配合以及功能形态互适的旧城区空间形态更新机制,以期更加深入地理解旧城区空间形态衰落的现象。最后,提出了更新的思路。

  3. 智能仿生玻璃清洁机器人造型设计及功能配置%Modeling Design and Function Configuration of Intelligent Bionic Glass-cleaning Robot

    Institute of Scientific and Technical Information of China (English)

    邵翌鑫

    2016-01-01

    A type of intelligent bionic glass-cleaning robot, Spider Crab, has been designed to deal with the dangers and difficult operation issues during the aerial glass cleaning work.The overall style design and function configuration are arranged by using the research results of robots and the possible problems occurred during the aerial glass cleaning are analyzed.This robot is equipped with self-charging,cleaning selection,multi-protection and some other functions,it has an extensive application range and high adaptability.%针对高空玻璃清洁作业中存在的危险性高、操作困难的问题,设计了一款智能仿生玻璃清洁机器人Spider Crab.在分析高空玻璃清洁过程中可能出现的问题,借鉴有关机器人研究成果的基础上,进行了机器人整体造型设计及功能配置.该机器人具有自我充电、选择清洁、多重保护等功能,应用范围广,适应性强.

  4. Jamming of fingers: an experimental study to determine force and deflection in participants and human cadaver specimens for development of a new bionic test device for validation of power-operated motor vehicle side door windows.

    Science.gov (United States)

    Hohendorff, Bernd; Weidermann, Christian; Pollinger, Philipp; Burkhart, Klaus J; Müller, Lars Peter

    2013-02-01

    The deformability of human fingers is central to addressing the real-life hazard of finger jamming between the window and seal entry of a power-operated motor vehicle side door window. The index and little fingers of the left hand of 109 participants and of 20 cadaver specimens were placed in a measurement setup. Participants progressively jammed their fingers at five different dorsal-palmar jam positions up to the maximum tolerable pain threshold, whereas the cadaver specimens were jammed up to the maximum possible deflection. Force-deflection curves were calculated corresponding to increasing deflection of the compressed tissue layers of the fingers. The average maximum force applied by the participants was 42 N to the index finger and 35 N to the little finger. In the cadaver fingers, the average of the maximum force applied was 1886 N for the index finger and 1833 N for the little finger. In 200 jam positions, 25 fractures were observed on radiographs; fractures occurred at an average force of 1485 N. These data assisted the development of a prototype of a bionic test device for more realistic validation of power-operated motor vehicle windows.

  5. Rational, Organic, Ecological:Research on the Thought of Bionic during the Western Urban Planning Development Process%理性·有机·生态--西方城市规划发展历程中的仿生思维研究

    Institute of Scientific and Technical Information of China (English)

    孔俊婷; 王浩然

    2015-01-01

    Taking the natural organism as basic object, bionic thought is a way to recreate with the growth mechanism and functional form of the organisms. Based on the contrast and analysis about typical theories and cases, the article analyzes the relationship between the bionic thought and western urban planning, then makes the conclusion that while western urban planning concept changes from rationalism oriented to organism and ecologism, the view of bionic thought also improves from mechanical imitation to integrated-organic view of cities and eco-friendly concept of development. It has important reference and guiding significance for the study on the urban and rural planning during the process of current urbanization development in our country.%仿生思维是以自然界中的有机体为基本对象,以其生长机理和功能构成为主体进行再创造的一种思维方式。本文通过对典型理念和案例的剖析比对,分析研究了仿生思维与西方城市规划之间的关系,揭示出在西方城市规划理念由理性主义为主导向有机主义和生态主义观念演变的过程中,仿生思维由最初的机械模仿逐渐上升为动态有机的城市观和生态可持续的发展观。这对我国当前城镇化发展进程中的城乡规划研究具有重要的借鉴和指导意义。

  6. Research and Application of Key Technique for Mechanized Royal Jelly Production(III)---Supporting Breeding Technology with Honeybee Colony Breeding for Bionic Non-grafting Larvae Royal Jelly Production%蜂王浆机械化生产关键技术研究与应用(Ⅲ)--仿生免移虫生产蜂王浆的蜂群配套饲养技术

    Institute of Scientific and Technical Information of China (English)

    张飞; 吴小波; 颜伟玉; 王子龙; 曾志将

    2013-01-01

    For the sake of popularizing and applying the“bionic non-grafting larvae technique for royal jelly production”to apiculture production better and faster ,the authors put forward a set of honeybee breeding technology matching the“bionic non-grafting larrae technique for production of royal jelly”based on years ’ pro-duction practice .That is a series of supporting honeybee breeding technology including building comb on the hollow comb foundation ,organizing spawning group and the processes of bionic non-grafting larvae royal jelly production .The successful application of the “bionic non-grafting larvae technique for royal jelly production”will lay the foundation for large-scale royal jelly production .%为使“仿生免移虫蜂王浆技术”更好更快地推广应用于养蜂生产中,经过多年生产实践,提出与“仿生免移虫生产蜂王浆技术”相配套的蜂群饲养技术,即对空心巢础造巢脾、产卵群的组织及仿生免移虫生产蜂王浆步骤等配套蜂群饲养技术。仿生免移虫蜂王浆生产技术的成功应用,将为我国蜂王浆生产规模化奠定基础。

  7. Study of Dynamics Characteristics for Bionics Fingers of Self-Adaptive Flexible Fixture Based on AMESim%基于AMESim的自适应柔性夹具机械手指的动态特性研究

    Institute of Scientific and Technical Information of China (English)

    向琴; 罗天洪; 孙冬梅; 李德山

    2012-01-01

    The self-adaptive flexible structure hydraulic-driven clamp was proposed. According to the working principle and the structure parameters of the driving system, a mathematical motel of the driving system was established and a simulation model of electro-hydraulic proportional closed-loop control system based on AMEsim was also established. The effect on the dynamic characteristics of bionics fingers from the K and PID controller were analyzed and studied. The results demonstrate that there is an optimum value K, which has a significant impact on dynamic and static characteristics of the system; and the accuracy and stability of the system are improved obviously after joining the PID controller.%提出了一种基于液压驱动的仿手指自适应柔性夹具结构,根据其驱动系统工作原理及结构参数,建立了驱动系统的数学模型,及基于AMESim电液比例闭环控制系统的仿真模型;研究了放大比例增益值(K)对系统动态特性的影响,及PID控制器对机械手指动态特性的影响.结果表明:存在一个最佳K值,对系统的动、静态特性影响显著;加入PID控制器后,系统的精度和稳定性可得到明显改善.

  8. Simulation and Analysis of Bionic Robo-Fish Swing Model Based on Fluent%基于Fluent的仿生机器鱼胸鳍摆动模型仿真分析

    Institute of Scientific and Technical Information of China (English)

    冯静安; 晁贯良; 王卫兵; 牛建文; 邱艳军

    2014-01-01

    To research the influence of attack angle on the bionic robo-fish in dive motion,the robo-fish dive motion control rules was made,the lift with generation mechanism and influence factors was analyzed,and the swing model of pectoral fin was estab-lished. According to the geometry model of pectoral fin,the pectoral fin of robo-fish two-dimensional grid model was established by ap-plying the software of Gambit. And applying Fluent software simulation,the robo-fish lift and resistance difference under different at-tack angle was analyzed,the pectoral fin optimal angle of attack is about 20° at flow velocity of 0.5 m/s in hydrodynamic environment with doing periodic swing was determined.%为研究胸鳍攻角对仿生机器鱼升潜运动的影响,制定机器鱼升潜运动控制规则,分析了升力产生的机制和影响因素,建立了机器鱼胸鳍摆动数学模型,根据机器鱼胸鳍几何模型,应用Gambit建立了机器鱼胸鳍二维网格模型,应用Fluent仿真,分析了不同攻角下机器鱼升力阻力差,确定胸鳍在来流速度为0.5 m/s的水动力环境下做周期摆动时的最佳攻角为20°左右。

  9. Algorithm for Texture Image Generation Based on a Bionic Model of Olfactory Neural Networks%基于嗅觉神经网络仿生模型的纹理图像生成算法

    Institute of Scientific and Technical Information of China (English)

    张锦; 李光; WALTER J Freeman

    2008-01-01

    提出了一种基于嗅觉系统生成纹理图像的仿生模型.该模型结构模拟嗅觉神经网络的结构.利用Logsitic函数的混沌特性调整每次迭代过程中的模型参数,使用简单的周期函数作为模型节点的激活函数实现纹理的重复,并引入随机噪声来模拟脑在进行信息处理时的背景噪声.实验结果表明,该模型可以生成丰富而多变的纹理图像,引入的随机噪声也起到了积极的作用,可以明显地丰富纹理图像的变化.此外,模型生成纹理图像的效率也高于传统的BP神经网络模型.%This paper presents a novel bionic model based on olfactory systems to generate texture image. The model simulates one of the oLfactory neural networks. The chaotic characters of Logistic function are used to adjust the parameters of model during iteration. A simple periodic function is used as the activation function of node in the model to generate periodic texture. And a random noise is introduced to simulate the background noise of brain when processing information. The experimental results show that the model can generate plentiful and muhivariant texture images. The introduced random noise plays an important role and enriches the variety of texture images obviously. In addition, the model efficiency to generate texture image outperforms the conventional back propagation neural network model.

  10. 无丝3D打印技术常温构建仿生人工骨支架的研究%Fabrication of a bionic artificial bone scaffold using a room temperature three dimensional printing technique

    Institute of Scientific and Technical Information of China (English)

    林楷丰; 何树; 宋岳; 王铮; 毕龙; 裴国献

    2016-01-01

    目的 应用无丝3D打印技术常温构建基于胶原/羟基磷灰石的仿生活性人工骨支架,探讨该支架对骨髓基质干细胞(BMSCs)的体外生物学作用. 方法 利用无丝3D打印技术在常温条件下基于胶原/羟基磷灰石原料打印仿生活性人工骨,分析支架的物理化学结构,测量其孑隙率和力学强度,评估材料浸提液的细胞毒性.实验分为3组(n=3):空白对照组(无材料),打印支架组,非打印支架组.扫描电镜和免疫荧光观察BMSCs在材料的黏附情况,3-(4,5-二甲基噻唑-2)-2,5-二苯基四氮唑溴盐(MTT)法和扫描电镜评价BMSCs在材料上的增殖情况.通过检测碱性磷酸酶活性和成骨相关基因的表达评价支架对细胞的促成骨作用. 结果 本实验制备的三维支架孔径可控、大小均一,孔道相互联通,支撑材料横剖面为不规则的蜂窝样结构.打印支架的孔隙率(71.14%±2.24%)显著高于非打印支架(59.04%±2.98%),差异有统计学意义(P<0.05).打印过程基本保留了材料本身的物理化学结构,不会产生细胞毒性.MTT结果显示:支架种植细胞后7、14 d时打印支架上的吸光度值显著高于非打印支架,差异均有统计学意义(P<0.05).电镜结果显示细胞可良好黏附于打印支架,并沿着支架的联通通道增殖、迁移.成骨实验检测显示支架有显著性的促成骨作用. 结论 常温无丝3D打印胶原/羟基磷灰石支架可在体外提供良好的环境供BMSCs黏附,并促进其增殖及成骨分化.%Objective To prepare a bionic artificial bone scaffold using a room temperature three dimensional (3D) printing technique and evaluate its biocompatibility and bioactivity in vitro.Methods A room temperature 3D printing technique was applied to fabricate 3D bionic artificial bone scaffolds using collagen/hydroxyapatite.The physico-chemical structure,porosity and mechanical strength of the scaffolds were assessed.The extract liquid of

  11. 具有仿生条纹结构的内燃机活塞疲劳特性回归分析%Regression analysis of fatigue property of internal combustion engine piston with bionic stripe structure

    Institute of Scientific and Technical Information of China (English)

    吴波; 丛茜; 杨利; 刘洋; 金绍江; 王洪臣; 刘鸿涛; 田为军

    2016-01-01

    were got. Then we could observe the stress, strain and deformation of piston from coupled thermo-mechanical analysis results. Second, most animals have evolved and formed non-smooth surface, which can reduce drag and resist wear. The soil animal earthworm is one of the perfect animals, which has non-smooth surface. It shuttles back and forth in the soil, which was just like piston doing reciprocating motion in air cylinder. We copied stripes and holes from earthworm and enlarged them. The enlarging scale was decided according to piston size. Then the stripes and holes on the piston skirt were processed. The bionic piston could resist attrition and heat dissipation, and increase fatigue life. The coupled thermo-mechanical analysis results of standard piston showed that the stress of perfective aspect of piston was non-uniform. The stress was concentrated on the piston top and the third ring groove, and the maximum deformation was at the bottom of piston skirt. So this design made depth, width and space of stripe variable size. For the stripe, the closer to the top of piston, the larger the depth, width and space between columns. There were 8 stripes on the skirt from top to bottom, and every adjacent 2 stripes had the same size (1 and 2, 3 and 4, 5 and 6, 7 and 8). Third, the three-level and three-factor orthogonal array was used, and 9 testing programs of bionic pistons were made. The first factor was stripe distribution pattern, and it included 3 levels which were stripe distribution, drilling in stripe and a line of stripe with a line of bore. The second factor was stripe depth, and it included 3 levels which were A (0.8, 0.7, 0.6 and 0.5 mm), B (0.9, 0.8, 0.7 and 0.6 mm) and C (1, 0.9, 0.8 and 0.7 mm). The third factor was stripe width, and it included 3 levels which were I (0.8, 0.7, 0.6 and 0.5 mm), II (0.9, 0.8, 0.7 and 0.6 mm) and III (1, 0.9, 0.8 and 0.7 mm). The coupled thermo-mechanical analysis was carried out on 9 bionic pistons. Three typical indices that

  12. Bionics Sensing Intelligent Sensor Detection Technology and Its Application in Yunnan Characteristics Agricultural Products Quality Detection%仿生传感智能感官检测技术及其在云南特色农产品品质检测中的应用

    Institute of Scientific and Technical Information of China (English)

    许文方; 张海东; 李贵荣; 杨丽祥

    2013-01-01

    The concepts of machine vision technology,electric smell technology,electric taste technology three bionics sensing intelligent sensor detection technology were introduced,their function,features and application in Yunnan cured tobacco,Pu' er tea,herbal medicines and cut flowers were elaborated.The existing problems in application of bionics sensing intelligent sensor detection technology in quality detection of Yunnan characteristics agricultural products were analyzed.%介绍了机器视觉技术、电子嗅觉技术和电子味觉技术3种仿生传感智能感官检测技术的概念,阐述了其功用、特点及其在云南烤烟、普洱茶、中药材和鲜切花品质检测中的应用,同时分析了仿生传感智能感官检测技术用于云南特色农产品品质检测还存在的问题.

  13. Bionic energy system based on an air breathing chemoelectric converter (fuel cell) with biomass-derived glucose as hydrogen transfer medium and assessment of renewable glucose production; Bionisches Energiesystem auf der Basis eines luftatmenden chemoelektrischen Wandlers (Brennstoffzelle) mit Glucose aus Biomasse als Wasserstoffuebertraeger sowie Abschaetzung des Potentials an nachwachsender Glucose

    Energy Technology Data Exchange (ETDEWEB)

    Radebold, R.; Radebold, W.

    2001-07-01

    The fundamental principles and thermodynamics of the biological energy system as well as the role of glucose and H{sub 2}O{sub 2} in the photosynthesis and breathing processes are briefly explained. Transposition of the principles in a bionic energy system is discussed, and resulting engineering aspects and advantages of a bionic energy system based on renewable biomass-derived glucose are shown and compared with conventional energy systems based on fossil fuels. The potential of inland production of suitable biomass is assessed. (orig./CB) [German] Funktion und Thermodynamik des biologischen Energiesystems sowie die Rollen von Glucose und H{sub 2}O{sub 2} in Photosynthese und Atmung werden kurz erlaeutert, ueber die Umsetzung dieser Prinzipien zu einem bionischen Energiesystem wird berichtet. Technische Konsequenzen und Vorteile eines bionischen Energiesystems mit Glucose aus nachwachsender Biomasse werden im Vergleich zum heutigen technischen Energiesystems mit fossilen Brennstoffen eroertert. Eine Schaetzung des heimischen Potentials an nachwachsender, fuer diese Zwecke geeigneter Biomasse wird vorgelegt: rund die Haelfte der heutigen Nutzenergie koennte ueber ein bionisches Energiesystem bereitgestellt werden. (orig.)

  14. Simulation and experiment of badger claw toe bionic excavator bucket tooth for improving performance of digging and cutting%挖掘机獾爪趾仿生斗齿提高其入土性能仿真与试验

    Institute of Scientific and Technical Information of China (English)

    马云海; 裴高院; 王虎彪; 吕雪漫; 宋国风; 佟金

    2016-01-01

    In order to solve the problems of high resistance and fracture in excavator bucket tooth, a bionic excavator bucket tooth was designed. Bucket tooth is assembled in the bucket tip, which is an important component of excavator, and its performance directly impacts the performance of bucket and even excavator. The bucket tooth is prone to abrasive wear during the operation, which could result in the reduction of cutting capacity. Improvement of bucket tooth configuration is one of the methods to improve the performance of bucket tooth. In this paper the badger was selected as the research object. Badger is a mammal, which is distributed in most parts of Europe and Asia. Badger is good at digging and it is a kind of burrowing animal. Badger owns slender and bending front claws, which are a powerful tool for digging. Therefore, by inspiration of that, the claws could provide a good bionic prototype for the design of bucket tooth. All of the following experiments were finished in the Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University. Handheld three-dimensional (3D) scanner (Handyscan700, Canada, Creaform company) was used to obtain the 3D point cloud of badger claw toe. This experiment was carried out in April 15, 2015. Due to the darker surface of badger claw toe, the toe had been sprayed with a layer of white power to enhance the results before scanning. The scanning results were imported into the reverse engineering software (Geomagic), and the contour curve of the longitudinal section of the badger claw toe was obtained through a series of processing. Then, the curve equation of the inner surface and the outer surface of the badger claw was obtained by curve fitting. Taking 80 type bucket tooth as a reference, the curve equations were applied to the design of bionic bucket tooth, and the bucket tooth model was established by utilizing the curves. Finite element analysis software (Abaqus) was implemented to analyze the mechanical

  15. Self-adaptive Bionic Legs and the Way of Walking Self-switchable Vehicle%具有自适应性仿生腿及行走方式可切换式汽车

    Institute of Scientific and Technical Information of China (English)

    王棋; 刘群

    2016-01-01

    高性能移动机器人主要用于灾难搜救、星球探测、军事侦察、矿山开采等非结构化环境中,其移动系统可分为轮式、腿式、履带式以及轮腿结合式4类。其中,轮腿式机器人不仅具备腿式机器人的高越障性能和对复杂地形的高适应性能,还兼备轮式机器人在平整地面上滚动的高速高效性能。具有自适应性仿生腿及行走方式可切换式汽车综合了轮式系统和腿式系统的优势,具备多种运动姿态,包括滚动、攀爬楼梯等,具有运行平稳、带负载能力强以及越障性能好的优点。可作为移动机器人平台搭载相关设备完成星球探测、军事侦察、扫雷排险等多种工作。%Autonomous robots have many potential applications like farming, exploration, investigation and waste lean-up, based on their well-designed locomotion system. Wheel-legged rover is a typical hybrid mobility system, inherits both advantages of wheeled and walking systems, i.e. the high-speed and efficient rolling performance for the first one; and the obstacle clearance performance as well as high adaptability to rough terrains for the second. The self-adaptive bionic legs and the way of walking self-switchable vehicle have many potential applications, including geological investigation, space exploration, military reconnaissance, defense, demining, etc.

  16. Design of intelligent lower limb knee-ankle flexible bionic control device%人体下肢膝-踝关节智能仿生控制装置设计

    Institute of Scientific and Technical Information of China (English)

    董彩; 薛召军

    2011-01-01

    为使人体下肢假肢尽可能接近正常人的步态行走模式,设计了以数字信号处理器(DSP)为控制核心的下肢假肢膝-踝关节柔性仿生控制装置,以便改善下肢假肢的功能性、灵活性与可用性;设计采用生物电传感器采集患者下肢残段的生物电信号,同时检测速度及加速度传感器的信息,经多通道信号运算放大滤波后,进行模数转换,将数字信息输入DSP微处理器进行步态分析与决策,DSP输出的PWM信号对电机进行控制,进而控制假肢的膝-踝关节的全时相角度、力学及运动学参数。%In order to make artificial lower limbs of human body as close as possible to the normal gait pattern, the lower extremity prosthetic knee and ankle joint flexible bionic control device is designed with the digital signal processor (DSP) as the control core, in order to improve lower limb prosthesis functionality, flexibility and usability. Biological electrode obtains biological signal under section of the patients, and detects the information of acceleration and speed sensor, after the multi-channel signals operation amplifier filtering, analog-to-digital conversion , digital infmznation input DSP microprocessor on gait analysis. PWM signal of DSP output controlls the motor and then outputs control decision-making information, controls the prosthetic knee, ankle phase Angle and force full-time and kinematics parameter, which is of important application prospect and academic value.

  17. Research on dynamics coupling for underactuated bionic kangaroo-hopping robot%欠驱动仿袋鼠跳跃机器人动力学耦合研究

    Institute of Scientific and Technical Information of China (English)

    陈朋威; 葛文杰; 李岩

    2012-01-01

    根据袋鼠的生物结构及运动特点,建立了具有欠驱动关节的仿袋鼠跳跃机器人模型.以此模型为基础,分析系统的主动关节与被动关节之间的加速度耦合效应.采用拉格朗日方方法建立了机构的动力学方程.结合实例,运用Matlab软件对机器人进行仿真分析,给出了机器人全局单关节耦合变化规律.结果表明:仿袋鼠跳跃机器人的踝关节与欠驱动关节间存在足够大的耦合并且通过动力学耦合来控制欠驱动关节的位置是可能的.动力学耦合指标对欠驱动机器人的结构设计和驱动装置位置有重要作用.%According to the biological structure and kinematic characteristics of kangaroo, we establish a model for uniped hopping mechanism of bionic kangaroo with underactuated joint.Based on this model,the dynamic coupling effects of the acceleration coupling between active joints and passive ones are an-alyzed,and dynamics equations are established with adopting lagrange method.Wuh practical example and using Matlab simulation analysis for the robot is made so that the changing rule of the global individual joint coupling are obtained.The result indicates that a large coupling between the ankle joint and underactuated joint of the hopping kangaroo robot is available, thus it is possible to control the position of the under-actuated joint via the dynamics coupling, which index plays an important role in structure design and actuator placement of underactuated robots system.

  18. A Bionic Walking Control for Biped Robot Using Sinusoidal Input and Sensory Feedback%正弦驱动与传感反馈结合的双足机器人仿生行走控制

    Institute of Scientific and Technical Information of China (English)

    王健美; 付成龙; 陈恳; 黄元林

    2009-01-01

    提出了一种正弦驱动与传感反馈结合的双足机器人仿生行走控制方法.所有关节由正弦振荡器驱动,较之相互耦合的神经元振荡器更加简单;控制参数具有明晰的物理意义,便于对运动模式进行调节.传感反馈表征了机器人的运动状态,对于保证机器人的稳定行走起着至关重要的作用.将机器人碰地、碰膝等关键运动状态作为相位反馈,对控制力矩进行相位重置,协调各关节动作,进而实现控制器、机器人、环境的耦合.同时,从节省能量和仿生的角度,考虑了关节运动的被动特性,确定了各关节力矩的作用区间.仿真结果表明,该控制方法能实现机器人稳定行走,并具有良好的能效性和自稳定性.%A bionic walking control strategy for biped robot using sinusoidal input and sensory feedback is proposed. All joints are actuated by sinusoidal oscillator, which is simpler than coupled neural oscillators. Control parameters have clear physical meaning, and it is convenient to adjust walking pattern. Locomotion states of robot are characterized by sensory feedbacks, which play an important role in ensuring stable walking. Some key locomotion states, such as ground impact and knee impact, are used as phase feedback to reset joint torques and coordinate movement of different joints. The coupling among controller, robot, and environment is then realized. The actuating areas of torques are determined considering passive characteristic of joints from the perspectives of saving energy and imitating human beings. The simulation results show that stable walking with favorable energy efficiency and self-stability is obtained using this control strategy.

  19. 液压驱动仿生多足机器人单腿设计与试验%Design and experiment of single leg of hydraulically actuated bionic multi-legged robot

    Institute of Scientific and Technical Information of China (English)

    陈志伟; 金波; 朱世强; 黄翰林; 陈刚

    2016-01-01

    In order to study the influence of the end-effector’s high speed contact with ground on the robot system when the hydraulically actuated multi-legged robot walks in a dynamic gait and realize its control as well, a single leg prototype of the bio-inspired hydraulically actuated multi-legged robot is developed. The robotic leg's structure is designed on the basis of research and analysis of the skeletons of the large dogs' hind limbs. The hip and knee cylinder layout are designed from the principle of rotating guide bar mechanism and swing guide bar mechanism, respectively. The torque of robotic leg's joint on stance phase is calculated on the basis of former biologists’ research results and the planned joint trajectory of dynamic trotting gait on stance phase. The former biologists have already researched the dynamic gait of large dogs and separately measured the ground reaction forces on individual limb of trotting dogs using a series of four force platforms; the dynamic trotting gait trajectory with a speed of 2.5 m/s is planned as composite cycloid foot trajectory on flight phase with the same body height on stance. And the composite cycloid’s foot trajectory is planned with the specifications: the stride length is 1 m, the stride height is 0.05 m, the period is 4 s, and the duty cycle is 50%. Based on the above bionic design, the mechanical parameters of the robotic single leg are determined: the length of thigh and shank is 0.35 m, the hip joint angle range is [-50°, 70°], the knee joint angle range is [-140°, -20°], the diameter of the cylinder piston is 0.02 m, the diameter of piston rod is 0.01 m, and the stroke length of the piston rod is 0.1 m. The virtual prototype of robotic single leg is designed via the three-dimensional modeling software Solidworks according to the design parameters. Furthermore, the feasibility of the parameters of the designed mechanical structure and hydraulic actuator is verified based on the dynamic vertical hopping

  20. 丝胶蛋白对仿生丝素蛋白神经导管的改性研究%The modification research of bionic silk fibroin nerve guidance conduits by silk sericin

    Institute of Scientific and Technical Information of China (English)

    饶建伟; 叶舟; 占蓓蕾; 全大萍; 许扬滨

    2016-01-01

    目的 探索丝胶(SS)蛋白对仿生多通道丝素(SF)蛋白神经导管(NCs)的改性作用. 方法 在丝素蛋白水溶液中按比例加入丝胶蛋白,通过循序冷冻工艺制备丝胶/丝素共混神经导管(SS/SF-NCs),扫描电镜(SEM)观测其通道结构,X线衍射及红外光谱检测其内部分子结构,测量其孔隙率及机械性能,MTT实验量化分析PC12细胞与SS/SF-NCs共培养后的细胞活性,PC12细胞被用于检测从SS/SF-NCs中释放的NGF的细胞活性. 结果 SEM结果显示与SF-NCs相比,SS/SF-NCs具有周围神经束仿生结构的线性化导向的多通道,通道分布均匀呈片状纵向均匀排列,且通道微观结构上发生很大变化,机械性能得到很大提升,通道的壁间距、孔隙率、机械强度随着循序冷冻温度、丝胶比例的不同而变化.MTT试验结果显示SS/SF-NCs的PC12细胞的活性明显好于对照组(P<0.05),从新型SS/SF-NCs中释放NGF释放时间长达4周并保持生物活性.结论通过丝胶蛋白的改性作用,新型SS/SF-NCs具有周围神经束的高度仿生结构,且具有更加优良的机械性能,可以作为人工神经导管的另一选择.%Objective To explore the modification of bionic silk fibroin nerve conduits (SF-NCs) by silk sencin.Methods The innovative SS/SF blended-NCs was fabricated by a vertical sequential cooling thermal induced phase separation (TIPS) processing with SF solution added sericin in proportion,its morphology was observed by Scanning electron microscopy (SEM),X-ray diffraction (XRD) and infrared spectroscopy (FTIR) were used to detect its internal molecular structure.MTT assay was used to quantitatively analyzed the PC12 cells viability co-cultured with the innovative SS/SF-NCs,SEM was used to observe the adhesion and morphology of PC12 cells seeded into the innovative SS/SF,PC12 cells were used to assess the NGF bioactivity released from the SS/SF.Results The SEM results showed that the new fabricated SS/SF-NCs had linearly

  1. Spatial Relationships Among Tourism Destinations Based on Bionics Theory: A Case Study of Xidi and Hongcun villages in Anhui Province%旅游目的地仿生学空间关系研究——以安徽省古村落西递、宏村为例

    Institute of Scientific and Technical Information of China (English)

    徐红罡; 薛丹

    2011-01-01

    旅游目的地之间在多重因素的影响之下,空间关系总会呈现出有别于竞争与合作关系的其他形式。研究了旅游目的地空间关系的生态学解释和旅游生态位概念,在此基础上建立仿生学空间关系数学模型,构建旅游目的地仿生学空间关系研究体系,并将新体系实际应用于案例地西递、宏村,最后得出结论:宏村的整体竞争力水平高于西递,且两村于2006—2007年间达到稳定的竞争状态并一直延续到现在。案例分析证明了旅游目的地仿生学空间关系研究对于旅游规划与管理的理论和实践意义。%In recent years, the researches on the spatial relationship of tourism destinations were halted at three directions : competition, cooperation, and cooperation-competition. However, under the influence of economic, social, and cultural factors, the spatial relationships of tourism destinations always show other different forms. The former relationship classification is so simple that it cannot deal with the complex situations. With a literature review on the domestic and abroad studies, the author found that lots of scholars began to try to explain the relationship in ecological ways. The spatial relationships between two or more destinations are described as competition, predation, symbiosis, and parasitism. " Niche", as ecological terminology, has been introduced into tourism study. The purpose of this study is to apply the bionics theory to the tourism destination and to explore new methodology for the spatial relationships of destinations qualitatively and quantitatively. Thus, this paper is composed by three parts : 1 ) the establishment of the spatial relationship models based on ecological interpretation; 2) the construction of a bionics study approach of spatial relationship among tourism destinations ; and 3 ) the application of the new approach to Xidi and Hongcun villages as a case study. After fieldwork

  2. Mechanism Analysis of Anti-erosion Wear Based on the Bionic Pit Form of Desert Lizard’s Skin%基于沙漠蜥蜴体表仿生凹坑形态的抗冲蚀磨损机理分析

    Institute of Scientific and Technical Information of China (English)

    张雪鹏

    2015-01-01

    According to the scientific theory and logic of biological evolution, this paper analyzed the evolution strategy selection of anti-erosion wear of the desert lizard, and proposed that wind was the major factor and main contradiction of anti-erosive wear. On the basis of the typical pit form extracted from the desert lizard’ s skin, the combined method of numerical simulation and theoretical analysis were used to analyzed the air flow field form of pit surface and explained the anti-erosion wear mechanism of bionic pit form, and also supplemented the anti-erosion wear evolution strategy of desert lizards, which provided a theoretical reference for the engineering bionic design.%根据生物进化的科学理论和逻辑,分析了沙漠蜥蜴抗风沙冲蚀磨损的进化策略选择,并提出了风是风沙冲蚀磨损的主要因素和研究风沙冲蚀的主要矛盾点。在仿沙漠蜥蜴体表形态提取的典型凹坑形态的基础上,采用数值模拟和理论分析相结合的方法,分析了具有凹坑形态表面的空气流场形式,解释了仿生凹坑形态抗冲蚀磨损的机理,补充了沙漠蜥蜴抗风沙冲蚀的进化策略,为工程仿生设计提供了理论参考。

  3. 基于APDL和分层优化技术的高速加工中心工作台的仿生优化%Bionic optimization of high-speed machining center workbench based on APDL and hierarchical optimization techniques

    Institute of Scientific and Technical Information of China (English)

    项菲菲; 李尚平; 李健; 唐满宾; 项忠珂

    2012-01-01

    Aimed at high speed mat-Inning center high mac Inning accuracy and lightweight design require ments, two different stiffened plate structure workbenches are designed, one adopts traditional design method,the other is designed based on the bionics ;Then finite element analysis based on CAD/CAE integration technology is done;Based on APDL and hierarchical optimization techniques,dimensions of stiffened plate of workbench with obvious advantages in bionic design are optimaized to get the optimal size; Through static analyzing and modal analyzing the superiority of the optimization schemes is verified,which provide guidance for practical product ion.Through simulating,arranging,analyzing and refining the excellent properties oj biology, a new design of thinking method similar with biological features is designed.%针对高速加工中心高加工精度和轻量化的设计要求,设计了两种有不同筋板结构的工作台,一种采用传统设计方法,另一种基于仿生学的设计;基于CAD/CAE一体化技术对其进行有限元分析;基于APDL和分层优化技术对优势明显的仿生设计工作台的筋板的尺寸进行了优化,得到了筋板的最优尺寸;通过静态分析和模态分析验证了优化方案的优越性,为实际生产提供指导,通过对生物优异特性的模拟、整理、分析、提炼,从而构思设计出具有类似于生物特征的一种新的设计思维的方法.

  4. System Design and Study on Bionic Eye of Spherical Parallel Mechanism Based on Attitude Closed-loop Control%基于姿态闭环控制的球面并联仿生眼系统设计与研究

    Institute of Scientific and Technical Information of China (English)

    李超; 谢少荣; 李恒宇; 缪金松; 徐元玉; 罗均

    2011-01-01

    An attitude feedback based method for establishing the closed-loop control system of spherical parallel mechanism (SPM) is proposed to circumvent the difficulty caused by the complex, three-dimensional, nonlinear and strongly coupled relationship between the input and output of the mechanism.SPM, then, is employed to the design of bionic eye which emulates the function of human's eye but is bigger than it in size, and incorporates the interface of thesignal of control and video.In addition, the real-time online calculation of the inverse kinematics and the scheme of the closed-loop control is conducted on DSP (digital signal processor).Finally, the experimental results substantially confirm that the improved positioning precision of the bionic eye is obtained by introducing the proposed algorithm.%提出了一种基于姿态反馈的球面并联机构闭环控制方法,有效地解决了该机构输入与输出之间复杂的3维非线性强耦合映射关系给构建闭环系统带来的问题.同时将球面并联机构应用到机器人眼设计上,制作了类似人眼运动特点、比人眼尺寸略大、具有控制和视频信号接口的仿生眼实物;基于数字信号处理器(DSP)的控制系统实现了逆解和闭环控制算法的实时在线计算.实验结果表明,姿态闭环控制算法有效提高了仿生眼的定位精度.

  5. Scour Prevention of East China Sea Oil & Gas Export Pipeline on The Base of Bionic Scour-Prevention Technique%基于仿生技术防治平湖油气田外输海底管线冲刷的探讨

    Institute of Scientific and Technical Information of China (English)

    梁富浩; 张印桐; 庄亚锋; 苗春生

    2011-01-01

    以曾两次因冲刷悬空而发生事故的平湖油气田岱山近岸段KP2.6为例,通过比较挖沟、传统抛石、砂袋支撑、水泥压块以及仿生草技术等悬空处理与冲刷控制措施,提出了“砂袋悬空回填与仿生草永久性冲刷防治”方案,系统地探讨将仿生草技术用于东海海底管线的防护,对东海乃至全国海底管线悬空处理与冲刷防治都有借鉴价值.%Taking the KP2. 6 near Dai-shan shore approach of Ping-hu Oil and Gas field as an example, which damaged twice by the scour, comparing with the trenching, traditional stone dumping, sand bags support and concrete mattresses, and bionic scour- prevention technique, sand bags support for free-span back fill and frond mats are recommended for permanent scour prevention, and this is the first time to systemicly discuss the bionic scour- prevention technique for the subsea pipelines in the east china sea, so there will be important applied value and practical significance for scour protection and free-spans rectification of subsea pipeline in the east china sea.

  6. Kinematics Analysis and Parametric Design of a Walking Mechanism of Bionic Biped Water-Walking Robot%仿生双足水上行走机器人行走机构的运动学分析及参数化设计

    Institute of Scientific and Technical Information of China (English)

    曹凯; 徐林森; 沈惠平; 魏鲜明

    2013-01-01

    A walking mechanism of bionic biped water -walking robot is designed; educing the equations of the location, velocity, and acceleration of two feet mass sports center. To simulate the foot trajectory of basilisk lizard's, the foot rod and the horizontal plane angle curve is taken as the objective of parameter design, and the influences of the foot rod bar length change to the foot rid and the horizontal plane angle is analyzed through the software. The walking mechanism is parametric designed by analyzing the influential factors of sensitivity. Finally the parametric designed mechanism is simulated, and the simulation results show that the movement of this bionic walking mechanism can meet the basilisk lizards 'foot trajectory.%设计了仿生双足水上行走机器人行走机构,通过运动学分析导出了两脚掌质心的运动轨迹方程、速度及加速度方程;以模拟蛇怪蜥蜴脚掌的运动轨迹为目标,以脚杆与水平面的夹角曲线作为目标进行参数化设计,通过软件分析得到了各部分杆长变化对脚杆与水平面的夹角的影响,经过分析影响因素的敏感度,对机构进行参数化设计.最后对参数化设计的机构进行仿真分析,仿真结果表明,该仿生机构脚杆的运动能够满足蛇怪蜥蜴脚掌的运动轨迹.

  7. A Study on Eliminating Nitrite and Breaking Nitrosamine Synthesis by Gentiana Scabra Bunge in Vitro With Semi-bionic Extraction Methodology%半仿生下龙胆草体外清除亚硝酸盐及阻断亚硝胺合成的研究

    Institute of Scientific and Technical Information of China (English)

    黄俊生; 张佩虹; 陈晓銮; 林少宏

    2012-01-01

    This paper studied the ability of eliminating nitrite and breaking nitrosamine synthesis by Gen- tiana scabra Bunge in vitro with semi-bionic extraction methodology, according to the percentages of eliminat- ing nitrite and breaking nitrosamine synthesis. The results showed that: the best effects reached when extracting 3 times with the ratio to extraction liquid 1:15, 70 ℃, and 1.5 h for each time with semi-bionic extraction meth- odology. The max capability of eliminating nitrite was 87.14%. The max capability of breaking nitrosamine syn- thesis was 65.23%. These percentages are 4 times and 1.5 times higher than using the usual methods.%以清除亚硝酸盐及阻断亚硝胺合成的百分率为综合评价指标,研究了半仿生法下龙胆草提取液体外清除亚硝酸盐和阻断亚硝胺合成的能力.研究结果表明,半仿生法下在70℃,用1:15的料液比提取3次,每次1.5h,所得结果最佳,对亚硝酸盐最大清除率可达90.79%,亚硝胺合成的阻断率最大达65.23%,分别是常规提取方法的4倍、1.5倍.

  8. The Method for the Calibration and Measurement of Bionic Compound-eye System%仿生复眼系统标定及测量方法研究

    Institute of Scientific and Technical Information of China (English)

    张雄; 宋乐; 张姗姗; 房丰洲

    2014-01-01

    为了实现对近景目标物的三维测量,研制了一种小型仿生复眼系统。介绍了该复眼系统的结构及其参数设计原则,并对该系统采用的标定、三维测量等算法进行研究。首先根据复眼成像特点搭建了标定和测量平台,并分别使用张正友的方法、直接线性变换法、Tsai 式两步法三种摄像机标定方法对复眼的中心子眼进行标定,通过比较实验结果发现Tsai式标定方法精度更高,更适用于本复眼系统的标定。然后针对边缘子眼光轴与图像传感器不垂直问题,提出了一种新的图像畸变数学模型,有效的提高了边缘子眼的标定精度。最后建立了多子眼三维探测模型,并探索了多子眼成像对复眼相机测量精度的影响,认为三子眼可获得比双子眼更高的精度和稳定性。实验结果表明,在距离复眼相机150∼260 mm范围内,该复眼探测系统的三维测量相对误差在2%左右,在满足仪器小型化的同时能基本实现近景三维测量。%In order to realize close-range measurement, a miniaturized bionic compound-eye system was developed and the design principles of the system structure and parameters were introduced. Besides, the calibration and three-dimensional measurement algorithms were investigated. First, the platform for calibration and measurement was built based on imaging characteristics of the compound-eye. Three kinds of camera calibration methods, including Zhang’s method, the direct linear transformation method and Tsai two-step method, were carried out to calibrate the central sub-eye. By comparing the experimental results, it was determined that Tsai two-step method with high precision and accuracy was suitable for the calibration of the compound-eye system presented. Then, to solve the problem that the edge sub-vision axis was not perpendicular to the image sensor, a new distortion model that effectively improved the edge sub

  9. Technique Optimization of Semi-Bionic Extraction for Erhuang Decoction%二黄汤方药半仿生提取法工艺条件的优选

    Institute of Scientific and Technical Information of China (English)

    王京龙; 孙秀梅; 张兆旺; 黄延亮; 姜仁禹; 周莹

    2011-01-01

    Objective To optimize the techniques of semi - bionic extraction( SBE )for erhuang decoction with uniform design. Methods The uniform design U9( 91 × 33 )table was used. In the same conditions, such as formula specification , decoction extraction temperature , water dose of decoction extraction, filtration and concentration, taking water pH values of three decoctions and the total decoction time as the investigation factors, and the extract of molecular weight ≤ 1000 Da , baicalin , berberine hydrochloride , glycyrrhetinic acid and total alkaloids as the indicators , the values of all the indicators were standardized and Y value of comprehensive evaluation index was ohtained after weighted summation. With JYSYSJ software management,the technique conditions of this formula SBE were optimized. Results With comprehensive analysis, the optimized techniques of SBE for erhuang decoction : pH values of three decoction A = 3.6032 ,B = 6.5039, C =8.7656 successively; the total extraction time of three decoctions: D = 4.9473. Conclusion In association with the actual production,it is determined that pH values of three decoction are 3.5 ,6.5 and 8.8 ; and the extrac:tion time is 2.0 h,l.5 h and 1.5 h successively. Y' value of the comprehensive evaluation for the confirmatory test extract is near to the predicted value. All of those explain that SBE technique parameters optimized in the uniform design for this formula are applicable in production.%目的 用均匀设计优选二黄汤方药半仿生提取的工艺条件.方法 采用均匀设计U9(91×33)表,在方药规格、煎提温度、煎提用水量、滤过、浓缩等条件相同的情况下,以3煎用水的pH值及总煎煮时间为考察因素,分子量≤1 000 Da提取物、黄芩苷、盐酸小檗碱、甘草次酸、总生物碱为指标,将各指标测得值进行标准化处理,并经加权求和后得到综合评判指标Y值,用JYSYSJ软件处理,优化该方药半仿生提取的工艺条件.结果 经综

  10. The Silicon Cochlea:. from Biology to Bionics

    Science.gov (United States)

    Turicchia, L.; Sarpeshkar, R.

    2003-02-01

    The silicon cochlea maps the traveling-wave architecture of the biological cochlea into a silicon chip. Such an architecture is an efficient way of implementing a bank of wide-dynamic-range frequency-analysis channels in both biology and electronics [1]. However, in both biology and electronics, gain control is essential in ensuring that the architecture is robust to parameter changes, and in attaining wide dynamic range, a fact that has not been widely appreciated. A silicon cochlea with distributed gain control is likely to be advantageous as a front end in future cochlear-implant processors to improve patient performance in noise and to implement the computationally intensive algorithms of the biological cochlea with very low power. We implement a computer simulation of a filter-cascade cochlear model with distributed gain control that incorporates several important features such as multiband compression, an intertwining of filtering and compression, masking, and an ability to tradeoff the preservation of spectral contrast with the preservation of audibility. The particular gain control algorithm that we discuss successfully reproduces cochlear frequency response curves, and represents an example of a class of distributed-control algorithms that could yield similar results.

  11. Bionic Running for Unilateral Transtibial Military Amputees

    Science.gov (United States)

    2010-01-01

    effectiveness during real time control. One simplification to state estimation algorithms is to measure the amputee’s electromyographic (EMG) signals ...directly. Studies suggest there is a correlation between the amputee’s EMG signals and the desired actuator function (Ferris, 2006; Novacheck, 1998...However, the dominant factor in the effectiveness of myoelectric -based control is the system’s ability to reliably acquire and process an

  12. Bionic Design Methods - A practical approach

    DEFF Research Database (Denmark)

    Kepler, Jørgen Asbøll; Stokholm, Marianne Denise J.

    2004-01-01

    product design. From a formulation of design demands, which need not necessarily be very precise, the approach continues with a study of natural objects (anaimals, plants) which are subject to the same demands. From this study, the working principle(s) are derived. This (these) are then clarified through...

  13. Bionic robot arm with compliant actuators

    Science.gov (United States)

    Moehl, Bernhard

    2000-10-01

    Traditional robotics uses non-compliant materials for all components involved in the production of movement. Elasticity is avoided as far as possible, because it leads to hazardous oscillations and makes control of precise movements very difficult. Due to this deliberate stiffness, robots are typically heavy and clumsy structures in comparison to their living counterparts (i.e. man and animals). Yet, moving systems in nature cope not only with the difficulties introduced by compliant materials, they also take advantage of the elasticity in muscles and tendons to produce smooth and even rapid movements. It is understood, that elasticity in a multi-jointed moving system requires sophisticated control mechanisms- as provided by a nervous system or a suitably programmed computer. In this contribution I shall describe a two-jointed robot with purpose-built elasticity in its actuators. This is accomplished by spiral springs places in series with a conventional electric motor and a tendon to the arm. It is shown that, with sufficiently soft elasticity, oscillations can be avoided by active oscillation damping. (Such active oscillation damping presumably also governs movement control in man and animals.) Furthermore, once the major problem has been overcome, elasticity is found to offer a wide spectrum of valuable advantages, as far as the most serious problems in traditional robotics are concerned. They are summarized by terms such as less dangerous, position tolerant, lightweight construction, controlled forces, and ballistic movements. These will be explained in detail and presented for discussion.

  14. D-BIonic Screening of Scalar Fields

    CERN Document Server

    Burrage, Clare

    2014-01-01

    We study a new screening mechanism which is present in Dirac-Born-Infeld (DBI)-like theories. A scalar field with a DBI-like Lagrangian is minimally coupled to matter. In the vicinity of sufficiently dense sources, non-linearities in the scalar dominate and result in an approximately constant acceleration on a test particle, thereby suppressing the scalar force relative to gravity. Unlike generic P(X) theories, screening happens within the regime of validity of the effective field theory, thanks to the DBI symmetry. This symmetry also allows the removal of a constant field gradient, like in galileons. Not surprisingly, perturbations around the spherically-symmetry background propagate superluminally, but we argue for a chronology protection analogous to galileons. We derive constraints on the theory parameters from tests of gravity and discuss various extensions.

  15. BOWOOSS: bionic optimized wood shells with sustainability

    Science.gov (United States)

    Pohl, Göran

    2011-04-01

    In architecture, shell construction is used for the most efficient, large spatial structures. Until now the use of wood rather played a marginal role, implementing those examples of architecture, although this material offers manifold advantages, especially against the background of accelerating shortage of resources and increasing requirements concerning the energy balance. Regarding the implementation of shells, nature offers a wide range of suggestions. The focus of the examinations is on the shells of marine plankton, especially of diatoms, whose richness in species promises the discovery of entirely new construction principles. The project is targeting at transferring advantageous features of these organisms on industrial produced, modular wood shell structures. Currently a transfer of these structures in CAD - models is taking place, helping to perform stress analysis by computational methods. Micro as well as macro structures are the subject of diverse consideration, allowing to draw the necessary conclusions for an architectural design. The insights of these tests are the basis for the development of physical models on different scales, which are used to verify the different approaches. Another important aim which is promoted in the project is to enhance the competitiveness of timber construction. Downsizing of the prefabricated structural elements leads to considerable lower transportation costs as abnormal loads can be avoided as far as possible and means of transportation can be loaded with higher efficiency so that an important contribution to the sustainability in the field of architecture can also be made.

  16. "Bionic Eye" May Help Reverse Blindness

    Institute of Scientific and Technical Information of China (English)

    Kelly; Young; 滕旭宁

    2005-01-01

    人们都说眼睛是心灵的窗户,一旦失去这扇带给人们快乐的窗户,世界会变成何等模样!但失明却是困扰人们的一大难题。美国研究者利用仿生学原理发明了一种人造眼睛,或许有一天可以帮助盲人重见光明,但该装置能否适用于人体还有待于进一步的试验。

  17. Bionic vision: system architectures: a review.

    Science.gov (United States)

    Guenther, Thomas; Lovell, Nigel H; Suaning, Gregg J

    2012-01-01

    The concept of an electronic visual prosthesis has been investigated since the early 20th century. While the first generation of long-term implantable devices were defined by the turn of the millennium, the greatest progress has been achieved in the past decade. This review describes the current state of the art of visual prosthesis investigated by more than two dozen active groups in this field of research. The focus is on technological solutions in regard to long-term safety of materials, electrode-tissue interfaces and encapsulation technologies. Furthermore, we critically assess the maximum number of stimulating electrodes each technological approach is likely to provide.

  18. Non-Abelian BIonic Brane Intersections

    CERN Document Server

    Cook, P; Murugan, J; Cook, Paul; Koch, Robert de Mello; Murugan, Jeff

    2003-01-01

    We study "fuzzy funnel" solutions to the non-Abelian equations of motion of the D-string. Our funnel describes n^6/360 coincident D-strings ending on n^3/6 D7-branes, in terms of a fuzzy six-sphere which expands along the string. We also provide a dual description of this configuration in terms of the world volume theory of the D7-branes.

  19. Analysis of the clinical effect of labor analgesia on natural childbirth with balloon bionic midwifery%气囊仿生助产术配合分娩镇痛对自然分娩的临床效果分析

    Institute of Scientific and Technical Information of China (English)

    罗桂平

    2013-01-01

    目的:探讨气囊仿生助产术配合分娩镇痛对自然分娩的临床效果分析。方法选取我科收治的待分娩产妇88例进行分析讨论,随机将其分为对照组与观察组,对照组患者在分娩过程中实施常规的护理措施,观察组患者在分娩过程中实施气囊仿生助产术配合分娩镇痛的护理措施,比较两组患者的分娩疼痛程度、第二产程时间、焦虑评分。结果观察组患者实施药物配方的镇痛后产妇的分娩疼痛程度、第二产程时间、焦虑评分明显优于对照组,经比较具有显著差异(P<0.05)。结论对于分娩过程中实施气囊仿生助产术配合分娩镇痛使孕产妇的分娩疼痛降低,甚至达到无痛分娩,产程时间缩短,患者产后焦虑心理情绪明显降低,值得在临床分娩中广泛使用。%Objective To investigate the clinical effect of combined labor analgesia on natural childbirth balloon bionic midwifery. Methods selected in our hospital from the delivery in 88 cases were analyzed, and were randomly divided into control group and observation group, the control group received routine nursing measures during childbirth, the observation group received nursing measures for labor analgesia with balloon bionic midwifery during childbirth, compared two groups of patients since the two groups were compared the labor pain, duration of second stage of labor, the score of anxiety. Results the observation of different drug formulation groups in analgesia after the pain of delivery, time of the second stage of labor, anxiety scores than the control group, by comparison with signiifcant difference (P<0.05). Conclusion for with delivery analgesia make the pain of delivery balloon bionic midwifery practice to reduce the delivery process, even to the painless childbirth, the ifrst stage of labor time, postpartum anxiety mood in patients with decreased obviously, is widely used in clinical childbirth.

  20. Efficacy analysis of electroencephalograph bionic electrical stimulation combined with exercise therapy for rehabilitation of cerebral motor function palsy%脑电仿生电刺激联合运动疗法对软瘫患儿运动功能的康复疗效分析

    Institute of Scientific and Technical Information of China (English)

    莫凤; 杨琴

    2016-01-01

    目的:探讨脑电仿生电刺激联合运动疗法对软瘫患儿运动功能的康复疗效。方法选取2010年1月至2014年12月收治的67例软瘫患儿进行研究,分为研究组(n=33)和对照组(n=34),对照组的患儿采用常规康复手段进行康复,研究组患儿采用脑电仿生电刺激结合运动疗法进行康复。对治疗前后的效果分别采用Peabody运动发育量表( PDMS-2)和Gesell发育量表( GDS)进行疗效评价。结果治疗12周后,两组患儿的GMQ、FMQ、TMQ和DQ与治疗前比较,均有显著改善,差异均有统计学意义( P<0.05)。相对于对照组而言,研究组治疗12周后的GMQ、FMQ、TMQ和DQ改善幅度更大,两组差异有统计学意义(P<0.05)。结论脑电仿生电刺激联合运动疗法治疗小儿脑瘫软瘫,可帮助其运动功能康复,疗效良好。%Objective To analyze the efficacy of electroencephalograph bionic electrical stimulation combined with exercise therapy for cerebral rehabilitation motor function palsy.Methods Selected 67 cases of pediatric with cerebral palsy who were treated between January 2010 and December 2010 in our department, divided into research group (n =33) and control group (n =34), healing routine rehabilitation method was adopted to control group, the team with the electroencephalograph bionic electrical stimulation combined with exercise therapy for rehabilitation.Effect of before and after treatment with Peabody of motor scale (PDMS-2) and Gesell developmental scale ( GDS) curative effect evaluation.Results 12 weeks after treatment, two groups of children with GMQ, FMQ and TMQ and DQ compared with before treatment, all had improved significantly, and the difference had statistical significance (P<0.05).Relative to the control group, the team after 12 weeks of treatment GMQ, FMQ and TMQ and DQ improve amplitude was bigger, differences between the two groups was statistically significant (P<0

  1. Comparison of the clinical effect between bionic air-bag midwifery by single expansion method and natural delivery%“单扩法”气囊仿生助产与自然分娩临床效果比较

    Institute of Scientific and Technical Information of China (English)

    姚娟娟; 董林红; 邓月桂; 蒙朝霞; 覃莹莹

    2016-01-01

    Objective To explore the clinical effect of a bionic air-bag midwifery skill by single expansion method in delivery.Methods Eighty puerperae in accordance with the inclusion criteria were randomly divided into the observation group(n=40) and the control group(n=40).The bionic air-bag midwifery skill by single expansion method was used in the observation group when the cervix was dilated≥5 cm.The duration of labor,delivery modes, perineum conditions, amount of postpartum hemorrhage and the rate of neonatal asphyxia were compared between the two groups.Results The time of the first, second stage and the total labor duration in the observation group were sig-nificantly shorter than those in the control group(P0.05).Con-clusion The bionic air-bag midwifery by single expansion method can shorten the laboring time and reduce the relat-ed complications during parturition.%目的:探讨在自然分娩过程中使用“单扩法”气囊仿生助产术的临床疗效。方法将符合纳入标准的80例产妇随机分为观察组和对照组各40例,观察组在宫口开大≥5 cm时采用“单扩法”气囊仿生助产术助产,对照组采取自然分娩。记录比较两组产妇的产程时间、分娩方式、会阴情况、产后出血情况及新生儿窒息率。结果观察组第一产程、第二产程及总产程时间均短于对照组,差异均有统计学意义( P<0.05)。观察组产妇产后2 h内平均出血量少于对照组,差异有统计学意义( P<0.05)。两组分娩方式、会阴情况及新生儿窒息率比较差异均无统计学意义(P>0.05)。结论“单扩法”气囊仿生助产术可以明显缩短产程时间,降低并发症发生率,对母婴无不良影响,值得临床应用推广。

  2. 用均匀设计优选栀子柏皮汤半仿生法提取的工艺条件%Optimizing the technological parameters for extracting Zhizi Baipi decoction with uniform design of semi-bionic method

    Institute of Scientific and Technical Information of China (English)

    荆汉卫; 孙秀梅; 张兆旺; 黄延亮

    2011-01-01

    [目的]优选栀子柏皮汤半仿生提取工艺条件.[方法]采用均匀设计法,在方药规格、煎提温度、煎提用水量、滤过、浓缩等条件相同的情况下,以分子量≤l 000 u提取物、栀子苷、小檗碱、甘草次酸、总生物碱为指标,综合评判,优选该方药半仿生提取的工艺条件.[结果]3煎用水的pH值依次为2.031 1、7.495 5、8.419 3,3煎总计时间为4.016 2 h.[结论]结合实际生产,确定3煎用水的pH值依次为2.0、7.5、8.5;提取时间依次为2、1、1h.%[Objective] To optimize the semi-bionic extraction condition for Zhizi Baipi decoction. [Methods] Using the uniform design and taking the extracted material ≤ 1 000 u of molecular weight, Geniposide, berberine, glycyrrhetinic acid and total alkaloids as the index and under the same condition of the prescription specifications, the temperature of decocting and extracting, the used water volume,the filtration and concentration method, the art condition for semi-bionic extraction of this prescription was analyzed comprehensively and optimazed. [Results] The pH value of the three times of decocting water was 2.031 1, 7.495 5 and 8.419 3. The total boiling time was 4.016 2 h. [Conclusion] In combination with actual production it was determined that the pH value for the three times of decocting water was 2.0, 7.5, 8.5 in tern and the extracting course was 2 h, 1 h and 1 h respectively.

  3. Polarization Sensor Based on Bionic Compound Eyes and Its Applications in the Atmospheric E-Vector Measurement%仿生复眼光学偏振传感器及其大气偏振E矢量检测应用

    Institute of Scientific and Technical Information of China (English)

    丁宇凯; 唐军; 王飞; 王晨光; 翟超; 曹卫达; 周智君; 赵鹏飞; 刘俊

    2013-01-01

    大气光学偏振模式中包含了丰富的方向和位置信息,通过有效提取和利用大气偏振模式信息,可以实现一种全新概念的自主导航定位方式。 E-矢量是其偏振信息中最为关键和最为稳定的参数,仿照昆虫的导航偏振敏感机理,设计了一种仿生复眼光学偏振传感器;根据昆虫的POL-神经元的信号处理方式,推导出传感器输出信号数学处理方法;对传感器进行了测试实验并在不同天气下对大气偏振模式中E-矢量方向进行检测。通过对晴朗无云的天气大气偏振模式进行检测,偏振E-矢量平均误差为0.46752º。对大气E-矢量的检测表明仿生复眼光学偏振传感器能够实现对大气偏振模式的准确检测,为偏振光导航这一自主导航系统发展奠定了基础。%Atmospheric optics polarization pattern contains abundant direction and position information,a brand new concept of autonomous navigation mode can be achieved through the acquisition of atmospheric polarization pattern, among whose polarization information E-vector is the most important and stable parameter. According to the mechanism through imitating the polarization sensitive mechanism of insects,a polarization sensor based on bionic compound eyes was designed;according to the signal processing method of insect's POL-neurons,the mathematical processing method of the output signal of the sensor was deduced;test and the monitoring of E-vector are carried out. Through detecting the atmospheric polarization pattern in the sunny days, the average error of the sensor is 0.467 52o. Experimental results of monitoring of E-vector indicate that the bionic polarization sensor can monitor at-mospheric polarization pattern precisely, laying the foundation for an autonomous navigation system based on polarized light.

  4. Torque analysis on bionic model of bamboo weevil rostrum based on ANSYS%基于ANSYS的竹象虫头管仿生模型抗扭转分析

    Institute of Scientific and Technical Information of China (English)

    许顺; 佟金; 马云海; 李默

    2016-01-01

    their morphology. The reinforcing ribs perforated several axial layers and circumferential layers along the radial direction, but its size and distribution were very randomly. From the element spectrum diagrams and nanomechanical tests, it was found that the outer layer of rostrum contained carbon (C), hydrogen (H), nitrogen (N) and oxygen (O), which are essential elements to composite chitin, and furthermore, it also contained inorganic salts like silicon (Si), magnesium (Mg) and potassium (K). And in this layer, the elasticity modulus, hardness and stiffness were 3.074 GPa, 182.254 MPa and 8.12μN/nm, respectively. The main component of axial layers was saccharides or lipid that was dependent on the chemical union of C, H and O, and its elasticity modulus, hardness and stiffness were 3.152 GPa, 121.392 MPa and 10.283μN/nm, respectively. The circumferential layers contained C, H, N, O and chlorine (Cl), and its elasticity modulus, hardness and stiffness were the highest, which were 8.645 GPa, 246.620 MPa and 19.695 μN/nm, respectively. From the measurement result, the main characteristics of bamboo weevil rostrum could be found. First, rostrum was a hollow multilayer pipe, which had nice strength and stiffness. Second, the outer layer was chitin, the axial layers consisted of sheet saccharides or lipid, and the circumferential layers contained protein and fibers. Specially, the circumferential layers had excellent mechanical capacity that made the rostrum more powerful. Third, the thickness of each axial layer changed in a certain sequence from outside to inside. In addition, the radial ribs connected several layers, which was conducive to better balance the stress and deformation on different bearing layers. Finally, the bionic multilayer pipes designed by learning the rostrum were modeled after appropriate simplification and majorization, and the torsional deformation was examined. The finite element analysis (FEA) method was applied to analyze the rationality of

  5. Bionic mechanics of customized cellular bio-magnesium scaffolds for large-area defects of femoral shafts and implants for orthopaedics surgery%股骨干大面积缺损多孔生物镁支架和骨科植入物的仿生力学

    Institute of Scientific and Technical Information of China (English)

    赵为民; 李秉哲; 唐六丁; Peter Paul Müler

    2014-01-01

    financial y by German Academic Exchange Service, visiting the Department of Molecule Biotechnology, German Helmholtz Center of Infection Research, Braunschweig, Germany, creating the cooperation relation to research into the project“Fundament and Application of Biomimetic Technology for Customized cellular Biomagnesium Scaffolds of Loaded Tissue Engineering Bones”, finishing the present work and“Investigation on the Nanosize and Zeta(ξ)-potential of Polyelectrolytes for Biomimetic Coating Technology”. OBJECTIVE:To focus on studying bionic mechanics between cellular scaffolds, customized for large area defects of femoral shafts, and new ingrown bones, as wel as bionic mechanics between host bones and platelike implants for orthopaedics surgery, by means of elastic mechanics and stereo-quantitative metal ographic analysis, and proposing the principle of bionic mechanics and the design criterion for above mentioned two types of problems, also some directions for research and development. METHODS:Different types of micro-volume models for two types of composites, i.e., cellular scaffolds/new-growing bones bio-composites, as wel as plate-like implants/host bones layered composites were created, as wel as different modulus mixing rules and mechanical stresses, i.e., stimuli, were presented, respectively. RESULTS AND CONCLUSION:Under the different modulus and volume fractions of scaffold materials, the mechanical stimuli of new ingrown bones are compared:(1) except cellular tantalum, the strength of cellular metal ic scaffolds/new ingrown bones composites is obviously much higher than that of original host bones, to enable resolving the problem on insufficient mechanical strengths in early period of implanting the compound between partial demineralized bone scaffolds and autogenous human bone marrow mesenchymal stem cells, as wel as other organic or inorganic scaffolds for tissue engineering. (2) The less the modulus and volume fraction of materials for cellular scaffold

  6. 矿物药朱砂加工流程中可溶性重金属含量的仿生提取-ICP-OES测定方法%Determination method of soluble heavy metals in mineral medicine cinnabaris in process of production and processing by ICP-OES with bionic extraction and microwave digestion technology

    Institute of Scientific and Technical Information of China (English)

    蒋秋桃; 曾丽; 马杰; 李文莉; 丁野; 李洁

    2016-01-01

    收集朱砂生产加工工艺流程中不同工艺点的样品,采用仿生提取−电感耦合等离子体发射原子光谱法(仿生提取-ICP-OES法)对朱砂样品中可溶性重金属含量进行测定。研究结果表明:仿生提取-ICP-OES法能满足13种重金属同时检测要求,13种重金属线性范围均在0.1~1000.0μg/L之间,线性相关系数为0.9901~1.0000,检出限为0.0893~16.0414μg/L;该方法重复性相对标准偏差DRS均小于10.0%,精密度的DRS均小于7.1%,加样回收率为83.0%~117.5%,满足检测要求;在工艺流程中,朱砂的可溶性重金属含量呈逐步降低趋势,参照《药用植物及制剂进出口绿色行业标准》的限量标准,仅有H-5的Cd超出标准及H-3,H-4和H-5样品的Pb超出标准;仿生提取-ICP-OES法简单、快速,准确性及精度高,能够通过同时检测朱砂加工工艺过程中13种可溶性重金属含量检测,为实时监控朱砂加工工艺质量提供参考依据,有助于完善并确定最佳的朱砂生产加工流程。%Cinnabar samples with different processes in production and processing process were collected. Soluble heavy metals in cinnabaris were determined in the process of production and processing by inductively coupled plasma-optical emission spectrometry(ICP-OES) with bionic extraction and microwave digestion technology. The results show that 13 kinds of elements have excellent linearity over the range of 0.1−1 000.0 μg/L with a correlation coefficient of 0.990 1−1.000 0. Limits of detection are in the range of 0.089 3−16.041 4μg/L. Relative standard deviation DRS of the repeatability is less than 10.0%. DRS of precision is lower than 7.1%. Spike recoveries in the range of 83.0%−117.5%are obtained. In the process, the content of soluble heavy metals’ gradually reduces. With reference to green trade standards of importing&exporting medicinal plants&preparations, none of the samples surpass the legal limit for

  7. 仿生技术在转基因大豆中镍形态分析和生物可给性评价中的应用%Application of Bionic Technology to Speciation Analysis and Bioavailability Assessment of Nickel in Transgenic Soybean

    Institute of Scientific and Technical Information of China (English)

    陈丽惠; 李顺兴; 牟洋; 郑凤英; 李艳彩; 王慧; 郑娜燕; 谢和芳

    2013-01-01

    转基因的食品安全问题一直是科学家和公众关注的焦点,其微量元素的生物可给性研究可为转基因食品的安全评价提供参考。以“胃肠仿生消化、肠道微生物代谢、脂质体仿生物膜亲合吸附”构建胃肠功能模型,用于大豆(转基因大豆和普通大豆)的样品前处理,以脂质体亲合态、水溶态界定消化食糜中镍化合物的形态,以人体可吸收部分的脂质体亲合态评价大豆中镍的生物可给性。经胃肠消化和微生物代谢,大豆食糜中镍配合物以水溶态为主;胃肠消化、肠道微生物代谢均对镍配合物的生物可给性起促进作用;转基因大豆和普通大豆中镍的生物可给性分别为4.1%和3.3%,即大豆转基因后镍生物可给性提高24%;但转基因大豆中脂质体结合态镍含量122.3 ng · g -1,仅为普通大豆的36%。%The safety of transgenic food has been paid the most attention to by the public and scientists .Trace metal bioavail-ability could provide information for safety assessment of transgenic food .The critical functional digestion and absorption in the gastrointestinal tract were simulated by bionic gastrointestinal digestion ,metabolism of gut microbiota ,and bionic biomembrane adsorption with liposome and then used for the pretreatment of transgenic and general soybeans .Ni speciation in the chyme was defined as affinity-liposome and water soluble Ni .Nickel bioavailability was assessed by the content of affinity-liposome Ni . .Water soluble Ni was the main species of nickel complex in the chyme .Nickel bioavailability was 4.1% for transgenic soybean and 3.3% for general soybean ,which could be enhanced by gastrointestinal digestion and metabolism of gut microbiota .After transgene ,nickel bioavailability was increased 24% but the content of affinity-liposome Ni was 122.3 ng · g -1 for transgenic soybean ,just as 36% as that of general soybean .

  8. 基于磁性金属有机框架化合物-适配体探针的氯霉素仿生比色传感器研究%A Colorimetric Bionic Aptasensor Base on Magnetic Metal Organic Framework Compound-Aptamer Probe for Specific Detection of Chloramphenicol

    Institute of Scientific and Technical Information of China (English)

    吴彩叶; 缪养宝; 朱云云; 干宁; 欧昌荣; 曹锦轩

    2016-01-01

    构建了一种基于磁性金属有机框架化合物( MOF)-适配体探针的仿生比色传感器,用于食品中氯霉素残留分析。首先将氯霉素( CAP)的适配体标记到Fe3 O4磁珠上获得捕获探针,进而采用该适配体的互补链标记到铁基MOF( Fe-MOF)上作为纳米示踪剂( MOF-cDNA),将捕获探针和示踪剂杂交结合后,可获得铁磁性仿生复合探针。当氯霉素和此类探针孵育后,其与捕获探针上的适配体结合,将纳米示踪剂释放到溶液中,并经过磁分离后进入上清液。由于Fe-MOF具有过氧化物酶的性质,可以催化TMB-H2 O2系统显色,由此构建了一种高选择性的氯霉素比色传感器。在最佳反应条件下,本法对氯霉素的检测范围在0.001~10 ng/mL之间,最低检出限为0.3 pg/mL(S/N=3),实际样品的加标回收率为86.9%~93.5%,且不受其它抗生素干扰。用此方法检测牛奶样品中氯霉素的结果与商业化ELISA方法一致。此类无酶标记仿生探针具有高催化活性且成本较酶标探针大大降低;该分析方法利用磁分离简化了前处理步骤,可用于奶制品中氯霉素的快速灵敏分析。%A colorimetric bionic aptasensor based on magnetic metal organic framework ( MOF ) compound-aptamer bionic probe was designed for detecting chloramphenicol ( CAP ) . In this assay, the aptamer was labeled on the magnetic beads as capture probe and its complementary strand ( cDNA ) was immobilized on MOF as the nanotracer composite probe, and the ferromagnetic biomimetic composite probe was obtained by hybridizing the capture probe with the tracer. When the composite probe solution was incubated with CAP, the aptamer on the capture probes preferentially combines with CAP, and the signal tag was substituted into supernatant after magnetic separation. The supernatant containing numerous MOF could efficiently catalyze tetramethylbenzidine ( TMB )-H2 O2 solution for the color development

  9. Variation of the Method for Determining the Enzyme Hydrolysate Gross Energy of Feedstuff by in Vitro Bionic Digestion Based on Simulated Digestion System for Broilers%基于单胃动物仿生消化系统的鸡仿生消化法测定饲料酶水解物能值变异程度的研究

    Institute of Scientific and Technical Information of China (English)

    赵峰; 米宝民; 任立芹; 王钰明; 张宏福

    2014-01-01

    Variation of the method for determining the enzyme hydrolysate gross energy(EHGE)of feedstuff using in vitro bionic digestion was investigated to confirm the precision of assay and evaluate the factors con-tributed to the variation of determined values. A single factorial completely randomized design was adapted. Three computer-controlled simulated digestion system( SDS-2)were randomly selected to determine the dry matter digestibility( DMD)and EHGE in corn,wheat,rapeseed meal and cottonseed meal. Each feedstuff was repeatedly determined for the DMD and EHGE in 3 batches. Each batch contained 5 replicates with 1 di-gestion tube per replicate. The variation coefficients of variables for determining the DMD and EHGE were cal-culated and the correlation between these variables and DMD or EHGE were developed. The results showed as follows:1)the intra-batch,inter-batch and total coefficient of variation( CV)were all less than 1.00% for DMD and EHGE in corn,wheat and cottonseed meal. The intra-batch,inter-batch and total CV were all less than 1.00% for DMD and 1. 64% for EHGE in rapeseed meal,respectively. In bionic digestion,the intra-batch,inter-batch and total CV were all less than 0.40%,4.16%,4.17% and 2.08% for sample weight,resi-dues weight,residues energy and residues energy content,respectively. 2)Correlation between sample weight and DMD was not significant for corn,wheat and rapeseed meal( P > 0.05),also low for cottonseed meal ( | r| 0.05). However,high correlation between residues weight and DMD,and between residues energy and EHGE were observed for all feedstuffs( | r| >0.95,P0.05). In conclusion,the precision is acceptable for the method to determine DMD and EHGE of feedstuffs u-sing bionic digestion based on SDS-2. The variation of residues weight is the main factor contributed to the var-iation of DMD and EHGE.%本试验旨在探讨仿生消化法测定鸡饲料酶水解物能值( EHGE)的变异程度,为确定该方法的测试精度与变异因

  10. 双足机器人自适应常值驱动与传感反馈结合的仿生行走控制%Bionic walking control based on adaptive constant torque and sensory feedback for the biped robot

    Institute of Scientific and Technical Information of China (English)

    刘丽梅; 田彦涛

    2013-01-01

    To make the chaotic gaits converge to a stable cycle gait, a control algorithm is proposed for the biped robot with knees. Firstly, the passive gaits changes with the changing of the slope are studied by using the Poincarésection method. It shows that the increasing of the ground slope will result in the appearance of period-doubling and chaotic gaits. Then, based on the biomechanics in human walking and delayed feedback control theory, bionic walking control based on adaptive constant torque and sensory feedback for the biped robot is designed. The controller parameters are regulated gradually in terms of the initial states of the current step and the first two steps. Finally, the chaotic gaits converge to the cycle gaits with this controller. Simulation results show the effectiveness of the presented control algorithm.%  为了将双足机器人的混沌步态控制收敛到稳定的周期步态,提出一种控制策略。首先用庞卡莱截面法研究斜坡倾角变化对步态的影响,结果表明,坡度增大会导致倍周期步态到混沌步态的产生;然后以人类步行的生物力学为仿生依据,根据延迟反馈控制的基本思路,设计了自适应常值驱动与传感反馈相结合的仿生行走控制策略,并依据当前步和前两步初始状态对控制器参数进行逐步调节,最终将混沌步态控制收敛到周期步态。仿真结果表明了所提出算法的有效性。

  11. 大型水平轴风力机多体系统的动力学分析与仿生设计%Dynamic Analysis and Bionic Design of Multi-Body System of Large-Scale Horizontal-Axis Wind Turbine

    Institute of Scientific and Technical Information of China (English)

    刘旺玉; 张勇; 陈龙

    2011-01-01

    In this paper, a dynamic model of the multi-body system of a 1.5MW direct-drive wind turbine is established with the finite element software ANSYS. Then, the natural frequency of the wind turbine is calculated, and the resonance and the stability of the system are analyzed. Moreover, the transient response of each component of the system under extreme operation gusts is discussed. The results indicate that, the tower is flexible; the system is stable and safe at normal working rotational velocity; and that, due to the difference in stiffness of the components, the variation of the tip of the wind turbine blade, which is induced by the coupling of the elastic deformations of three blades and the tower under wind loading, is more complex than that of other components. The flexible structure of the plant trunk is applied to the design of the wind turbine tower, and the feasibility of this bionic design is finally proved.%采用ANSYS建立了1.5 MW直驱风力机多体系统的动力学模型,计算了系统的固有频率,对系统的共振性和稳定性进行了分析,并探讨了在极端运行阵风下风力机系统各部件的瞬态响应振动.分析结果表明:塔架为柔塔,在正常工作转速下风力机能够安全、稳定运转;由于各个部件刚度不同,使得叶片叶尖振动较其它部件复杂,叶尖的振动是受风栽作用的三叶片与塔架弹性变形相互耦合作用的结果.最后将植物树干柔性结构应用于风力机塔架的结构设计中,说明了风力机塔架仿生设计的可行性.

  12. Bionic Control of Cheetah Bounding with a Segmented Spine

    Directory of Open Access Journals (Sweden)

    Chunlei Wang

    2016-01-01

    Full Text Available A cheetah model is built to mimic real cheetah and its mechanical and dimensional parameters are derived from the real cheetah. In particular, two joints in spine and four joints in a leg are used to realize the motion of segmented spine and segmented legs which are the key properties of the cheetah bounding. For actuating and stabilizing the bounding gait of cheetah, we present a bioinspired controller based on the state-machine. The controller mainly mimics the function of the cerebellum to plan the locomotion and keep the body balance. The haptic sensor and proprioception system are used to detect the trigger of the phase transition. Besides, the vestibular modulation could perceive the pitching angle of the trunk. At last, the cerebellum acts as the CPU to operate the information from the biological sensors. In addition, the calculated results are transmitted to the low-level controller to actuate and stabilize the cheetah bounding. Moreover, the delay feedback control method is employed to plan the motion of the leg joints to stabilize the pitching motion of trunk with the stability criterion. Finally, the cyclic cheetah bounding with biological properties is realized. Meanwhile, the stability and dynamic properties of the cheetah bounding gait are analyzed elaborately.

  13. Bionic Control of Cheetah Bounding with a Segmented Spine

    OpenAIRE

    Chunlei Wang; Shigang Wang

    2016-01-01

    A cheetah model is built to mimic real cheetah and its mechanical and dimensional parameters are derived from the real cheetah. In particular, two joints in spine and four joints in a leg are used to realize the motion of segmented spine and segmented legs which are the key properties of the cheetah bounding. For actuating and stabilizing the bounding gait of cheetah, we present a bioinspired controller based on the state-machine. The controller mainly mimics the function of the cerebellum to...

  14. Bionic Vision-Based Intelligent Power Line Inspection System.

    Science.gov (United States)

    Li, Qingwu; Ma, Yunpeng; He, Feijia; Xi, Shuya; Xu, Jinxin

    2017-01-01

    Detecting the threats of the external obstacles to the power lines can ensure the stability of the power system. Inspired by the attention mechanism and binocular vision of human visual system, an intelligent power line inspection system is presented in this paper. Human visual attention mechanism in this intelligent inspection system is used to detect and track power lines in image sequences according to the shape information of power lines, and the binocular visual model is used to calculate the 3D coordinate information of obstacles and power lines. In order to improve the real time and accuracy of the system, we propose a new matching strategy based on the traditional SURF algorithm. The experimental results show that the system is able to accurately locate the position of the obstacles around power lines automatically, and the designed power line inspection system is effective in complex backgrounds, and there are no missing detection instances under different conditions.

  15. Development of a Magnetic Attachment Method for Bionic Eye Applications.

    Science.gov (United States)

    Fox, Kate; Meffin, Hamish; Burns, Owen; Abbott, Carla J; Allen, Penelope J; Opie, Nicholas L; McGowan, Ceara; Yeoh, Jonathan; Ahnood, Arman; Luu, Chi D; Cicione, Rosemary; Saunders, Alexia L; McPhedran, Michelle; Cardamone, Lisa; Villalobos, Joel; Garrett, David J; Nayagam, David A X; Apollo, Nicholas V; Ganesan, Kumaravelu; Shivdasani, Mohit N; Stacey, Alastair; Escudie, Mathilde; Lichter, Samantha; Shepherd, Robert K; Prawer, Steven

    2016-03-01

    Successful visual prostheses require stable, long-term attachment. Epiretinal prostheses, in particular, require attachment methods to fix the prosthesis onto the retina. The most common method is fixation with a retinal tack; however, tacks cause retinal trauma, and surgical proficiency is important to ensure optimal placement of the prosthesis near the macula. Accordingly, alternate attachment methods are required. In this study, we detail a novel method of magnetic attachment for an epiretinal prosthesis using two prostheses components positioned on opposing sides of the retina. The magnetic attachment technique was piloted in a feline animal model (chronic, nonrecovery implantation). We also detail a new method to reliably control the magnet coupling force using heat. It was found that the force exerted upon the tissue that separates the two components could be minimized as the measured force is proportionately smaller at the working distance. We thus detail, for the first time, a surgical method using customized magnets to position and affix an epiretinal prosthesis on the retina. The position of the epiretinal prosthesis is reliable, and its location on the retina is accurately controlled by the placement of a secondary magnet in the suprachoroidal location. The electrode position above the retina is less than 50 microns at the center of the device, although there were pressure points seen at the two edges due to curvature misalignment. The degree of retinal compression found in this study was unacceptably high; nevertheless, the normal structure of the retina remained intact under the electrodes.

  16. Bionic Control of Cheetah Bounding with a Segmented Spine.

    Science.gov (United States)

    Wang, Chunlei; Wang, Shigang

    2016-01-01

    A cheetah model is built to mimic real cheetah and its mechanical and dimensional parameters are derived from the real cheetah. In particular, two joints in spine and four joints in a leg are used to realize the motion of segmented spine and segmented legs which are the key properties of the cheetah bounding. For actuating and stabilizing the bounding gait of cheetah, we present a bioinspired controller based on the state-machine. The controller mainly mimics the function of the cerebellum to plan the locomotion and keep the body balance. The haptic sensor and proprioception system are used to detect the trigger of the phase transition. Besides, the vestibular modulation could perceive the pitching angle of the trunk. At last, the cerebellum acts as the CPU to operate the information from the biological sensors. In addition, the calculated results are transmitted to the low-level controller to actuate and stabilize the cheetah bounding. Moreover, the delay feedback control method is employed to plan the motion of the leg joints to stabilize the pitching motion of trunk with the stability criterion. Finally, the cyclic cheetah bounding with biological properties is realized. Meanwhile, the stability and dynamic properties of the cheetah bounding gait are analyzed elaborately.

  17. A Bionic Polarization Navigation Sensor and Its Calibration Method.

    Science.gov (United States)

    Zhao, Huijie; Xu, Wujian

    2016-01-01

    The polarization patterns of skylight which arise due to the scattering of sunlight in the atmosphere can be used by many insects for deriving compass information. Inspired by insects' polarized light compass, scientists have developed a new kind of navigation method. One of the key techniques in this method is the polarimetric sensor which is used to acquire direction information from skylight. In this paper, a polarization navigation sensor is proposed which imitates the working principles of the polarization vision systems of insects. We introduce the optical design and mathematical model of the sensor. In addition, a calibration method based on variable substitution and non-linear curve fitting is proposed. The results obtained from the outdoor experiments provide support for the feasibility and precision of the sensor. The sensor's signal processing can be well described using our mathematical model. A relatively high degree of accuracy in polarization measurement can be obtained without any error compensation.

  18. On bionic architecture%浅谈仿生建筑

    Institute of Scientific and Technical Information of China (English)

    沈丽虹

    2006-01-01

    研究了生物千姿百态的规律,分别从建筑的形态、功能、结构、材料等四方面介绍了仿生原理在建筑领域中的应用,指出未来的建筑将是仿生与生态的建筑,有着很大的发展前景.

  19. Bionic Duplication of Fresh Navodon septentrionalis Fish Surface Structures

    Directory of Open Access Journals (Sweden)

    Bing Qu

    2011-01-01

    Full Text Available Biomimetic superhydrophobic surface was fabricated by replicating topography of the fresh fish skin surface of Navodon septentrionalis with polydimethylsiloxane (PDMS elastomer. A two-step replicating method was developed to make the surface structure of the fresh fish skin be replicated with high fidelity. After duplication, it was found that the static contact angle of the replica was as large as 173°. Theoretic analysis based on Young's and Cassie-Baxter (C-B model was performed to explain the relationship between structure and hydrophobicity.

  20. Fabrication of Bionic Superhydrophobic Manganese Oxide/Polystyrene Nanocomposite Coating

    Institute of Scientific and Technical Information of China (English)

    Xianghui Xu; Zhaozhu Zhang; Fang Guo; Jin Yang; Xiaotao Zhu; Xiaoyan Zhou; Qunji Xue

    2012-01-01

    A superhydrophobic manganese oxide/polystyrene (MnO2/PS) nanocomposite coating was fabricated by a facile spraying process.The mixture solution of MnO2/PS was poured into a spray gun,and then sprayed onto the copper substrate using 0.2 MPa nitrogen gas to construct superhydrophobic coating.The wettability of the composite coating was measured by sessile drop method.When the weight ratio of MnO2 to PS is 0.5:1,the maximum of contact angle (CA) (140°) is obtained at drying temperature of 180 ℃.As the content of MnO2 increases,the maximum of CA (155°) is achieved at 100 ℃.Surface morphologies and chemical composition were analyzed to understand the effect of the content of MnO2 nanorods and the drying temperature on CA.The results show that the wettability of the coating can be controlled by the content ofMnO2 nanorods and the drying temperature.Using the proposed method,the thickness of the coating can be controlled by the spraying times.If damaged,the coating can be repaired just by spraying the mixture solution again.

  1. Bionic development of textile materials for harvesting water from fog

    Science.gov (United States)

    Sarsour, J.; Stegmaier, Th.; Linke, M.; Planck, H.

    2010-07-01

    The supply of drinking water is one of the great challenges for mankind in the future. At present about one billion people have no access to clean drinking water. Particularly in developing countries the supply of potable water is often insufficient. A centralized water supply can often not be implemented because of technical and logistical problems. In certain remote areas, a connection to a public water supply net is economically or technically not feasible, e.g. in settlements on small islands, in isolated sea bays or in mountainous areas. Water supply represents a fundamental problem for terrestrial organisms. In fact, plants and animals of dry areas have developed various methods for obtaining water. The potential for a technical transfer of these natural solutions is far from being well evaluated. An example for obtaining water in arid environments is fog harvesting. Particularly in environments which receive extremely low rates of precipitation, organisms can be found which are capable of obtaining water from fog. The goal of this project is a detailed study of the underlying strategies and mechanisms and their application in technical devices for fog harvesting of drinking water. The project concentrates on the development of textile materials which are optimized for their use in large harvesting collector arrays that are able to supply multi-family houses and/or schools up to smaller villages with water. We expect that techniques can also be used in irrigation systems. The lecture presents the transfer strategy of biological strategies into textile-based devices and first successful field studies.

  2. Piezoelectric Pump Used in Bionic Underwater Propulsion Unit

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A new piezoelectric pump can pump liquid either forward or backward and adjust the flow rate. Thus an object can be driven forward or backward at different speeds. The driver of the pump, a circular piezoelectric plate, is modelled by Finite Element Method (FEM) in ANSYS and its performance is simulated and analyzed. The pump gives the best performance when the driving signals of the inlet and outlet valves have a bigger duty cycle and the plate has a higher voltage applied.

  3. Biooniline arhitektuur = Bionic Architecture / Mihkel Tüür

    Index Scriptorium Estoniae

    Tüür, Mihkel

    2008-01-01

    Autori arvates on meil tohutult õppida, jõudmaks ruumilises ja materiaalses efektiivsuses elementaarsele tasemele võrreldes loodusega. Looduses leiduvate ruumiliste struktuuride uurimine arhitektuuri rikastamiseks viib äratundmiseni tänapäeva arhitektuuri materjale raiskavast loomusest

  4. Computer-Assisted Law Instruction: Clinical Education's Bionic Sibling

    Science.gov (United States)

    Henn, Harry G.; Platt, Robert C.

    1977-01-01

    Computer-assisted instruction (CAI), like clinical education, has considerable potential for legal training. As an initial Cornell Law School experiment, a lesson in applying different corporate statutory dividend formulations, with a cross-section of balance sheets and other financial data, was used to supplement regular class assignments.…

  5. Bionic hand exoprosthesis--perspectives for the future in Romania.

    Science.gov (United States)

    Pogarasteanu, M E; Barbilian, A G

    2014-01-01

    Prosthetics is a modern area of interest and a challenge in Orthopedics. Over time, there has been a transition from an artisanal method of prosthetics production to modern concepts and materials, including a re-education through virtual reality. The conditions for an efficient fitting of a prosthesis include the necessity that the prosthesis respects the form and function of the lost limb, both anatomically and biomechanically. Prosthetics are made individually, personalized according to sex, age, physiological characteristics, profession and preference. In our country, thoracic limb prosthetics has a relatively short-recorded history of approximately a century, the most preeminent centers being in Iasi, Cluj and Bucharest. Currently, thoracic limb prosthetics, and particularly hand prosthetics, are in a period of development. A technique for amputation and stump reamputation called "circumferential osteoneuromioplasty" (CONM) is currently being used in the Orthopedics and Trauma Clinic of the Central Military University Emergency Hospital in Bucharest. The method was created with the purpose of obtaining distinct myoelectric signals of better quality, following the contraction of each muscle. The CONM method can be used in conjuncture with both the new hand prostheses that are currently available in Romania, and with the model that is being developed by a mixed team from the Polytechnic University in Bucharest, in collaboration with the Central Military University Emergency Hospital in Bucharest.

  6. Development of a BIONic muscle spindle for prosthetic proprioception.

    Science.gov (United States)

    Sachs, Nicholas A; Loeb, Gerald E

    2007-06-01

    The replacement of proprioceptive function, whether for conscious sensation or feedback control, is likely to be an important aspect of neural prosthetic restoration of limb movements. Thus far, however, it has been hampered by the absence of unobtrusive sensors. We propose a method whereby fully implanted, telemetrically operated BIONs monitor muscle movement, and thereby detect changes in joint angle(s) and/or limb posture without requiring the use of secondary components attached to limb segments or external reference frames. The sensor system is designed to detect variations in the electrical coupling between devices implanted in neighboring muscles that result from changes in their relative position as the muscles contract and stretch with joint motion. The goal of this study was to develop and empirically validate mathematical models of the sensing scheme and to use computer simulations to provide an early proof of concept and inform design of the overall sensor system. Results from experiments using paired dipoles in a saline bath and finite element simulations have given insight into the current distribution and potential gradients exhibited within bounded anisotropic environments similar to a human limb segment and demonstrated an anticipated signal to noise ratio of at least 8:1 for submillimeter resolution of relative implant movement over a range of implant displacements up to 15 cm.

  7. Image Compression and Resizing for Retinal Implant in Bionic Eye

    Directory of Open Access Journals (Sweden)

    N.Sharmili

    2011-06-01

    Full Text Available One field where computer-related Image processing technology shows great promise for the future isbionic implants such as Cochlear implants, Retinal implants etc.. Retinal implants are being developedaround the world in hopes of restoring useful vision for patients suffering from certain types of diseaseslike Age-related Macular Degeneration (AMD and Retinitis Pigmentosa (RP. In these diseases thephotoreceptor cells slowly degenerated, leading to blindness. However, many of the inner retinalneurons that transmit signals from the photoreceptors to the brain are preserved to a large extent for aprolonged period of time. The Retinal Prosthesis aims to provide partial vision by electricallyactivating the remaining cells of the retina. The Epi retinal prosthesis system is composed of twounits, extra ocular unit and intraocular implant. The two units are connected by a telemetric inductivelink. The Extraocular unit consists of a CCD camera, an image processor, an encoder, and a transmitterbuilt on the eyeglass. High-resolution image from a CCD camera is reduced to lower resolutionmatching the array of electrodes by image processor, which is then encoded into bit stream. Eachelectrode in an implant corresponds to one pixel in an image. The bit stream is modulated on a 22 MHzcarrier and then transmitted wirelessly to the inside implant. This paper mainly discusses twoapproaches in image processing which reduces the size of the image without loss of the object detectionrate to that of the original image. One is about the related image processing algorithms include imageresizing, color erasing, edge enhancement and edge detection. Second one is to generate the saliencymap for an image.

  8. Advances in implantable bionic devices for blindness: a review.

    Science.gov (United States)

    Lewis, Philip M; Ayton, Lauren N; Guymer, Robyn H; Lowery, Arthur J; Blamey, Peter J; Allen, Penelope J; Luu, Chi D; Rosenfeld, Jeffrey V

    2016-09-01

    Since the 1950s, vision researchers have been working towards the ambitious goal of restoring a functional level of vision to the blind via electrical stimulation of the visual pathways. Groups based in Australia, USA, Germany, France and Japan report progress in the translation of retinal visual prosthetics from the experimental to clinical domains, with two retinal visual prostheses having recently received regulatory approval for clinical use. Regulatory approval for cortical visual prostheses is yet to be obtained; however, several groups report plans to conduct clinical trials in the near future, building upon the seminal clinical studies of Brindley and Dobelle. In this review, we discuss the general principles of visual prostheses employing electrical stimulation of the visual pathways, focusing on the retina and visual cortex as the two most extensively studied stimulation sites. We also discuss the surgical and functional outcomes reported to date for retinal and cortical prostheses, concluding with a brief discussion of novel developments in this field and an outlook for the future.

  9. A Bionic Polarization Navigation Sensor and Its Calibration Method

    Science.gov (United States)

    Zhao, Huijie; Xu, Wujian

    2016-01-01

    The polarization patterns of skylight which arise due to the scattering of sunlight in the atmosphere can be used by many insects for deriving compass information. Inspired by insects’ polarized light compass, scientists have developed a new kind of navigation method. One of the key techniques in this method is the polarimetric sensor which is used to acquire direction information from skylight. In this paper, a polarization navigation sensor is proposed which imitates the working principles of the polarization vision systems of insects. We introduce the optical design and mathematical model of the sensor. In addition, a calibration method based on variable substitution and non-linear curve fitting is proposed. The results obtained from the outdoor experiments provide support for the feasibility and precision of the sensor. The sensor’s signal processing can be well described using our mathematical model. A relatively high degree of accuracy in polarization measurement can be obtained without any error compensation. PMID:27527171

  10. Chip-scale hermetic feedthroughs for implantable bionics.

    Science.gov (United States)

    Guenther, Thomas; Dodds, Christopher W D; Lovell, Nigel H; Suaning, Gregg J

    2011-01-01

    Most implantable medical devices such as cochlear implants and visual prostheses require protection of the stimulating electronics. This is achieved by way of a hermetic feedthrough system which typically features three important attributes: biocompatibility with the human body, device hermeticity and density of feedthrough conductors. On the quest for building a visual neuroprosthesis, a high number of stimulating channels is required. This has encouraged new technologies with higher rates of production yield and further miniaturization. An Al(2)O(3) based feedthrough system has been developed comprising up to 20 platinum feedthroughs per square millimeter. Ceramics substrates are shown to have leak rates below 1 × 10(-12) atm × cc/s, thus exceeding the resolution limits of most commercially available leak detectors. A sheet resistance of 0.05 Ω can be achieved. This paper describes the design, fabrication process and hermeticity testing of high density feedthroughs for use in neuroprosthetic implants.

  11. Biological and bionic hands: natural neural coding and artificial perception.

    Science.gov (United States)

    Bensmaia, Sliman J

    2015-09-19

    The first decade and a half of the twenty-first century brought about two major innovations in neuroprosthetics: the development of anthropomorphic robotic limbs that replicate much of the function of a native human arm and the refinement of algorithms that decode intended movements from brain activity. However, skilled manipulation of objects requires somatosensory feedback, for which vision is a poor substitute. For upper-limb neuroprostheses to be clinically viable, they must therefore provide for the restoration of touch and proprioception. In this review, I discuss efforts to elicit meaningful tactile sensations through stimulation of neurons in somatosensory cortex. I focus on biomimetic approaches to sensory restoration, which leverage our current understanding about how information about grasped objects is encoded in the brain of intact individuals. I argue that not only can sensory neuroscience inform the development of sensory neuroprostheses, but also that the converse is true: stimulating the brain offers an exceptional opportunity to causally interrogate neural circuits and test hypotheses about natural neural coding.

  12. Numerical simulation of bionic foils in tandem arrangement

    Directory of Open Access Journals (Sweden)

    Kai Zhou

    2016-05-01

    Full Text Available Based on the backgrounds of underwater propulsors with high hydrodynamic performance, the article focuses on the flapping foils in tandem arrangement and tries to formulate the physical mode and mathematical model of flapping propulsion. Using the commercial software Fluent, the governing equations are discretized by the finite volume method, and dynamic mesh method is adopted to solve the moving boundaries. In order to verify validity and feasibility of the method, hydrodynamic performance of single flapping foil is analyzed. The present results of single flapping foil compare well with those in experimental researches. After that, numerical simulations of flapping foils in tandem arrangement are conducted to reveal the energy absorption mechanisms. By extracting performance parameters and characteristics of the flow field, the interaction between upstream foil and downstream foil is analyzed. The results indicate that the vortices shedding from upstream foil have a significant effect on the hydrodynamic performance of downstream foil, and the downstream foil can use energy from the flow field to improve the hydrodynamic performance. Therefore, the hydrodynamic performance of the system can be improved by adjusting the locations of foils and motion parameters.

  13. FY 1997 research and development of fusion domains. Part 2. Studies on bionic design; 1997 nendo seika hokokusho (yugo ryoiki kenkyu kaihatsu). 1. Bionic design no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    Studies were conducted on actuator function in bio materials, cells, structures, and living organisms, and on structuring a biological molecule machine. In the study on soft biological structures, biological compatibility of artificial glass bodies using ultra-polymeric PVA was found very high, raising expectation on feasibility of their practical use. Three-dimensional structure of glass bodies was made clear for the first time in the world. As a result of separating and purifying cells from a liver for the first time in the world, it was indicated that excellent proliferation performance and differentiation into cells are shown. With regard to hydroxyapatite in hard biological structure such as bones and teeth, single crystals were synthesized, and growth rate on the surface C was measured successfully. For molecular motors, studies are being performed on functions of twin-head structure in biological protein enzyme. In molecule structuring, studies were conducted on preparation of a hydrogenase LB membrane as an electric-hydrogen energy conversion element, and structuring of protein molecular structure using gene recombination. 69 refs., 37 figs., 8 tabs.

  14. A bridge between unified cosmic history by f( R)-gravity and BIonic system

    Science.gov (United States)

    Sepehri, Alireza; Capozziello, Salvatore; Setare, Mohammad Reza

    2016-04-01

    Recently, the cosmological deceleration-acceleration transition redshift in f( R) gravity has been considered in order to address consistently the problem of cosmic evolution. It is possible to show that the deceleration parameter changes sign at a given redshift according to observational data. Furthermore, a f( R) gravity cosmological model can be constructed in brane-antibrane system starting from the very early universe and accounting for the cosmological redshift at all phases of cosmic history, from inflation to late time acceleration. Here we propose a f( R) model where transition redshifts correspond to inflation-deceleration and deceleration-late time acceleration transitions starting froma BIon system. At the point where the universe was born, due to the transition of k black fundamental strings to the BIon configuration, the redshift is approximately infinity and decreases with reducing temperature (z˜ T2). The BIon is a configuration in flat space of a universe-brane and a parallel anti-universe-brane connected by a wormhole. This wormhole is a channel for flowing energy from extra dimensions into our universe, occurring at inflation and decreasing with redshift as z˜ T^{4+1/7}. Dynamics consists with the fact that the wormhole misses its energy and vanishes as soon as inflation ends and deceleration begins. Approaching two universe branes together, a tachyon is originated, it grows up and causes the formation of a wormhole. We show that, in the framework of f( R) gravity, the cosmological redshift depends on the tachyonic potential and has a significant decrease at deceleration-late time acceleration transition point (z˜ T^{2/3}). As soon as today acceleration approaches, the redshift tends to zero and the cosmological model reduces to the standard Λ CDM cosmology.

  15. Restudies on Body Surface of Dung Beetle and Application of Its Bionics Flexible Technique

    Institute of Scientific and Technical Information of China (English)

    Jiurong Sun; Jianqiao Li; Hong Cheng; Zhendong Dai; Luquan Ren

    2004-01-01

    A scanning electron microscope was used to observe the structures of the setae on the surface of a dung beetle Copris ochus, Motschulsky. There are lots of setae on the body surface, especially on the ventral part surface and lateral to the legs which are different in size, arrangement and shape. These setae have different lengths and many thorns on the whole seta. The top ends of these setae stand up without furcations which direct uprightly towards the surface of the touched soil. By the method of removing these setae, getting the insect weight before and after digging into the dung we affirm farther that the setae on the beetle body surface form the anti-stick and non-adherent gentle interface. The soil machines and components made by imitating the gentle body surface of beetles have favorable non-adherent results.

  16. A Review of Artificial Lateral Line in Sensor Fabrication and Bionic Applications for Robot Fish

    Directory of Open Access Journals (Sweden)

    Guijie Liu

    2016-01-01

    Full Text Available Lateral line is a system of sense organs that can aid fishes to maneuver in a dark environment. Artificial lateral line (ALL imitates the structure of lateral line in fishes and provides invaluable means for underwater-sensing technology and robot fish control. This paper reviews ALL, including sensor fabrication and applications to robot fish. The biophysics of lateral line are first introduced to enhance the understanding of lateral line structure and function. The design and fabrication of an ALL sensor on the basis of various sensing principles are then presented. ALL systems are collections of sensors that include carrier and control circuit. Their structure and hydrodynamic detection are reviewed. Finally, further research trends and existing problems of ALL are discussed.

  17. 产品仿生设计探究%Search on bionics product design

    Institute of Scientific and Technical Information of China (English)

    刘青春; 何霞

    2006-01-01

    从产品自身的各要素来探究仿生设计的应用,相应地表现为对自然界万事万物的形、色、音、功能、结构等为研究对象,同时结合仿生学的研究成果,运用实例进行深入阐释,分析和探讨这一新的设计方法和理念.形成产品仿生设计系统观,为产品设计提供了新的思路和借鉴手法.

  18. Infrared-based blink-detecting glasses for facial pacing: toward a bionic blink.

    Science.gov (United States)

    Frigerio, Alice; Hadlock, Tessa A; Murray, Elizabeth H; Heaton, James T

    2014-01-01

    IMPORTANCE Facial paralysis remains one of the most challenging conditions to effectively manage, often causing life-altering deficits in both function and appearance. Facial rehabilitation via pacing and robotic technology has great yet unmet potential. A critical first step toward reanimating symmetrical facial movement in cases of unilateral paralysis is the detection of healthy movement to use as a trigger for stimulated movement. OBJECTIVE To test a blink detection system that can be attached to standard eyeglasses and used as part of a closed-loop facial pacing system. DESIGN, SETTING, AND PARTICIPANTS Standard safety glasses were equipped with an infrared (IR) emitter-detector unit, oriented horizontally across the palpebral fissure, creating a monitored IR beam that became interrupted when the eyelids closed, and were tested in 24 healthy volunteers from a tertiary care facial nerve center community. MAIN OUTCOMES AND MEASURES Video-quantified blinking was compared with both IR sensor signal magnitude and rate of change in healthy participants with their gaze in repose, while they shifted their gaze from central to far-peripheral positions, and during the production of particular facial expressions. RESULTS Blink detection based on signal magnitude achieved 100% sensitivity in forward gaze but generated false detections on downward gaze. Calculations of peak rate of signal change (first derivative) typically distinguished blinks from gaze-related eyelid movements. During forward gaze, 87% of detected blink events were true positives, 11% were false positives, and 2% were false negatives. Of the 11% false positives, 6% were associated with partial eyelid closures. During gaze changes, false blink detection occurred 6% of the time during lateral eye movements, 10% of the time during upward movements, 47% of the time during downward movements, and 6% of the time for movements from an upward or downward gaze back to the primary gaze. Facial expressions disrupted sensor output if they caused substantial squinting or shifted the glasses. CONCLUSIONS AND RELEVANCE Our blink detection system provides a reliable, noninvasive indication of eyelid closure using an invisible light beam passing in front of the eye. Future versions will aim to mitigate detection errors by using multiple IR emitter-detector units mounted on glasses, and alternative frame designs may reduce shifting of the sensors relative to the eye during facial movements.

  19. New bionic navigation algorithm based on the visual navigation mechanism of bees

    Science.gov (United States)

    Huang, Yufeng; Liu, Yi; Liu, Jianguo

    2015-04-01

    Through some research on visual navigation mechanisms of flying insects especially honeybees, a novel navigation algorithm integrating entropy flow with Kalman filter has been introduced in this paper. Concepts of entropy image and entropy flow are also introduced, which can characterize topographic features and measure changes of the image respectively. To characterize texture feature and spatial distribution of an image, a new concept of contrast entropy image has been presented in this paper. Applying the contrast entropy image to the navigation algorithm to test its' performance of navigation and comparing with simulation results of intensity entropy image, a conclusion that contrast entropy image performs better and more robust in navigation has been made.

  20. Controlled synthesis of bionic microstructure PbS crystals by mixed cationic/anionic surfactants

    Science.gov (United States)

    Li, Yanjie; Hu, Yongan; Zhang, Hui; Shen, Yuhua; Xie, Anjian

    2013-07-01

    Hexagonal starfish-like PbS crystals have been synthesized by the reaction of lead acetate and thioacetamide (TAA) controlled by mixture of cetyltrimethylammonium bromide/sodium dodecyl sulfate (STAB/SDS) at the molar ratio of 5: 1 through a hydrothermal process at 80°C. It has been found that the hexagonal starfish-like PbS single crystal is in cubic phase, and the six arms of the star extend along the six directions. By changing reaction conditions, such as the molar ratio of CTAB/SDS, temperature, and reaction time, the amounts of TAA and lead sources, the morphology and structure of the PbS crystals can be controlled. Furthermore, possible formation mechanism was preliminarily illustrated. The room-temperature photoluminescence spectra in solid state of the PbS single crystals obtained after different reaction times were investigated, which demonstrated that the PbS single crystals presented excellent optical properties. This work may open a novel route to the shaped-controllable synthesis of semiconductor crystals with various morphologies.

  1. Design of a Bionic Cilia MEMS three-dimensional vibration sensor

    Science.gov (United States)

    Zhen, Li; Guojun, Zhang; Chenyang, Xue; Shujuan, Wu

    2013-11-01

    A biomimetic three-dimensional piezoresistive vibration sensor based on MEMS technology is reported. The mechanical properties of the sensor are analyzed and the static and dynamic characteristics of the sensor are simulated by ANSYS Workbench 12.0. The structure was made by MEMS processes including lithography, ion implantation, PECVD, etching, etc. Finally, the sensor is tested by using a TV5220 sensor auto calibration system. The results show that the lowest sensitivity of the sensor is 394.7 μV/g and can reach up to 460.2 μV/g, and the dimension coupling is less than 0.6152%, and the working frequency range is 0-1000 Hz.

  2. 生态建筑与仿生建筑(上)%Ecological Architecture and Bionic Architecture

    Institute of Scientific and Technical Information of China (English)

    王其钧

    2008-01-01

    在当前全球面临资源短缺、污染严重的严峻局势下,如何使建筑能够减少能耗,并使建筑能够给人提供一个绿色的空间,也成为摆在国内建筑师以及建筑行业面前的一个难题.生态建筑和仿生建筑是其中的一种解决方法.本文以笔者对于因外建筑界最新动态较为熟悉的知识背景,介绍了大量的近年来国际上最具代表性的生态建筑和仿生建筑.而且其中绝大多数的作品都是国际著名建筑师的作品.这对于国内的建筑设计以及建筑学教育都会起到较好的启发作用.

  3. 生态建筑与仿生建筑(下)%Ecological Architecture and Bionic Architecture

    Institute of Scientific and Technical Information of China (English)

    王其钧

    2008-01-01

    @@ (续2D08年第4期P21) 仿生建筑 大自然是人类生存的场所,也是人类知识的重要来源.从人类最初的木结构棚屋,到当代的摩天楼和航天飞机,自然界一直是人类获取各种资源和能量的补给所.

  4. Discussion on bionic construction design%建筑仿生设计浅谈

    Institute of Scientific and Technical Information of China (English)

    李光辉; 杨子胜; 吴金洪

    2008-01-01

    在回顾建筑仿生设计发展历史的基础上,对仿生设计进行了分类,分析了建筑仿生设计现状,并总结出了影响建筑仿生设计发展的因素,提出了建筑仿生设计的原则,以达到改善现代技术并创造新的工艺技术的目的.

  5. EMG control of a bionic knee prosthesis: exploiting muscle co-contractions for improved locomotor function.

    Science.gov (United States)

    Dawley, James A; Fite, Kevin B; Fulk, George D

    2013-06-01

    This paper presents the development and experimental evaluation of a volitional control architecture for a powered-knee transfemoral prosthesis that affords the amputee user with direct control of knee impedance using measured electromyogram (EMG) potentials of antagonist muscles in the residual limb. The control methodology incorporates a calibration procedure performed with each donning of the prosthesis that characterizes the co-contraction levels as the user performs volitional phantom-knee flexor and extensor contractions. The performance envelope for EMG control of impedance is then automatically shaped based on the flexor and extensor calibration datasets. The result is a control architecture that is optimized to the user's current co-contraction activity, providing performance robustness to variation in sensor placement or physiological changes in the residual-limb musculature. Experimental results with a single unilateral transfemoral amputee user demonstrate consistent and repeatable control performance for level walking at self-selected speed over a multi-week, multi-session period of evaluation.

  6. 古今城市仿生思想%Urban bionic idea of ancient and modern

    Institute of Scientific and Technical Information of China (English)

    陈珊

    2006-01-01

    从城市仿生的角度,介绍了中国古代的一些仿生城市,把握建设会"呼吸"的绿色城市的宗旨,挖掘城市发展中较强的可塑性和巨大的发展潜力,从城市的"皮"、"骨"、"肉"、"器官"四个方面阐述了如何将城市的建设与仿生学结合起来,利用仿生思想创造绿色和谐城市.

  7. The Bionic DBMS is Coming, but What Will It Look Like?

    OpenAIRE

    Johnson, Ryan; Pandis, Ippokratis

    2013-01-01

    Software has always ruled database engines, and commodity processors riding Moore's Law doomed database machines of the 1980s from the start. However, today's hardware landscape is very different, and moving in directions that make database machines increasingly attractive. Stagnant clock speeds, looming dark silicon, availability of reconfigurable hardware, and the economic clout of cloud providers all align to make custom database hardware economically viable or even necessary. Dataflow wor...

  8. 生态建筑与仿生建筑(上)%Ecological Architecture and Bionic Architecture

    Institute of Scientific and Technical Information of China (English)

    王其钧; 李浈

    2009-01-01

    在当前全球面临资源短缺、污染严重的严峻局势下,如何使建筑能够减少能耗,并使建筑能够给人提供一个绿色的空间,也成为摆在国内建筑师以及建筑行业面前的一个难题.生态建筑和仿生建筑是其中的一种解决方法.本文以笔者对于国外建筑界最新动态较为熟悉的知识背景,介绍了大量的近年来国际上最具代表性的生态建筑和仿生建筑,而且其中绝大多数的作品都是国际著名建筑师的作品.这对于国内的建筑设计以及建筑学教育都会起到较好的启发作用.

  9. New Discussion about Architectural Bionic%建筑仿生新论

    Institute of Scientific and Technical Information of China (English)

    王科奇

    2005-01-01

    人类文明的进化离不开向大自然学习,大自然中很多物象的特性和形象给我们启迪,同样也会对建筑的创新产生影响,建筑仿生是科学、技术、艺术、自然的有机结合.建筑仿生是建筑创新的源泉之一.该文结合实例分析了建筑仿生的几种方式,提出建筑仿生包括结构仿生、形态仿生、生物特性仿生几种类型,并对每种类型进行了简要的分析.

  10. 仿生建筑设计%Design of bionic architecture

    Institute of Scientific and Technical Information of China (English)

    姚晓微; 沈明磊

    2006-01-01

    结合目前人类面临的生存危机以及人的自然属性对仿生建筑两大基本因素--生态技术和自然人文进行的分析,并通过回顾仿生建筑由具象感性到抽象理性的历史,得出当今仿生建筑这一趋势发展的必然性.

  11. 仿生建筑浅析%An Analysis of the Bionic Architecture

    Institute of Scientific and Technical Information of China (English)

    杨小峰; 罗文缓

    2005-01-01

    物种在数亿年的进化过程中形成了近乎完美的身体结构,是人类天然的学习对象.人类在其自身的发展过程中由自发到自觉的将生物自身及其构筑物方面的科学作为己用.仿生是一个永恒的话题.基于建筑仿生学从不同角度对这一课题加以探讨.

  12. 生态建筑与仿生建筑(下)%Ecological Architecture and Bionic Architecture

    Institute of Scientific and Technical Information of China (English)

    王其钧; 张建涛

    2009-01-01

    @@ (续2008年第4期P21) 仿生建筑 大自然是人类生存的场所,也是人类知识的重要来源.从人类最初的木结构棚屋,到当代的摩天楼和航天飞机,自然界一直是人类获取各种资源和能量的补给所.自然与建筑的联系更是有着深远的历史.在古典建筑中,除了建筑材料全都来源于自然以外,建筑中还要设置大量从自然界中提取而来的装饰图案.

  13. Experiment about Drag Reduction of Bionic Non-smooth Surface in Low Speed Wind Tunnel

    Institute of Scientific and Technical Information of China (English)

    Tian Li-mei; Ren Lu-quan; Han Zhi-wu; Zhang Shi-cun

    2005-01-01

    The body surface of some organisms has non-smooth structure, which is related to drag reduction in moving fluid. To imitate these structures, models with a non-smooth surface were made. In order to find a relationship be tween drag reduction and the non-smooth surface, an orthogonal design test was employed in a low speed wind tunnel. Six factors likely to influence drag reduction were considered, and each factor tested at three levels. The six factors were the configuration, diameter/bottom width, height/depth, distribution, the arrangement of the rough structures on the experimental model and the wind speed. It was shown that the non-smooth surface causes drag reduction and the distribution of non-smooth structures on the model, and wind speed, are the predominant factors affecting drag reduction. Using analysis of variance, the optimal combination and levels were obtained, which were a wind speed of 44 m/s, distribution of the non-smooth structure on the tail of the experimental model, the configuration of riblets, diameter/bottom width of 1 mm, height/depth of 0.5 mm, arranged in a rhombic formation. At the optimal combination mentioned above, the 99% confidence interval for drag reduction was 11.13 % to 22.30%.

  14. Tehran Water Museum with the Performance-Oriented Approach to Bionic Architecture

    Directory of Open Access Journals (Sweden)

    Faeghe Farokhizad

    2017-01-01

    Full Text Available Form and function of architecture in nature, is a process that is perceived as instinctive as the development of internal growth and creation. The most basic level of commitment to life that reveals itself in the form of materials. Architecture form and shape to the beat and rhythm of the invisible life, in fact, it is a process which gives the project structure and the structure of the plan. Every living organism is driven by unchangeable force. Trying to become more efficient form and function. In the natural area is very important that "performance" is defined as the process and relationship and "form" is defined as a result of this process. Forms of interaction with nature that takes shape and naturally goes in the direction of performance to match its relationship with the wider environment and in the surrounding territory. Methods and new ideas can be learned from nature. Generally architecture is defined as to imagine, design, understanding and build according to circumstances. These problems may in itself was fully functional and to varying degrees, reflecting the economic, political and social project. In any case, it seems that the status quo is not simply satisfying. For this reason, we seek a new agreement that they "answer the question" is called. Therefore, in this study, based on architectural features permit, trying to establish a performance-oriented architecture, nature-based design and natural patterns to be defined by Vitruvius

  15. Bionics in textiles: flexible and translucent thermal insulations for solar thermal applications.

    Science.gov (United States)

    Stegmaier, Thomas; Linke, Michael; Planck, Heinrich

    2009-05-13

    Solar thermal collectors used at present consist of rigid and heavy materials, which are the reasons for their immobility. Based on the solar function of polar bear fur and skin, new collector systems are in development, which are flexible and mobile. The developed transparent heat insulation material consists of a spacer textile based on translucent polymer fibres coated with transparent silicone rubber. For incident light of the visible spectrum the system is translucent, but impermeable for ultraviolet radiation. Owing to its structure it shows a reduced heat loss by convection. Heat loss by the emission of long-wave radiation can be prevented by a suitable low-emission coating. Suitable treatment of the silicone surface protects it against soiling. In combination with further insulation materials and flow systems, complete flexible solar collector systems are in development.

  16. Surface properties of bionic micro-pillar arrays with various shapes of tips

    Science.gov (United States)

    Wang, Dapeng; Zhao, Aiwu; Jiang, Rui; Li, Da; Zhang, Maofeng; Gan, Zibao; Tao, Wenyu; Guo, Hongyan; Mei, Tao

    2012-10-01

    Gecko-inspired micro-pillar arrays with various tip structures including spatular, spherical and concave tips were fabricated by a facile soft-molding method. The tip structures of micro-pillar arrays strongly depend on different curing processes in soft-molding using the same template. The adhesion and the wetting properties of these micro-pillar arrays are investigated by means of triboindenter and optical contact angle measurement. The results suggest that the surface properties are determined by different tip structures of micro-pillars. The spatular tip and concave tip are helpful for the adhesion enhancement and the shape of tip can control the contact angles and stabilities of water droplets on the micro-pillar arrays. In addition, the procedures demonstrate that the present route to fabricate gecko-inspired micro-pillar arrays with various tip structures is reliable and convenient. We believe that this research may pave the road to further understanding the gecko-inspired attachment systems and designing new artificial structures for dry adhesives.

  17. Bionics and Structural Biology: A Novel Approach for Bio-energy Production

    Institute of Scientific and Technical Information of China (English)

    C. Karthikeyan; R. Krishnan; S. Adline Princy

    2008-01-01

    Cellular metabolism is a very complex process. The biochemical pathways are fundamental structures of biology. These pathways possess a number of regeneration steps which facilitate energy shuttling on a massive scale. This facilitates the biochemical pathways to sustain the energy currency of the cells. This concept has been mimicked using electronic circuit components and it has been used to increase the efficiency of bio-energy generation. Six of the carbohydrate biochemical pathways have been chosen in which glycolysis is the principle pathway. All the six pathways are interrelated and coordinated in a complex manner. Mimic circuits have been designed for all the six biochemical pathways. The components of the metabolic pathways such as enzymes, cofactors etc., are substituted by appropriate electronic circuit components. Enzymes arc related to the gain of transistors by the bond dissociation energies of enzyme-substrate molecules under consideration. Cofactors and coen-zymes are represented by switches and capacitors respectively. Resistors are used for proper orientation of the circuits. The energy obtained from the current methods employed for the decomposition of organic matter is used to trigger the mimic circuits. A similar energy shuttle is observed in the mimic circuits and the percentage rise for each cycle of circuit functioning is found to be 78.90. The theoretical calculations have been made using a sample of domestic waste weighing 1.182 kg. The calculations arrived at finally speak of the efficiency of the novel methodology employed.

  18. Study of a Bionic Pattern Classifier Based on Olfactory Neural System

    Institute of Scientific and Technical Information of China (English)

    Xu Li; Guang Li; Le Wang; Walter J.Freeman

    2004-01-01

    Simulating biological olfactory neural system, KⅢ network, which is a high-dimensional chaotic neural network, is designed in this paper. Different from conventional artificial neural network, the KⅢ network works in its chaotic trajectory. It can simulate not only the output EEG waveform observed in electrophysiological experiments, but also the biological intelligence for pattern classification. The simulation analysis and application to the recognition of handwriting nmerals are presented here. The classification performance of the KⅢ network at different noise levels was also investigated.

  19. 终于上市啦摩托罗拉DROID BIONIC

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    近日,美国电信运营商Verizon Wireless开始发售摩托罗拉DROID BIONIC手机,这款在年初的MWC大会上就已亮相的产品,在经历了多次配置的变更后终于正式上市了。它的合约价为299美元,折合人民币约1900元,裸机价格590美元,折合人民币约3764元。

  20. Towards the bionic eye--the retina implant: surgical, opthalmological and histopathological perspectives.

    Science.gov (United States)

    Alteheld, N; Roessler, G; Walter, P

    2007-01-01

    Degenerations of the outer retina such as retinitis pigmentosa (RP) lead to blindness due to photoreceptor loss. There is a secondary loss of inner retinal cells but significant numbers of bipolar and ganglion cells remain intact for many years. Currently, no therapeutic option to restore vision in these blind subjects is available. Short-term pattern electrical stimulation of the retina using implanted electrode arrays in subjects blind from RP showed that ambulatory vision and limited character recognition are possible. To produce artificial vision by electrical retinal stimulation, a wireless intraocular visual prosthesis was developed. Images of the environment, taken by a camera are pre-processed by an external visual encoder. The stimulus patterns are transmitted to the implanted device wirelessly and electrical impulses are released by microcontact electrodes onto the retinal surface. Towards a human application, the biocompatibility of the utilised materials and the feasibility of the surgical implantation procedure were stated. In acute stimulation tests, thresholds were determined and proved to be within a safe range. The local and retinotopic activation of the visual cortex measured by optical imaging of intrinsic signals was demonstrated upon electrical retinal stimulation with a completely wireless and remotely controlled retinal implant. Potential obstacles are reviewed and further steps towards a successful prosthesis development are discussed.

  1. Eating Disorders Seen from a Bionic Perspective: Developing a scale to measure the family culture.

    OpenAIRE

    2004-01-01

    In the present study the author developed a hypothesis concerning theetiology of anorexia nervosa (AN). Based on Bion (1961)'s theory ongroups, especially the protomental system hypothesis, he postulated that thecause of AN has to be sought in two sources: family dynamics, and anindividual predisposition. That is, the author postulates that AN is the resultsof both 1) a rigid interaction between WG and baF, which leads to thefrustration of dependency needs with in the family, and 2) the anore...

  2. Evidence of Uncoupling between Renal Dysfunction and Injury in Cardiorenal Syndrome: Insights from the BIONICS Study

    Science.gov (United States)

    Legrand, Matthieu; De Berardinis, Benedetta; Gaggin, Hanna K.; Magrini, Laura; Belcher, Arianna; Zancla, Benedetta; Femia, Alexandra; Simon, Mandy; Motiwala, Shweta; Sambhare, Rasika; Di Somma, Salvatore; Mebazaa, Alexandre; Vaidya, Vishal S.; Januzzi, James L.; (GREAT), from the Global Research on Acute Conditions Team

    2014-01-01

    Objective The objective of the study was to assess urinary biomarkers of renal injury for their individual or collective ability to predict Worsening renal function (WRF) in patients with acutely decompensated heart failure (ADHF). Methods In a prospective, blinded international study, 87 emergency department (ED) patients with ADHF were evaluated with biomarkers of cardiac stretch (B type natriuretic peptide [BNP] and its amino terminal equivalent [NT-proBNP], ST2), biomarkers of renal function (creatinine, estimated glomerular filtration rate [eGFR]) and biomarkers of renal injury (plasma neutrophil gelatinase associated lipocalin [pNGAL], urine kidney injury molecule-1 [KIM-1], urine N-acetyl-beta-D-glucosaminidase [NAG], urine Cystatin C, urine fibrinogen). The primary endpoint was WRF. Results 26% developed WRF; baseline characteristics of subjects who developed WRF were generally comparable to those who did not. Biomarkers of renal function and urine biomarkers of renal injury were not correlated, while urine biomarkers of renal injury correlated between each other. Biomarker concentrations were similar between patients with and without WRF except for baseline BNP. Although plasma NGAL was associated with the combined endpoint, none of the biomarker showed predictive accuracy for WRF. Conclusions In ED patients with ADHF, urine biomarkers of renal injury did not predict WRF. Our data suggest that a weak association exists between renal dysfunction and renal injury in this setting (Clinicaltrials.gov NCT#0150153). PMID:25386851

  3. Evidence of uncoupling between renal dysfunction and injury in cardiorenal syndrome: insights from the BIONICS study.

    Directory of Open Access Journals (Sweden)

    Matthieu Legrand

    Full Text Available The objective of the study was to assess urinary biomarkers of renal injury for their individual or collective ability to predict Worsening renal function (WRF in patients with acutely decompensated heart failure (ADHF.In a prospective, blinded international study, 87 emergency department (ED patients with ADHF were evaluated with biomarkers of cardiac stretch (B type natriuretic peptide [BNP] and its amino terminal equivalent [NT-proBNP], ST2, biomarkers of renal function (creatinine, estimated glomerular filtration rate [eGFR] and biomarkers of renal injury (plasma neutrophil gelatinase associated lipocalin [pNGAL], urine kidney injury molecule-1 [KIM-1], urine N-acetyl-beta-D-glucosaminidase [NAG], urine Cystatin C, urine fibrinogen. The primary endpoint was WRF.26% developed WRF; baseline characteristics of subjects who developed WRF were generally comparable to those who did not. Biomarkers of renal function and urine biomarkers of renal injury were not correlated, while urine biomarkers of renal injury correlated between each other. Biomarker concentrations were similar between patients with and without WRF except for baseline BNP. Although plasma NGAL was associated with the combined endpoint, none of the biomarker showed predictive accuracy for WRF.In ED patients with ADHF, urine biomarkers of renal injury did not predict WRF. Our data suggest that a weak association exists between renal dysfunction and renal injury in this setting (Clinicaltrials.gov NCT#0150153.

  4. Evaluation of Arm Processor-based Bionic Intelligent Controller for a Buck-boost Converte

    Directory of Open Access Journals (Sweden)

    M.V. Mini

    2015-07-01

    Full Text Available This study focuses on performance-comparison of different tuning methods for a PI controller applied to a buck-boost converter. Comparison between the controllers is made by analysis of design methodology implementation issues and empirically measured performance. Design of PI controller is based on frequency response of the converter. The optimization of PI controller is based on ant colony algorithm. Experimental results show that, tuning the PI controller using ACO algorithm gave better performance than the conventional algorithm. This is mainly due to the fact ACO is capable of reducing the overshoot without oscillation.

  5. Traditional Chinese Medicine Bionic Tiger Bone Powder for the Treatment of AI-Associated Musculoskeletal Symptoms

    Science.gov (United States)

    Li, Yifan; Zhang, Zhenhua; Cui, Feifei; Liu, Jialing; Wang, Yitong; Jiang, Juling; Ma, Wenxin

    2017-01-01

    Background. Aromatase inhibitors (AIs) are used for adjuvant therapy of breast cancer; however AIMSS (AI-Associated Musculoskeletal Symptoms) can negatively affect quality of life and compliance. Most patients in China moved to TCM (traditional Chinese medicine) for help. TB (tiger bone) is used to treat bone disease, whose main ingredients are calcium and collagen. The objective of this study was to evaluate whether the TB prevented AIMSS in postmenopausal women with ER/PR+ breast cancer. Methods. We conducted a randomized, blind, controlled study of comparing TB versus placebo for 12 weeks in postmenopausal women with breast cancer who have taken AI for less than a month. Patients completed the M-BPI, VAS, and FACT-B at baseline, 6 weeks, and 12 weeks. M-BPI and VAS were used as the primary outcomes. FACT-B was used as the secondary outcome. Serum E2 and FSH were tested every 6 weeks. Results. Of 70 evaluable cases, 8 of 35 patients (22.9%) developed new or worsening point symptoms in TB group, compared to 21 of 35 (60%) in placebo group (P < 0.001). We also found differences between 2 groups in average pain (2 to 5.6), worst pain (3.9 to 8), pain interference severity (1.9 to 5.3), stiffness (2.4 to 6.9), and joint symptom interference (1.8 to 5.7), all P < 0.001; similar findings were seen in VAS value (3 to 6.6) at the end of intervention. HRQoL measured by FACT-B (P < 0.05) was improved. No change of serum estradiol and FSH between two groups. Conclusions. TB appeared to be effective and safe in the prevention of AIMSS. This trial is registered with ChiCTR-IPR-15007081. PMID:28250792

  6. Traditional Chinese Medicine Bionic Tiger Bone Powder for the Treatment of AI-Associated Musculoskeletal Symptoms

    Directory of Open Access Journals (Sweden)

    Yifan Li

    2017-01-01

    Full Text Available Background. Aromatase inhibitors (AIs are used for adjuvant therapy of breast cancer; however AIMSS (AI-Associated Musculoskeletal Symptoms can negatively affect quality of life and compliance. Most patients in China moved to TCM (traditional Chinese medicine for help. TB (tiger bone is used to treat bone disease, whose main ingredients are calcium and collagen. The objective of this study was to evaluate whether the TB prevented AIMSS in postmenopausal women with ER/PR+ breast cancer. Methods. We conducted a randomized, blind, controlled study of comparing TB versus placebo for 12 weeks in postmenopausal women with breast cancer who have taken AI for less than a month. Patients completed the M-BPI, VAS, and FACT-B at baseline, 6 weeks, and 12 weeks. M-BPI and VAS were used as the primary outcomes. FACT-B was used as the secondary outcome. Serum E2 and FSH were tested every 6 weeks. Results. Of 70 evaluable cases, 8 of 35 patients (22.9% developed new or worsening point symptoms in TB group, compared to 21 of 35 (60% in placebo group (P<0.001. We also found differences between 2 groups in average pain (2 to 5.6, worst pain (3.9 to 8, pain interference severity (1.9 to 5.3, stiffness (2.4 to 6.9, and joint symptom interference (1.8 to 5.7, all P<0.001; similar findings were seen in VAS value (3 to 6.6 at the end of intervention. HRQoL measured by FACT-B (P<0.05 was improved. No change of serum estradiol and FSH between two groups. Conclusions. TB appeared to be effective and safe in the prevention of AIMSS. This trial is registered with ChiCTR-IPR-15007081.

  7. Bionics and Biocybernetics Bibliography, Biodynamics and Bioengineering Division 1959-1980.

    Science.gov (United States)

    1986-09-01

    W.S. McCulloch , W.H. Pitts , "A Theory of Passive Ion Flux Through Axon Membranes", Nature, Vol. 202, pp 1138-1139, 1964 4-. M-67 W.S. McCulloch ...December 1960 M-9 W.S. McCulloch , "Symbolic Representation of the Neuron as an Unreliable Function", Principles of Self Organization, Pergamon Press...Vol. 55, pp 505-515, 1962 M-18 W.S. McCulloch , M.A. Arbib, J.D. Cowan, "Neurological Models and Integrative Processes", Self-Organizing Systems

  8. Bionic design on the model of dragonfly%仿生蜻蜓机构设计

    Institute of Scientific and Technical Information of China (English)

    郭鹏; 申功炘; 姚大鹏

    2010-01-01

    为了研究蜻蜓拍动双翼飞行时产生的流场结构.根据以往的观测结果,设计制作了能够精确模拟蜻蜓翼运动的仿生机构,用于蜻蜓高升力机制的流体力学实验研究.经测试表明,该机构可精确模拟蜻蜓翼运动,且运动重复性高,完全满足蜻蜓仿生流体力学实验要求.

  9. How to Challenge the Bionic Teacher and Generate Six Million New Ideas. The How To Series.

    Science.gov (United States)

    Bover, Ronald; And Others

    This handbook is designed to help teachers organize an effective teacher center and to develop successful workshop activities. Suggestions are made for initiating a teacher center program, using community resources, and establishing good public relations. Activities are listed for improving programs on language arts, mathematics, social studies,…

  10. [Stress analysis of artificial bionic knee joint based on UG6.0 NX NASTRAN].

    Science.gov (United States)

    Shi, Gengqiang

    2014-02-01

    This article introduces the basic principles of finite element analysis in biomechanics, focusing on the basic principles of a variety of finite element analysis software, and their respective characteristics. In addition, it also de scribes the basic stress analysis of UGNX6.0 NASTRAN analysis for artificial knee process, i. e. the choice of the type, material definition, the set of constants, finite element mesh division and the finite element results of the analysis. Finite element analysis and evaluation of the design of personalized artificial knee were carried out, so that the rationality of the geometric design of the structure of the experimental design of artificial knee has been verified.

  11. Hierarchical patterning of multifunctional conducting polymer nanoparticles as a bionic platform for topographic contact guidance.

    Science.gov (United States)

    Ho, Dominic; Zou, Jianli; Chen, Xianjue; Munshi, Alaa; Smith, Nicole M; Agarwal, Vipul; Hodgetts, Stuart I; Plant, Giles W; Bakker, Anthony J; Harvey, Alan R; Luzinov, Igor; Iyer, K Swaminathan

    2015-02-24

    The use of programmed electrical signals to influence biological events has been a widely accepted clinical methodology for neurostimulation. An optimal biocompatible platform for neural activation efficiently transfers electrical signals across the electrode-cell interface and also incorporates large-area neural guidance conduits. Inherently conducting polymers (ICPs) have emerged as frontrunners as soft biocompatible alternatives to traditionally used metal electrodes, which are highly invasive and elicit tissue damage over long-term implantation. However, fabrication techniques for the ICPs suffer a major bottleneck, which limits their usability and medical translation. Herein, we report that these limitations can be overcome using colloidal chemistry to fabricate multimodal conducting polymer nanoparticles. Furthermore, we demonstrate that these polymer nanoparticles can be precisely assembled into large-area linear conduits using surface chemistry. Finally, we validate that this platform can act as guidance conduits for neurostimulation, whereby the presence of electrical current induces remarkable dendritic axonal sprouting of cells.

  12. Proof of Concept: Model Based Bionic Muscle with Hyperbolic Force-Velocity Relation

    Directory of Open Access Journals (Sweden)

    D. F. B. Haeufle

    2012-01-01

    Full Text Available Recently, the hyperbolic Hill-type force-velocity relation was derived from basic physical components. It was shown that a contractile element CE consisting of a mechanical energy source (active element AE, a parallel damper element (PDE, and a serial element (SE exhibits operating points with hyperbolic force-velocity dependency. In this paper, a technical proof of this concept was presented. AE and PDE were implemented as electric motors, SE as a mechanical spring. The force-velocity relation of this artificial CE was determined in quick release experiments. The CE exhibited hyperbolic force-velocity dependency. This proof of concept can be seen as a well-founded starting point for the development of Hill-type artificial muscles.

  13. AN ENTROPIC OPTIMIZATION TECHNIQUE IN HETEROGENEOUS GRID COMPUTING USING BIONIC ALGORITHMS

    Directory of Open Access Journals (Sweden)

    Saad M. Darwish

    2015-12-01

    Full Text Available The wide usage of the Internet and the availability of powerful computers and high-speed networks as lowcost commodity components have a deep impact on the way we use computers today, in such a way that these technologies facilitated the usage of multi-owner and geographically distributed resources to address large-scale problems in many areas such as science, engineering, and commerce. The new paradigm of Grid computing has evolved from these researches on these topics. Performance and utilization of the grid depends on a complex and excessively dynamic procedure of optimally balancing the load among the available nodes. In this paper, we suggest a novel two-dimensional figure of merit that depict the network effects on load balance and fault tolerance estimation to improve the performance of the network utilizations. The enhancement of fault tolerance is obtained by adaptively decrease replication time and message cost. On the other hand, load balance is improved by adaptively decrease mean job response time. Finally, analysis of Genetic Algorithm, Ant Colony Optimization, and Particle Swarm Optimization is conducted with regards to their solutions, issues and improvements concerning load balancing in computational grid. Consequently, a significant system utilization improvement was attained. Experimental results eventually demonstrate that the proposed method's performance surpasses other methods.

  14. Mechatronic Wearable Exoskeletons for Bionic Bipedal Standing and Walking: A New Synthetic Approach

    Science.gov (United States)

    Onose, Gelu; Cârdei, Vladimir; Crăciunoiu, Ştefan T.; Avramescu, Valeriu; Opriş, Ioan; Lebedev, Mikhail A.; Constantinescu, Marian Vladimir

    2016-01-01

    During the last few years, interest has been growing to mechatronic and robotic technologies utilized in wearable powered exoskeletons that assist standing and walking. The available literature includes single-case reports, clinical studies conducted in small groups of subjects, and several recent systematic reviews. These publications have fulfilled promotional and marketing objectives but have not yet resulted in a fully optimized, practical wearable exoskeleton. Here we evaluate the progress and future directions in this field from a joint perspective of health professionals, manufacturers, and consumers. We describe the taxonomy of existing technologies and highlight the main improvements needed for the development and functional optimization of the practical exoskeletons. PMID:27746711

  15. A bridge between unified cosmic history by $f(R)$-gravity and BIonic system

    CERN Document Server

    Sepehri, Alireza; Setare, Mohammad Reza

    2015-01-01

    Recently, the cosmological deceleration-acceleration transition redshift in $f(R)$ gravity has been considered in order to address consistently the problem of cosmic evolution. It is possible to show that the deceleration parameter changes sign at a given redshift according to observational data. Furthermore, a $f(R)$ gravity cosmological model can be constructed in brane-antibrane system starting from the very early universe and accounting for the cosmological redshift at all phases of cosmic history, from inflation to late time acceleration. Here we propose a $f(R)$ model where transition redshifts correspond to inflation-deceleration and deceleration-late time acceleration transitions starting froma BIon system. At the point where the universe was born, due to the transition of $k$ black fundamental strings to the BIon configuration, the redshift is approximately infinity and decreases with reducing temperature ($z\\sim T^{2}$). The BIon is a configuration in flat space of a universe-brane and a parallel an...

  16. Preparation and characterization of bionic bone structure chitosan/hydroxyapatite scaffold for bone tissue engineering.

    Science.gov (United States)

    Zhang, Jiazhen; Nie, Jingyi; Zhang, Qirong; Li, Youliang; Wang, Zhengke; Hu, Qiaoling

    2014-01-01

    Three-dimensional oriented chitosan (CS)/hydroxyapatite (HA) scaffolds were prepared via in situ precipitation method in this research. Scanning electron microscopy (SEM) images indicated that the scaffolds with acicular nano-HA had the spoke-like, multilayer and porous structure. The SEM of osteoblasts which were polygonal or spindle-shaped on the composite scaffolds after seven-day cell culture showed that the cells grew, adhered, and spread well. The results of X-ray powder diffractometer and Fourier transform infrared spectrometer showed that the mineral particles deposited in the scaffold had phase structure similar to natural bone and confirmed that particles were exactly HA. In vitro biocompatibility evaluation indicated the composite scaffolds showed a higher degree of proliferation of MC3T3-E1 cell compared with the pure CS scaffolds and the CS/HA10 scaffold was the highest one. The CS/HA scaffold also had a higher ratio of adhesion and alkaline phosphate activity value of osteoblasts compared with the pure CS scaffold, and the ratio increased with the increase of HA content. The ALP activity value of composite scaffolds was at least six times of the pure CS scaffolds. The results suggested that the composite scaffolds possessed good biocompatibility. The compressive strength of CS/HA15 increased by 33.07% compared with the pure CS scaffold. This novel porous scaffold with three-dimensional oriented structure might have a potential application in bone tissue engineering.

  17. Bionic electrospun ultrafine fibrous poly(L-lactic acid) scaffolds with a multi-scale structure

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Kai; Wang Xuefen; Jing Dazheng; Yang Yin; Zhu Meifang, E-mail: wangxf@dhu.edu.c [State Key Lab for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620 (China)

    2009-06-15

    Poly(L-lactic acid) (PLLA) tissue engineering scaffolds with porous inner structures of individual fibers and controllable architectures were successfully fabricated from the homogeneous polymer-solvent-nonsolvent system (PLLA, CH{sub 2}Cl{sub 2} and DMF) by a single capillary electrospinning with certain conductive patterned templates as fiber collectors. PLLA was dissolved in dimethylformamide (DMF) and methylene chloride (CH{sub 2}Cl{sub 2}) mixed solvent with different ratios. Semi-hollow fiber with porous inner structure and compact shell wall was formed by controlling the content of DMF in the mixed solvents. It is believed that the phase separation should be the key origin for the formation of this microstructure. In order to mimic the natural extracellular matrix (ECM) with a specific structure, conductive patterned collectors were designed and employed to manufacture PLLA ultrafine fibrous scaffolds with three-dimensional architectures. We believe these kinds of multi-scale biodegradable fibrous scaffolds with specific microstructure and macro-architectures could make the electrospun fibrous scaffold better mimic the natural extracellular matrix to satisfy tissue engineering.

  18. Bionic electrospun ultrafine fibrous poly(L-lactic acid) scaffolds with a multi-scale structure.

    Science.gov (United States)

    Zhang, Kai; Wang, Xuefen; Jing, Dazheng; Yang, Yin; Zhu, Meifang

    2009-06-01

    Poly(L-lactic acid) (PLLA) tissue engineering scaffolds with porous inner structures of individual fibers and controllable architectures were successfully fabricated from the homogeneous polymer-solvent-nonsolvent system (PLLA, CH(2)Cl(2) and DMF) by a single capillary electrospinning with certain conductive patterned templates as fiber collectors. PLLA was dissolved in dimethylformamide (DMF) and methylene chloride (CH(2)Cl(2)) mixed solvent with different ratios. Semi-hollow fiber with porous inner structure and compact shell wall was formed by controlling the content of DMF in the mixed solvents. It is believed that the phase separation should be the key origin for the formation of this microstructure. In order to mimic the natural extracellular matrix (ECM) with a specific structure, conductive patterned collectors were designed and employed to manufacture PLLA ultrafine fibrous scaffolds with three-dimensional architectures. We believe these kinds of multi-scale biodegradable fibrous scaffolds with specific microstructure and macro-architectures could make the electrospun fibrous scaffold better mimic the natural extracellular matrix to satisfy tissue engineering.

  19. Sniffer dogs as part of a bimodal bionic research approach to develop a lung cancer screening.

    Science.gov (United States)

    Boedeker, Enole; Friedel, Godehard; Walles, Thorsten

    2012-05-01

    Lung cancer (LC) continues to represent a heavy burden for health care systems worldwide. Epidemiological studies predict that its role will increase in the near future. While patient prognosis is strongly associated with tumour stage and early detection of disease, no screening test exists so far. It has been suggested that electronic sensor devices, commonly referred to as 'electronic noses', may be applicable to identify cancer-specific volatile organic compounds in the breath of patients and therefore may represent promising screening technologies. However, three decades of research did not bring forward a clinically applicable device. Here, we propose a new research approach by involving specially trained sniffer dogs into research strategies by making use of their ability to identify LC in the breath sample of patients.

  20. Experimental research and identification of mine fire by using bionic smell sensors array

    Energy Technology Data Exchange (ETDEWEB)

    Yang Hong-min; Luo Hai-zhu [Henan Polytechnic University, Jiaozuo (China). Institute of Safety Science and Engineering

    2007-08-15

    The paper discusses the present situation of smell identification technology and give a brief account of kinds of smell sensors and their development. The sensitivity of the smell sensors array to different odors, the identification mechanism of different odor source substances and their mixture ratio were studied. The change of background value with working conditions underground and its influence on smell sensors were studied. Results indicate that the small sensors array can identify the kinds of mine fire, the burning objects, and the mixing ratio, based on the ANN. 5 refs., 6 figs.

  1. “Digital Dentistry” & “Bionic Dentist” the Future of Dentistry Today

    Directory of Open Access Journals (Sweden)

    Alexandre Khairallah

    2015-03-01

    Full Text Available Within the last twenty-five years, the advent of computer has revolutionized our life in general and our work as dentists in particular. Incorporation of digital technology is now becoming an integral part of contemporary dentistry. It has widely modified the traditional diagnostic techniques, disease interpretations, management protocols, treatment outcomes, record keeping and even the teaching sessions in dental schools. For some enthusiastic “bionic” dentists the symbolic representation of dentistry, with a dental mirror and a periodontal probe, is becoming “obsolete” and being replaced by intraoral cameras, digital X-rays, pulp testers and other digital modalities

  2. FY 1996 Report on the research and development project for interdisciplinary area. Part.2. Research on bionic designs; 1996 nendo yugo ryoiki kenkyu kaihatsu. 2. Bionic design ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The objects of this project are to elucidate the self-organization mechanisms of a living body, e.g., functional adaptation to environments and self-restoration, to utilize the molecular interactions in a living body, and thereby to establish the basic technologies for developing molecular motor functions, e.g., artificial organs. Described herein are the FY 1996 results. For creation of living soft tissues, N-ePTFE and Gf are found to be good base materials for cell growth in the serum-free culture, and may be applicable to bio-reactors. Sugar-bound high-molecular-weight compounds and artificial hyaloid body are created. For hard tissue materials, e.g., artificial articulation, the macrophage is activated by englobing worn debris of polyethylene, to activate the broken bone cells that absorb the bone, causing the artificial articulation to become loose. For researches on molecular motor mechanisms, it is considered that myosin changes the head morphology to give a driving force to the muscle, and this concept is studied in detail. The photosynthesizing protein is a molecule related to light and electricity, and is useful as the material to apply the living functions to industrial technologies. The technologies for assembling molecules are studied by utilizing the self-organization functions of living molecules. Development of other molecular machines is also attempted. (NEDO)

  3. 仿生驱蚊虫人造草丝的开发%Development of Bionic Mosquito Repelling Artificial Turf

    Institute of Scientific and Technical Information of China (English)

    王伟; 李环环; 李胜业

    2015-01-01

    以人造草丝加工成型工艺为基础,制备了仿生驱蚊虫人造草丝纤维,并研究了其特性.结果表明:添加经超细化处理的天然驱蚊虫中草药粉,可以有效地驱散蚊虫.伴随温度的升高,其释放效果增强,驱蚊虫效果优异.其中蚊净香草在人造草丝配方体系中添加5~8份,可以达到人造草坪垂直高度3 m内无蚊虫的驱蚊虫效果,且基本不影响人造草丝力学性能.

  4. Research on Bionic Hexapod Robot Based on ARM%基于ARM的仿生六足机器人研究

    Institute of Scientific and Technical Information of China (English)

    雷永锋; 卢博友; 孙莉莉; 朱孟强

    2008-01-01

    本文依据仿生学原理提出了三角步态走法及六足机器人行走规律,在此基础上设计了机器人的车体结构.该车体以SAMSUNG公司的S3C44BOX芯片为微控制器,并辅以外围电路和行走装置.在程序设计时引入了虚拟力场算法,并将控制程序和嵌入式操作系统uC/OS-Ⅱ移植到ARM内核中,实现对机器人行走路径的控制.

  5. A bionic crab-like robot prototype%仿生机器蟹样机研究

    Institute of Scientific and Technical Information of China (English)

    王立权; 孙磊; 陈东良; 张玲; 孟庆鑫

    2005-01-01

    文中介绍的仿生机器蟹具有8足,24个自由度,基于ARM的双层分布式递阶控制方式,通过多传感器获取环境信息,调节身体的姿态,目标是可以自主地在海滩、礁石区和崎岖不平的环境行走.文中介绍了仿生机器蟹原理试验样机研制的过程和主要研究方法,主要包括生物原形分析、模型的建立、运动学分析、步态问题、机械结构设计、控制系统设计和原理样机的试验等内容.在单步行足的控制实验的基础上,进行了原理样机的整机行走实验研究.仿生机器蟹能够实现前进、后退、横行、转弯等功能,并具有一定的越障能力.进行仿生机器蟹的研究,目地是建立多足步行机器人的研究平台.

  6. 画像机器人手臂运动学研究%Kinematics simulation of painting robot bionics arm

    Institute of Scientific and Technical Information of China (English)

    满翠华; 范迅; 李成荣

    2007-01-01

    1前言 随着机器人技术研究的深人和发展,人们越来越倾向于研究类似于人类,能够模仿人类特定行为的类人机器人。书写和绘画是人类的重要特征之一,因此研制能模仿人类的书写和绘画功能的机器人是人类的愿望之一。机器人要模仿人类的书写和绘画离不开机构设计。对于画像机器人来说,最重要的是多自由度机器人手臂的机构设计,因此,对画像机器人的手臂进行研究,具有重要的实践价值。

  7. 7自由度仿人手臂运动学研究%Kinematics of service robot bionics arm

    Institute of Scientific and Technical Information of China (English)

    时凯飞; 李瑞峰

    2003-01-01

    介绍了服务机器人7自由度仿人手臂运动学分析的方法,对逆运动学求解采用两种方式:一种是将7自由度退化成6自由度来求运动学逆解;另一种是将机器人手臂分成臂和腕两部分,采用位姿分离法来求运动学逆解,体现了冗余度特性.两种方法简化了逆运动学求解,计算量都比较小,适合实时控制.

  8. The Symbolic Analysis of Bionic Product%仿生产品造型中的符号分析

    Institute of Scientific and Technical Information of China (English)

    康红娜

    2009-01-01

    人类的设计活动从设计的萌芽阶段到手工艺设计阶段,再到工业设计阶段,经历了漫长的过程,经历了众多风格的演变.随着人们需求的不断变化,"形式追随功能"和"形式与功能并重"的设计方针已不再合乎现代人的需求品味,人们开始追逐一种能够和他们产生情感共鸣的全新的形式,因此,能够传达特定语义和符号的仿生学成为大家所追求的目标.

  9. Discussion on Bionics Design of Product Form%论产品形态仿生设计

    Institute of Scientific and Technical Information of China (English)

    李芬; 蔡建平; 李理

    2007-01-01

    论述了形态仿生设计的原理,结合产品实例,分析了产品造型中仿生设计的特点及创新性,指出形态仿生设计作为现代产品造型设计的重要设计方法之一,必将成为未来产品造型设计的一大发展趋势.

  10. Microorganism Nutrition Processes as a General Route for the Preparation of Bionic Nanocomposites Based on Intractable Polymers.

    Science.gov (United States)

    Valentini, L; Bon, S Bittolo; Pugno, N M

    2016-08-31

    In this paper the fermentation process activated by living microorganisms of the baker's yeast is proposed as a facile assembly method of hybrid nanoparticles at liquid interface. Water dispersion of commercial baker's yeast extract used for bread production, graphene nanoplatelets (GNPs), and carbon nanotubes (CNTs) were added to oil/water interface; when the yeast is activated by adding sugar, the byproduct carbon dioxide bubbles migrate from the water phase to the oil/water interface generating a floating nanostructured film at liquid interface where it is trapped. Starting from this simple method, we propose a general approach for the stabilization of intractable poly(etheretherketone) polymeric particles with GNPs and CNTs at immiscible liquid interface. This process allowed the formation of sintered porous composites with improved mechanical properties. The porous structure of the composites gave rise to a low thermal conductivity making them good candidates for thermal insulating applications. Liquid absorption by these porous composites has been also reported. We believe that this new approach may have applications in the large scale fabrication of nanomaterials and is particularly suited for the preparation of nanocomposites starting from polymers that are intractable by solvent casting.

  11. The Application of Bionics in Space Structures%仿生学在空间结构中的妙用

    Institute of Scientific and Technical Information of China (English)

    魏清桥

    2009-01-01

    仿生建筑不仅能让人类回归自然,享受舒适生活,还能够避免不必要的浪费,将是21世纪和以后更长一段时间內的发展主流.仿生建筑会促进建筑多元化和人类总体文明的发展,是解决世界能源危机的最佳途径之一.本文对建筑仿生学在世界范围內的应用进行了探讨.

  12. Method of Bionic Arcology Design%生态仿生建筑的设计方法

    Institute of Scientific and Technical Information of China (English)

    张海燕; 胡卫华

    2008-01-01

    生态仿生建筑设计是生态建筑设计的重要手段之一.本文界定了仿生设计、生态建筑和生态仿生建筑的概念,比较了生态建筑与生态仿生建筑的异同,分析了生态仿生建筑设计的实质和内容,并在此基础上探讨了生态仿生建筑的设计策略.以此来丰富生态建筑的理论,指导生态仿生建筑的设计实践.

  13. 仿生学在建筑设计中的应用%The application of bionics in architectural design

    Institute of Scientific and Technical Information of China (English)

    王立福; 单欣; 李尧

    2008-01-01

    从城市环境仿生、造型仿生、功能仿生、结构仿生以及建筑材料仿生等方面探讨了仿生学在建筑设计中的应用,指出建筑仿生应注意环境生态、经济效益与形式新颖的有机结合,从而促进建筑业的不断发展.

  14. 仿生建筑学及其应用研究%The bionic architecture and its application research

    Institute of Scientific and Technical Information of China (English)

    陶建红

    2015-01-01

    基于仿生建筑学的应用现状,从建筑形态、结构、功能、材料四个方面阐述了仿生建筑的设计思路,指出现代生物是物竞天择、适者生存的优胜者,仿生建筑必将成为未来建筑发展的趋势.

  15. Bionic Idea in the Architectural Design%建筑设计中的仿生理念

    Institute of Scientific and Technical Information of China (English)

    李兵; 崔念迅

    2005-01-01

    当前,在我国的建筑设计人员的设计理念中,对仿生与建筑的有机结合还较欠缺,对仿生建筑的美妙曲线、强大力学稳定性能、低耗材的建造成本等优点还需加强学习;对于人们发出"回归大自然"的强烈呼吁,需要我们具有不断"变异"、"更新"的观念,做好仿生在建筑领域的应用与推广.

  16. Approaching Architecture Bionics Based on Study of Placts Roots%植物的根和建筑仿生

    Institute of Scientific and Technical Information of China (English)

    岳喜军; 雷胜友; 刘鹏; 惠会清

    2010-01-01

    本文在简要介绍建筑仿生学和常见四种建筑仿生学应用分类的基础上,着重阐述了其中一种建筑形式仿生学在基础工程中的应用,根据植物根的不同形态,分别阐述了几种变态根和侧根可应用于基础工程上的有益启示,相信不久的将来建筑基础对植物根的仿生将给工程界带来更多的成果.

  17. 仿生建筑的美学价值初探%Aesthetic value discussion of the bionic building

    Institute of Scientific and Technical Information of China (English)

    杨晓姝

    2008-01-01

    对仿生设计学进行了介绍,分析了对仿生建筑美学价值研究的意义,从形象性、感染性、功利性和创造性等方面对仿生建筑的美学价值进行了探讨,以开拓建筑设计思路,促进仿生建筑的研究和发展.

  18. 仿复眼式信息交互技术%Simulating the Communication of Bionic Compound Eye

    Institute of Scientific and Technical Information of China (English)

    严世华; 何永强

    2007-01-01

    介绍了某红外探测系统的工作原理和基本构成,在战场中各种光电干扰严重的情况下,为准确可靠地排除敌方的假目标和干扰目标,提取弱小目标,使用TMS320F2812 DSP模仿复眼中央视觉区与边缘视觉区的信息交互功能,建立大范围凝视搜索系统与精确跟踪系统以及不同波段的各精确跟踪系统的信息交互网络,达到大范围搜索,高精度跟踪的效果.试验证明,该方法切实可行,有效提高了光电对抗能力,降低了系统虚警率.

  19. Advances in bionic study on insects' compound eyes%昆虫复眼的仿生研究进展

    Institute of Scientific and Technical Information of China (English)

    徐琰; 颜树华; 周春雷; 张军

    2006-01-01

    作为生物光学发展的一个重要部分,对昆虫复眼的研究越来越重要,从结构、分类、人工仿生及应用等方面对昆虫复眼的研究近况进行了综述,并展望了其发展趋势.

  20. Improved algorithms for the classification of rough rice using a bionic electronic nose based on PCA and the Wilks distribution.

    Science.gov (United States)

    Xu, Sai; Zhou, Zhiyan; Lu, Huazhong; Luo, Xiwen; Lan, Yubin

    2014-03-19

    Principal Component Analysis (PCA) is one of the main methods used for electronic nose pattern recognition. However, poor classification performance is common in classification and recognition when using regular PCA. This paper aims to improve the classification performance of regular PCA based on the existing Wilks Λ-statistic (i.e., combined PCA with the Wilks distribution). The improved algorithms, which combine regular PCA with the Wilks Λ-statistic, were developed after analysing the functionality and defects of PCA. Verification tests were conducted using a PEN3 electronic nose. The collected samples consisted of the volatiles of six varieties of rough rice (Zhongxiang1, Xiangwan13, Yaopingxiang, WufengyouT025, Pin 36, and Youyou122), grown in same area and season. The first two principal components used as analysis vectors cannot perform the rough rice varieties classification task based on a regular PCA. Using the improved algorithms, which combine the regular PCA with the Wilks Λ-statistic, many different principal components were selected as analysis vectors. The set of data points of the Mahalanobis distance between each of the varieties of rough rice was selected to estimate the performance of the classification. The result illustrates that the rough rice varieties classification task is achieved well using the improved algorithm. A Probabilistic Neural Networks (PNN) was also established to test the effectiveness of the improved algorithms. The first two principal components (namely PC1 and PC2) and the first and fifth principal component (namely PC1 and PC5) were selected as the inputs of PNN for the classification of the six rough rice varieties. The results indicate that the classification accuracy based on the improved algorithm was improved by 6.67% compared to the results of the regular method. These results prove the effectiveness of using the Wilks Λ-statistic to improve the classification accuracy of the regular PCA approach. The results also indicate that the electronic nose provides a non-destructive and rapid classification method for rough rice.