Relevant bibliographies by topics / Artificial shape memory analogs

Academic literature on the topic 'Artificial shape memory analogs'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Artificial shape memory analogs"

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Zhang, Yunlan, Mirian Velay-Lizancos, David Restrepo, Nilesh D. Mankame, and Pablo D. Zavattieri. "Architected material analogs for shape memory alloys." Matter 4, no. 6 (June 2021): 1990–2012. http://dx.doi.org/10.1016/j.matt.2021.04.015.

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Izawa, Hideki, Yukio Sekiguchi, and Yasuhito Shiota. "The artificial muscle from shape memory alloy." Journal of Life Support Engineering 17, Supplement (2005): 124. http://dx.doi.org/10.5136/lifesupport.17.supplement_124.

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Takashima, Kazuto, Jonathan Rossiter, and Toshiharu Mukai. "McKibben artificial muscle using shape-memory polymer." Sensors and Actuators A: Physical 164, no. 1-2 (November 2010): 116–24. http://dx.doi.org/10.1016/j.sna.2010.09.010.

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ISHIKAWA, Toshiya, and Takeshi NAKADA. "Shape Memory Alloy Actuator for Artificial Muscle." Journal of Environment and Engineering 5, no. 1 (2010): 105–13. http://dx.doi.org/10.1299/jee.5.105.

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Chen, Yujie, Chi Chen, Hafeez Ur Rehman, Xu Zheng, Hua Li, Hezhou Liu, and Mikael S. Hedenqvist. "Shape-Memory Polymeric Artificial Muscles: Mechanisms, Applications and Challenges." Molecules 25, no. 18 (September 16, 2020): 4246. http://dx.doi.org/10.3390/molecules25184246.

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Shape-memory materials are smart materials that can remember an original shape and return to their unique state from a deformed secondary shape in the presence of an appropriate stimulus. This property allows these materials to be used as shape-memory artificial muscles, which form a subclass of artificial muscles. The shape-memory artificial muscles are fabricated from shape-memory polymers (SMPs) by twist insertion, shape fixation via Tm or Tg, or by liquid crystal elastomers (LCEs). The prepared SMP artificial muscles can be used in a wide range of applications, from biomimetic and soft robotics to actuators, because they can be operated without sophisticated linkage design and can achieve complex final shapes. Recently, significant achievements have been made in fabrication, modelling, and manipulation of SMP-based artificial muscles. This paper presents a review of the recent progress in shape-memory polymer-based artificial muscles. Here we focus on the mechanisms of SMPs, applications of SMPs as artificial muscles, and the challenges they face concerning actuation. While shape-memory behavior has been demonstrated in several stimulated environments, our focus is on thermal-, photo-, and electrical-actuated SMP artificial muscles.
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TAKAGI, Toshiyuki, Yun LUO, Shinya HARA, Tomoyuki YAMABE, Shintaro AMAE, Motoki WADA, and Hirokazu NAKAMURA. "An artificial sphincter using shape memory alloy actuators." Journal of Advanced Science 12, no. 3 (2000): 337–42. http://dx.doi.org/10.2978/jsas.12.337.

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TAKAGI, Toshiyuki, Yun LUO, Hirokazu NAKAMURA, Shintaro AMAE, Tomoyuki YAMBE, Takamichi KAMIYAMA, Motoki WADA, Shinya Hara, Jun Makino, and Kiyoshi Yamauchi. "Application of Shape Memory Alloys in Artificial Sphincters." Proceedings of the JSME annual meeting 2000.1 (2000): 55–56. http://dx.doi.org/10.1299/jsmemecjo.2000.1.0_55.

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Luo, Yun, Toshiyuki Takagi, and Kenichi Matsuzawa. "Design of an artificial sphincter using shape memory alloys." International Journal of Applied Electromagnetics and Mechanics 14, no. 1-4 (December 20, 2002): 411–16. http://dx.doi.org/10.3233/jae-2002-423.

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Miki, Hiroyuki, Takeshi Okuyama, Shingo Kodaira, Yun Luo, Toshiyuki Takagi, Tomoyuki Yambe, and Takeshi Sato. "Artificial-esophagus with peristaltic motion using shape memory alloy." International Journal of Applied Electromagnetics and Mechanics 33, no. 1-2 (October 8, 2010): 705–11. http://dx.doi.org/10.3233/jae-2010-1176.

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Cui, Yande, Dong Li, Chen Gong, and Chunyu Chang. "Bioinspired Shape Memory Hydrogel Artificial Muscles Driven by Solvents." ACS Nano 15, no. 8 (August 16, 2021): 13712–20. http://dx.doi.org/10.1021/acsnano.1c05019.

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Dissertations / Theses on the topic "Artificial shape memory analogs"

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Bambeck, Timothy J. "A computer controlled data acquisition and control system for a shape-memory alloy artificial muscle." Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1174935244.

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Narayanan, Pavanesh. "Sensor-less Control of Shape Memory Alloy Using Artificial Neural Network and Variable Structure Controller." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1416501021.

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Kianzad, Soheil. "A treatise on highly twisted artificial muscle : thermally driven shape memory alloy yarn and coiled nylon actuators." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/54782.

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A new perspective in the field of actuators was opened by the demonstration of multiwall carbon nanotube based actuators by Foroughi et al, in 2011. The approach involves applying a high degree of twist to create large torsional actuation in carbon nanotube yarns, and more recently in coiled nylon filaments. In this thesis torsional actuation is further studied in nylon, and extended to shape memory alloys (SMA). Torsional actuation is demonstrated using 25 μm diameter micro strands of shape memory alloy (SMAs) that are twisted together. These form yarns with Young’s modulus of 13.5 GPa in the Martensitic phase and 18 GPa in the Austenite state. In torsion, the SMA yarns show more than 8,000 rpm peak rotational speed with 11 reversible rotations for an 8 cm long yarn. This is observed upon applying 0.47 W/cm electrical input power. Providing more than 5 N.m/kg torque, SMA yarns may be of interest in biomedical and other applications. The mechanical behaviour of coiled nylon actuators is studied by testing elastic modulus and by investigating tensile stroke as a function of temperature. Loads that range from 35 MPa to 155 MPa were applied. For the nylon and the coiling conditions used, active thermal contraction totals 19.5 % when the temperature is raised from -40 ⁰C to 160 ⁰C, with most contraction above the glass transition temperature. Introducing various cooling methods was shown to enable increased rate of actuation up to several Hertz. Nylon coiled actuators potentially provide affordable and viable solutions for driving mechanical devices as recently demonstrated in robotic hands and arms. A new biomimetic arrangement of the nylon actuator is presented that imitates the human pennate muscle in structure, including the ability to vary stiffness by a factor of 9 and to increase isometric force from 19 N to 37 N by recruiting additional fibers.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
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Tadesse, Yonas Tegegn. "Creating Human-Like Facial Expressions Utilizing Artificial Muscles and Skin." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/30159.

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Mimicking facial structures for a robotic head requires integration of multiple structural and mechanical parameters, design, synthesis and control of muscle actuation, architecture of the linkages between actuation points within skin, and implementation of the deformation matrix with respect to global skull coordinates. In this dissertation, humanoid faces were designed and fabricated to investigate all the parameters mentioned above. A prototype face and neck was developed using servo motors and extensively characterized. In this prototype, a neck mechanism was designed using a four bar mechanism to achieve nodding and turning motions. The modular neck prototype simplifies the assembly and statically in equilibrium and hence demands less torque from the cost-effective RC servo motor. The mechanism was critically investigated for dynamic performance and it was found out that RC servo based robotic head requires a PD external controller to overcome inherent overshoot. The servo based robotic head was analyzed for design and control of anchor, architecture of linkages between actuation points within skin, and deformation matrix with respect to global coordinate for creating specific expressions. A functional relationship between deformation vector of facial control points and actuator parameter, skin elasticity and angular position of actuator was derived. The developed analysis method is applicable to any rotary actuator technology utilized for facial expressions and takes into account the skin stiffness. The artificial skin materials for facial expression were synthesized using platinum-cured silicone elastomeric material (Reynolds Advanced Materials Inc.) with base consisting of mainly polyorganosiloxanes, amorphous silica and platinum-siloxane complex compounds. Systematic incorporation of porosity in this material was found to lower the force required to deform the skin in the axial direction. The performance of the servo motor based face was quite realistic but it suffers from the drawback of large power consumption, bulky, heavy, and limited functionality. Thus, significant effort was made in developing a Biometal fiber and Flexinol shape memory alloy actuator (SMA) based biped mountable baby head facial structure which resembles the form and functionality of a human being. SMAs were embedded inside a skull and connected to elastomeric skin at control points. An engineered architecture of skull was fabricated that incorporates all the muscles with their 35 routine pulleys, two fire wire CMOS cameras that serve as eyes, and a battery powered microcontroller base driving circuit within the total dimensions of 140 mm x 90 mm x 110 mm. The driving circuit was designed such that it can be easily integrated with biped and processed in real-time. The humanoid face with 12DOF was mounted on the body of DARwIn (Dynamic Anthropomorphic Robot with Intelligence) robot which has 21 DOF resulting in a total of 33 DOF system. Characterization results on the face and associated design issues are described that provide pathways for developing human-like facial anatomy. Numerical simulation using Simulink was conducted to assess the performance of a prototypic robotic face mainly focusing on jaw movement. A graphical method “Graphical Facial Expression Analysis and Design (GFEAD)” was developed that can be used to allocate the sinking points on robotic head. The method assumes that the origin of the action units are known prior and the underlying criterion in the design of faces being deformation of a soft elastomeric skin through tension in anchoring wires attached on one end to the sinking point and on the other to the actuator. Experimental characterization on a prototyping humanoid face was performed to validate the model and demonstrate the applicability on a generic platform. During characterization of the SMA based face, it was found that the currently available artificial muscle technologies do not meet the entire requirement for being embedded in the skin and provide the required strain rate, maximum strain, blocking force, response time and energy density. Thus an effort was made to develop conducting polymer based artificial muscles which can meet the metrics of human muscle. Composite stripe and zigzag actuators consisting of a sandwich structure polypyrrole /poly(vinylidene difluoride) (PPy/PVDF) were synthesized using potentiodynamic film growth on gold electrodes. The synthesis was done from an aqueous solution containing tetrabutylammonium Perchlorate (TBAP) and pyrrole by polymerization at room temperature. For depositing thin PPy films and thereby minimizing the response time, an experimental optimization of the deposition conditions was performed. The number of current-potential (potentiodynamic) growth cycles and the thickness of the deposited PPy film were highly correlated in the initial stages of polymer film growth. Strip actuator of size 11 x 5 mm2 with 63μM exhibited a deflection of 3mm under 1V DC voltage and 2mm deflection under 8V AC voltage at 0.5 Hz. It was found that three-segment zigzag actuator of segment length 15x2.5mm and thickness 63μM amplifies the displacement by 1.5 times. A study was also conducted on the synthesis and characterization of thick and thin film polypyrrole (PPy) – metal composite actuators. The fabrication method consisted of three steps based upon the approach proposed by Ding et al.: (i) winding the conductive spiral structure around the platinum (Pt)-wire core, (ii) deposition of PPy film on the Pt-wire core, and (iii) removal of the Pt-wire core. This approach yielded good performance from the synthesized actuators, but was complex to implement due to the difficulty in implementing the third step. To overcome the problem of mechanical damage occurring during withdrawal of Pt-wire, the core was replaced with a dispensable gold coated polylactide fiber that could be dissolved at the end of deposition step. Experimental results indicate that thin film actuators perform better in terms of response time and blocking force. A unique muscle-like structure with smoothly varying cross-section was grown by combining layer by layer deposition with changes in position and orientation of the counter electrode in reference to the working electrode. Synthesis of polypyrrole–metal coil was conducted in aqueous solution containing 0.25 M Pyrrole, 0.10 M TBAP and 0.50 M KCl. The actuator consisted of a single layer of platinum winding on a core substrate. Electrochemical characterization for free strain and blocking stress was conducted 0.1 M TBAP solution and a 6% free strain was obtained at an applied potential of 6V DC after 80 s stimulation time. The blocking stress 18 kPa was estimated by extrapolating the strain magnitude on stress-strain diagram. For axial type actuator with coil winding, a generalized governing equation for the electrochemical stress generated from polypyrrole–metal coil which accommodates the effect of magnetic field due to winding was proposed and numerically studied. It was considered as insightful modeling.
Ph. D.
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Longela, Makusudi Simon. "The development of an artificial hand using nickel-titanium as actuators." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/2229.

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Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2013.
This thesis outlines a proposed mechanical design, prototyping and testing of a five fingered artificial hand made of 15 articulated joints actuated by Shape Memory Alloys (SMAs) mimicking muscular functions. SMAs Artificial muscles were incorporated in the forearm and artificial tendons made of nylon wires passing through a hollow palm transmit the pulling force to bend the fingers. Torsion springs set in each joint of the fingers create enough restoring force to straighten the finger when the actuators are disengaged. Nickel-Titanium (NiTi) wires were intrinsically embedded within the hand structure allowing significant movements mimicking human hand-like gestures. A control box made of switches connected to the artificial hand helps to control each gesture. A modular approach was taken in the design to facilitate the manufacture and assembly processes. Nickel-Titanium wires were used as actuators to perform the artificial muscle functions by changing their crystallographic structures due to Joule's heating. Rapid prototyping techniques were employed to manufacture the hand in ABS plastic.
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Mendes, Eduardo Felippe Aguiar. "Uma contribuição ao desenvolvimento de manipuladores antropomorficos com enfase na utilização de musculos artificiais." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264731.

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Orientadores: Helder Anibal Hermini, Paulo R. G. Kurka
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
Made available in DSpace on 2018-08-10T05:53:08Z (GMT). No. of bitstreams: 1 Mendes_EduardoFelippeAguiar_M.pdf: 4299696 bytes, checksum: d73355f383b74bd0e49b3bc2473e5b6b (MD5) Previous issue date: 2007
Resumo: Este trabalho visou o estudo de manipuladores à semelhança do membro superior humano. Após o estudo do membro superior humano e dos robôs antropomórficos disponíveis tanto na industria quanto no meio acadêmico, utilizaram-se teorias de modelagem geométrica, cinemática direta e cinemática inversa para realizar o modelo de um manipulador robótico antropomórfico. A partir desse modelo desenvolveu-se um software em LabVIEW de Cinemática Direta e Cinemática Inversa de operação em tempo real. Com a intenção de verificar os acionadores mais apropriados disponíveis atualmente, um estudo de músculos artificiais se seguiu, onde se observou a maior viabilidade do músculo artificial de SMA ativado eletricamente. Um protótipo de junta acionada por músculos artificiais foi desenvolvido e controlado via computador. Como resultado deste trabalho conclui-se que há ainda muito para ser desenvolvido na área de manipuladores antropomórficos, principalmente no que diz respeito aos músculos artificiais
Abstract: This work sought the study of manipulators to the similarity of the human superior member. After the study of human superior member, and of anthropomorphics robotics available in the industries and in the academic middle, it was used theories of geometric modelling, direct kinematics modelling and inverse kinematics modelling to make the model of a anthropomorphic robotic manipulator. With that model it grew a software in LabVIEW of real time Direct Kinematics and Inverse Kinematics. With the intention of verifying the available most appropriate actuators, a study of artificial muscles was proceeded, where the largest viability of the artificial muscle of SMA activated electrically was observed. A joint prototype actuated by artificial muscles was developed and controlled through computer. As a result of this work it is ended that there is still a lot to be developed in the area of anthropomorphic manipulators, mainly in what it concerns the artificial muscles
Mestrado
Mecanica dos Sólidos e Projeto Mecanico
Mestre em Engenharia Mecânica
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Abolfathi, Peter Puya. "Development of an Instrumented and Powered Exoskeleton for the Rehabilitation of the Hand." University of Sydney, 2008. http://hdl.handle.net/2123/3690.

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Doctor of Philosophy (PhD)
With improvements in actuation technology and sensory systems, it is becoming increasingly feasible to create powered exoskeletal garments that can assist with the movement of human limbs. This class of robotics referred to as human-machine interfaces will one day be used for the rehabilitation of paralysed, damaged or weak upper and lower extremities. The focus of this project was the development of an exoskeletal interface for the rehabilitation of the hands. A novel sensor was designed for use in such a device. The sensor uses simple optical mechanisms centred on a spring to measure force and position simultaneously. In addition, the sensor introduces an elastic element between the actuator and its corresponding hand joint. This will allow series elastic actuation (SEA) to improve control and safely of the system. The Hand Rehabilitation Device requires multiple actuators. To stay within volume and weight constraints, it is therefore imperative to reduce the size, mass and efficiency of each actuator without losing power. A method was devised that allows small efficient actuating subunits to work together and produce a combined collective output. This work summation method was successfully implemented with Shape Memory Alloy (SMA) based actuators. The actuation, sensory, control system and human-machine interface concepts proposed were evaluated together using a single-joint electromechanical harness. This experimental setup was used with volunteer subjects to assess the potentials of a full-hand device to be used for therapy, assessment and function of the hand. The Rehabilitation Glove aims to bring significant new benefits for improving hand function, an important aspect of human independence. Furthermore, the developments in this project may one day be used for other parts of the body helping bring human-machine interface technology into the fields of rehabilitation and therapy.
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Hosseinipour, Milad. "Design and Development of an Intra-Ventricular Assistive Device For End Stage Congestive Heart Failure Patients: Conceptual Design." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1372726495.

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Jhu, Ying-Sin, and 朱瑩馨. "Development of Kinetic Artificial Flower Ornaments Using Shape Memory Alloy." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/52735887336977154883.

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碩士
國立勤益科技大學
機械工程系
98
Artificial ornament flowers are very universal technology, most people enjoy one of the ornament, and floriculture material can be multifarious, just follow creator have different combinations, and than produce different ideas. However, artificial ornament flowers material are mainly of static state object, if the original static state flowers components dynamic state or can be coupled with some other function of the dynamic components, the appropriate combination electronic sensors and control program under the electrical and mechanical, upgrade rich creation content, increasing education, entertainment and health body and mind additional effects. Therefore, this thesis is original static state artificial ornament flowers dynamic state, modular, program control and green energy technology. Mainly flower, leave, stem, butterfly and other insect with each other, goal is to display flower bloom and bending to the light deflection, and green leave, branch swaying in the dynamic visual effect, the flower emit floral scent at the same time, produce fragrant smell feel, and the butterfly wings dancing to create pleasing picture.As flower bloom, butterfly flapping, green leaf and branch swaying have to power source and produce small movements, designed to reduce the complexity of organizations, large volume and to avoid noise generate, destroy the flowers natural beauty and convenience of use. Therefore, this thesis exclude the use of traditional motor and other transmission components, changed to linear shape memory alloy (SMA) as actuators organization component, and to a single-chip output pulse width modulation (PWM) signal with the current as the control circuit. This paper works through diversification and modular combination of flower elements, combined with sensor and programmable controls. Users may need to create variety customized product, from the development and use point of view, have highly creative life and infinite market potential. Future benefit assessment can be applied to office technology of small objects (adult toys), clothing fashion accessories, and artificial flower-shaped robot.
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"Design and construction of a SMA controlled artificial face." 2000. http://library.cuhk.edu.hk/record=b5890491.

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Thomas Kin Fong Lei.
Thesis (M.Phil.)--Chinese University of Hong Kong, 2000.
Includes bibliographical references (leaves 64-66).
Abstracts in English and Chinese.
LIST OF FIGURES --- p.IV
Chapter 1 --- Introduction --- p.1
Chapter 2 --- Model-based Control of SMA Wires --- p.3
Chapter 2.1 --- Model Identification of SMA Wires --- p.3
Chapter 2.1.1 --- Temperature-Current Relationship --- p.3
Chapter 2.1.2 --- Stress-Strain Relationship --- p.5
Chapter 2.1.3 --- Martensite Fraction-Temperature Relationship --- p.8
Chapter 2.2 --- Model-based Position Control of Two Linking SMA Wires --- p.9
Chapter 2.3 --- Summary --- p.12
Chapter 3 --- Neural-fuzzy-based Control of SMA Wires --- p.13
Chapter 3.1 --- Adaptive Neuro-fuzzy Inference System (ANFIS) --- p.13
Chapter 3.1.1 --- ANFIS Architecture --- p.13
Chapter 3.1.2 --- Hybrid Learning Algorithm --- p.16
Chapter 3.2 --- Generalized Neural Network (GNN) --- p.20
Chapter 3.2.1 --- GNN Architecture --- p.20
Chapter 3.2.2 --- Approximation of the GNN --- p.22
Chapter 3.2.3 --- Backpropagation Training Algorithm --- p.24
Chapter 3.2.4 --- Complexity Reduction of the GNN --- p.25
Chapter 3.2.5 --- Error Bound of In-exact Reduction of the GNN --- p.29
Chapter 3.3 --- Neural-fuzzy-based Position Control of Four Linking SMA Wires --- p.32
Chapter 3.3.1 --- ANFIS-based Position Control of Four Linking SMA Wires --- p.32
Chapter 3.3.2 --- GNN-based Position Control of Four Linking SMA Wires --- p.35
Chapter 3.3.3 --- Performance Comparison of ANFIS and GNN Algorithms --- p.37
Chapter 3.4 --- Summary --- p.39
Chapter 4 --- SMA Actuated Artificial Face --- p.40
Chapter 4.1 --- Muscles of the Human Face --- p.40
Chapter 4.2 --- The Software Part: facial model --- p.41
Chapter 4.3 --- The Hardware Part: artificial face and peripheral interface --- p.43
Chapter 4.3.1 --- SMA Actuated Artificial Face --- p.43
Chapter 4.3.2 --- Peripheral Interface --- p.45
Chapter 4.4 --- Position Control on the Artificial Face --- p.47
Chapter 4.4.1 --- Model-based Position Control on Artificial Face --- p.48
Chapter 4.4.2 --- Neural-fuzzy-based Position Control on Artificial Face --- p.49
Chapter 4.4.3 --- Comparison of the Model-based and Reduced GNN Control of Artificial Face --- p.49
Chapter 4.5 --- Experimental Result --- p.50
Chapter 5 --- Conclusion --- p.52
Appendix1 --- p.53
Appendix2 --- p.55
Appendix3 --- p.56
Appendix4 --- p.58
Bibliography --- p.64
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Books on the topic "Artificial shape memory analogs"

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Zbikowski, Lawrence M. Questions, Answers, Questions. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190653637.003.0007.

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This chapter provides a summary for the volume as a whole and discusses prospects for a cognitive grammar of music going forward. The first portion of the chapter reviews the main questions explored over the course of the book and the answers provided by the theoretical framework that has been set out. The second portion of the chapter sets out three ways a cognitive grammar of music might be furthered: first, through empirical research on processes of categorization, memory function, and analogies involving dynamic processes, all of which are connected with musical understanding; second, through an exploration of the relationship between the familiar constructs of music theory (like intervals, scales, and chords) and the sonic analogs for dynamic processes fundamental to musical grammar; and, third, through a continued investigation into the ways musical materials shape humans’ cultural interactions.
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Book chapters on the topic "Artificial shape memory analogs"

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Chicote, Juan C. "Shape Memory Fabrics to Improve Quality Life to People with Disability (PWD)." In Distributed Computing, Artificial Intelligence, Bioinformatics, Soft Computing, and Ambient Assisted Living, 890–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02481-8_135.

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Kim, W. C., M. Lee, J. K. Shin, and H. S. Yang. "Implementation of Visual Tracking System using Artificial Retina Chip and Shape Memory Alloy Actuator." In Neural Information Processing: Research and Development, 460–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-39935-3_25.

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Li, Yuan-Yuan, Cai-You Zeng, Shanshan Cao, Xiao Ma, and Xin-Ping Zhang. "Functional Stability of the Ni51Ti49 Two-Way Shape Memory Alloy as Artificial Anal Sphincter During Thermo-Mechanical Cycling." In Proceedings of the International Conference on Martensitic Transformations: Chicago, 201–5. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76968-4_32.

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Fan, Jizhou, and Guoqiang Li. "Two-Way Shape Memory Polymer Based Artificial Muscles." In Reference Module in Materials Science and Materials Engineering. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-12-820352-1.00227-3.

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Copaci, Dorin, Janeth Arias, Luis Moreno, and Dolores Blanco. "Shape Memory Alloy (SMA)-Based Exoskeletons for Upper Limb Rehabilitation." In Artificial Muscles [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.101751.

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This contribution presents the advances in the use of flexible Shape Memory Alloy (SMA)-based actuators for the development of upper limb rehabilitation exoskeletons that have been carried out by our research group. The actuator features developed by our research group maintain the SMA wire characteristics (low-weight, low-cost, noiseless operation, compact, and simplicity) and additionally presents the flexibility and its increase the work frequency. These characteristics make that its integration in rehabilitation exoskeletons provides the user more comfort, easy to use, and freedom of movement. The chapter describes some different rigid and soft rehabilitation exoskeletons for different joints such as the elbow, wrist, and hand in which this type of actuator has been successfully integrated. This gives the possibilities to expand the research line with the actuated soft exosuits systems, in a future development perspective.
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Zhang, Pengfei, Harper Meng, Oludayo Ajisafe, and Guoqiang Li. "Self-healing composites with embedded shape memory polymer fibers and polymeric artificial muscle wires." In Recent Advances in Smart Self-Healing Polymers and Composites, 383–432. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-12-823472-3.00003-5.

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Samal, Bijaya Bikram, Anita Jena, Shailendra Kumar Varshney, and Cheruvu Siva Kumar. "4D printing: An experimental case study on processing of shape memory polymer by FDM/FFF for nature inspired structures." In Advances in Additive Manufacturing Artificial Intelligence, Nature-Inspired, and Biomanufacturing, 361–77. Elsevier, 2023. http://dx.doi.org/10.1016/b978-0-323-91834-3.00019-3.

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Saito, Ken, Minami Kaneko, and Fumio Uchikoba. "Ant-Like Walking Behavior of MEMS Microrobot With Artificial Neural Networks IC." In Handbook of Research on Biomimetics and Biomedical Robotics, 228–45. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2993-4.ch010.

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This chapter explains how the MEMS microrobot system could perform the walking behavior of ants. MEMS microrobot system consists of micro-mechanical systems and micro-electro systems. The micro-mechanical systems mimic the alternating tripod gait of an ant by the shape memory alloy-type rotary actuator and the link mechanism. The micro-electro systems mimic the electrical activity of biological neural networks using the artificial neural networks IC. The artificial neural networks IC generates the driving pulses of shape memory alloy-type rotary actuator without using software programs. The micro-mechanical systems and micro-electro systems are integrated as a robot system. As a result, the authors show that the MEMS microrobot system could perform the ant-like walking behavior with a speed of 20 mm/min. The MEMS microrobot system was 0.079 g in weight, 4 mm width, 4 mm length, and 5 mm height in size. The robot system needs only the electrical power source as an external device.
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Cimpoeșu, Nicanor, Armand Enache, Ramona Cimpoeșu, and Marius Prelipceanu. "Respiratory dispositive with intelligent shape-memory alloy wires to help artificial ventilation during sleep for SARS-CoV patients." In Biomedical Engineering Applications for People with Disabilities and the Elderly in the COVID-19 Pandemic and Beyond, 231–39. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-323-85174-9.00027-3.

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Wagner, Delphine, Yves Remond, Yves Bolender, Pascal Laheurte, and Daniel George. "Mechanical Characterization of Orthodontic Archwires in a Pseudo In-Vivo Context." In Stem Cells and Regenerative Medicine. IOS Press, 2021. http://dx.doi.org/10.3233/bhr210012.

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Orthodontic fixed appliances are used to correct dental malocclusions by optimizing tooth movement and associated bone remodelling. Currently, orthodontic archwires made of shape memory alloys (SMAs) are widely used to initiate these treatments. We conduct experiments on SMA wires in pseudo in-vivo conditions, complementary to ISO standards, to assess the influence of temperature and humidity and to highlight their expected mechanical behaviour for clinical use. For this, an in-house built measurement device was developed to carry out experiments at controlled temperatures (21°C and 35°C) and in dry or wet conditions (artificial saliva). The dental arch was reproduced by 3D printing. The results show that the temperature has a major influence on the delivered forces whereas wet or dry conditions seem to have less impact. Also, we emphasize that at 35°C (in mouth conditions), in wet or dry conditions, SMAs superelasticity is only effective for displacements up to about 3 mm when an entire dental arch is considered.
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Conference papers on the topic "Artificial shape memory analogs"

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Henrickson, James, Kenton Kirkpatrick, and John Valasek. "Characterization of Shape Memory Alloys Using Artificial Neural Networks." In 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-129.

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Mazza, Paul, Moochul Shin, and Anthony Santamaria. "Shape Memory Alloy As Artificial Muscles for Facial Prosthesis." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71621.

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Facial paralysis affects hundreds of thousands of people each year; a common result of infection, trauma, stroke, and Bell’s palsy, among others. Achieving facial prosthetics that are lightweight, comfortable, aesthetically pleasing, energy efficient, and that allow human-like facial motion is a challenge. This study focuses on examining the feasibility of the use of a shape memory alloy as a means of low-power artificial muscles. Nitinol is a shape memory alloy (SMA) that can recover up to four percent of its original length when exposed to either a large enough change in temperature which can be controlled via electrical current or a stress. In this work, human eyelid muscles are replicated using Nitinol embedded in silicon. Silicone is used due to its elasticity, texture, flexibility, compatibility and ease of manufacturing. A mold is created based on human facial geometry around the orbital using a 3D printer. Based on average human eyelid dimensions, as well as the contraction properties of the Nitinol wire, an elliptical equation is used determine the length of wire required to completely close the eyelid from an open position. Temperature change of the system is controlled by modulating current through the resistive Nitinol wire. The contraction and expansion times of the eyelids are measured. The circuit is then optimized so that response times mimicked that of the human eyelid. Finally, based on the amount of times the average human blinks, the average daily power consumption is calculated. Future directions including miniaturization of the control system, bonding between SMA wires and silicone, and energy management are discussed.
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Takashima, Kazuto, Jonathan Rossiter, and Toshiharu Mukai. "Development of a McKibben artificial muscle using a shape-memory polymer." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Zoubeida Ounaies and Jiangyu Li. SPIE, 2010. http://dx.doi.org/10.1117/12.847229.

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Chiroiu, Veturia, Ligia Munteanu, Traian Badea, and Cornel Mihai Nicolescu. "On a Finger Model Actuated With Shape Memory Alloy Artificial Muscles." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41064.

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The simulation of a flexible finger, actuated with the shape memory alloys (SMAs) artificial muscles, is presented in the paper. The finger is modeled as a cylindrically rod with three embedded NiTi wires in a n aluminum matrix. Forces between NiTi wires causes bending in any plane perpendicular to the longitudinal axis of the finger. The NiTi wires are heated above the austenitic start temperature by passing an electrical current, and the deflected wire tends to return to the initial configuration. Using characteristics of SMAs such as high damping capacity, super-elasticity, thermo-mechanical behavior and shape memory, the actuation for the finger is theoretically introduced and discussed.
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Shiraishi, Yasuyuki, Akihiro Yamada, Genta Sahara, Tomoyuki Yambe, Kengo Kato, Jun Ohta, Yukio Katori, and Dai Homma. "Design of an Artificial Tongue Driven by Shape Memory Alloy Fibers." In 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). IEEE, 2021. http://dx.doi.org/10.1109/embc46164.2021.9630283.

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Quintanar-Guzman, Serket, Somasundar Kannan, Miguel A. Olivares-Mendez, and Holger Voos. "Lightweight robotic arm actuated by shape memory alloy (SMA) wires." In 2016 8th International Conference on Electronics, Computers and Artificial Intelligence (ECAI). IEEE, 2016. http://dx.doi.org/10.1109/ecai.2016.7861065.

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SHIRAISHI, YASUYUKI, TOMOYUKI YAMBE, and DAI HOMMA. "ACHIEVEMENT OF MECHANICAL ASSISTANCE BY AN ARTIFICIAL MYOCARDIUM USING SHAPE MEMORY ALLOY FIBRE." In Proceedings of the Tohoku University Global Centre of Excellence Programme. PUBLISHED BY IMPERIAL COLLEGE PRESS AND DISTRIBUTED BY WORLD SCIENTIFIC PUBLISHING CO., 2009. http://dx.doi.org/10.1142/9781848163539_0048.

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Pfeiffer, Charles, Constantinos Mavroidis, Kathryn DeLaurentis, and Mike Mosley. "Shape Memory Alloy Actuated Robot Protheses: Initial Prototypes." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0419.

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Abstract This paper describes the goals and current accomplishments of this research. The main thrust of this effort is to design artificial limbs that are lightweight, compact and dexterous, that mimic human anatomy and maintain a high lifting capability. The key to satisfying these objectives is the use of Shape Memory Alloy (SMA) artificial muscles as actuators. A general methodology to find the placement of SMA wires to achieve desired ranges of motion is presented. Three experimental prototypes, emulating human skeletal structures that are actuated by SMA artificial muscles are described in detail. It is expected that upper extremity amputees will greatly benefit from the commercialization of the novel robot prosthetic devices that will be developed in this research. These lightweight prostheses with high lifting capabilities, force-reflective characteristics and multi-degree of freedom dexterity will tremendously improve the capabilities of amputees and therefore will attract their interest. In addition, our SMA actuated robotic devices can find other commercial applications. Of special interest to our team are two other commercial applications: space robotic systems and robot toys.
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Shiraishi, Yasuyuki, Akihiro Yamada, Tomoyuki Yambe, Dai Homma, Shintaro Katahira, Naoki Masaki, Yukihiro Hayatsu, Masatoshi Akiyama, and Yoshikatsu Saiki. "Contraction support for the right ventricle by a shape memory alloy fibered artificial myocardium." In 2015 10th Asian Control Conference (ASCC). IEEE, 2015. http://dx.doi.org/10.1109/ascc.2015.7244735.

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Shiraishi, Y., T. Yambe, Y. Saijo, F. Sato, A. Tanaka, M. Yoshizawa, T. K. Sugai, et al. "Sensorless control for a sophisticated artificial myocardial contraction by using shape memory alloy fibre." In 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2008. http://dx.doi.org/10.1109/iembs.2008.4649251.

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Reports on the topic "Artificial shape memory analogs"

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Engel, Bernard, Yael Edan, James Simon, Hanoch Pasternak, and Shimon Edelman. Neural Networks for Quality Sorting of Agricultural Produce. United States Department of Agriculture, July 1996. http://dx.doi.org/10.32747/1996.7613033.bard.

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The objectives of this project were to develop procedures and models, based on neural networks, for quality sorting of agricultural produce. Two research teams, one in Purdue University and the other in Israel, coordinated their research efforts on different aspects of each objective utilizing both melons and tomatoes as case studies. At Purdue: An expert system was developed to measure variances in human grading. Data were acquired from eight sensors: vision, two firmness sensors (destructive and nondestructive), chlorophyll from fluorescence, color sensor, electronic sniffer for odor detection, refractometer and a scale (mass). Data were analyzed and provided input for five classification models. Chlorophyll from fluorescence was found to give the best estimation for ripeness stage while the combination of machine vision and firmness from impact performed best for quality sorting. A new algorithm was developed to estimate and minimize training size for supervised classification. A new criteria was established to choose a training set such that a recurrent auto-associative memory neural network is stabilized. Moreover, this method provides for rapid and accurate updating of the classifier over growing seasons, production environments and cultivars. Different classification approaches (parametric and non-parametric) for grading were examined. Statistical methods were found to be as accurate as neural networks in grading. Classification models by voting did not enhance the classification significantly. A hybrid model that incorporated heuristic rules and either a numerical classifier or neural network was found to be superior in classification accuracy with half the required processing of solely the numerical classifier or neural network. In Israel: A multi-sensing approach utilizing non-destructive sensors was developed. Shape, color, stem identification, surface defects and bruises were measured using a color image processing system. Flavor parameters (sugar, acidity, volatiles) and ripeness were measured using a near-infrared system and an electronic sniffer. Mechanical properties were measured using three sensors: drop impact, resonance frequency and cyclic deformation. Classification algorithms for quality sorting of fruit based on multi-sensory data were developed and implemented. The algorithms included a dynamic artificial neural network, a back propagation neural network and multiple linear regression. Results indicated that classification based on multiple sensors may be applied in real-time sorting and can improve overall classification. Advanced image processing algorithms were developed for shape determination, bruise and stem identification and general color and color homogeneity. An unsupervised method was developed to extract necessary vision features. The primary advantage of the algorithms developed is their ability to learn to determine the visual quality of almost any fruit or vegetable with no need for specific modification and no a-priori knowledge. Moreover, since there is no assumption as to the type of blemish to be characterized, the algorithm is capable of distinguishing between stems and bruises. This enables sorting of fruit without knowing the fruits' orientation. A new algorithm for on-line clustering of data was developed. The algorithm's adaptability is designed to overcome some of the difficulties encountered when incrementally clustering sparse data and preserves information even with memory constraints. Large quantities of data (many images) of high dimensionality (due to multiple sensors) and new information arriving incrementally (a function of the temporal dynamics of any natural process) can now be processed. Furhermore, since the learning is done on-line, it can be implemented in real-time. The methodology developed was tested to determine external quality of tomatoes based on visual information. An improved model for color sorting which is stable and does not require recalibration for each season was developed for color determination. Excellent classification results were obtained for both color and firmness classification. Results indicted that maturity classification can be obtained using a drop-impact and a vision sensor in order to predict the storability and marketing of harvested fruits. In conclusion: We have been able to define quantitatively the critical parameters in the quality sorting and grading of both fresh market cantaloupes and tomatoes. We have been able to accomplish this using nondestructive measurements and in a manner consistent with expert human grading and in accordance with market acceptance. This research constructed and used large databases of both commodities, for comparative evaluation and optimization of expert system, statistical and/or neural network models. The models developed in this research were successfully tested, and should be applicable to a wide range of other fruits and vegetables. These findings are valuable for the development of on-line grading and sorting of agricultural produce through the incorporation of multiple measurement inputs that rapidly define quality in an automated manner, and in a manner consistent with the human graders and inspectors.
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