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Improvement of the response of SMA actuator using temperature sensor

1989 Journal of the Robotics Society of Japan  
) actuator using temperature sensors Fig. 13 Responses of the angular displacement control for rectangular wave input (The room temperature is 22•Ž) (a) by the ordinary control method with ventilation  ...  gain (4095/10 V)) Fig. 5 5 Fig. 5 SCR driver circuit for SMA actuator Fig. 6 Input and output properties of the SCR driver for SMA actuator (uB is generated by DA converter with the gain (10 V/4095  ...  .: A New Actuator of a Joint Mechanism Using TiNi Alloy Wire, International Journal of Robotics Research, Vol.4, No.4, p.47-58 (1986)  ... 
doi:10.7210/jrsj.7.39 fatcat:6qak5qkekrfxle4xu7l66iyv74

Improving the response of SMA actuators

R.A. Russell, R.B. Gorbet
Proceedings of 1995 IEEE International Conference on Robotics and Automation  
This paper describes two novel developments of the basic SMA actuator which improve dynamic performance.  ...  Unfortunately their response is relatively slow, being limited by the speed with which the SMA can be heated and cooled.  ...  Acknowledgments The authors would like to gratefully acknowledge the generous financial support of David Wang, member of the ConStruct group at the University of Waterloo.  ... 
doi:10.1109/robot.1995.525604 dblp:conf/icra/RussellG95 fatcat:vhpqb2fmqbcn5dqzha3mascosa


Marco Vuorisalo, Tapio Virvalo
2002 Proceedings of the JFPS International symposium on fluid power  
memory, Pilot stage actuator  ...  These alloys can be plastically deformed with moderate forces at low temperature, and upon exposure to some higher temperature the alloys will return to its original shape prior to the KEY WORDS Shape  ...  IMPROVING THE RESPONSE OF SMA ACTUATORS Traditionally shape memory actuators have relationally slow response. Reason for slow response is not the transformation rate.  ... 
doi:10.5739/isfp.2002.149 fatcat:xun2jellgvdsjf7vu3p2bjjt6y

Efficiency Analysis of SMA-Based Actuators: Possibilities of Configuration according to' the Application

Janeth Arias Guadalupe, Dorin Copaci, David Serrano del Cerro, Luis Moreno, Dolores Blanco
2021 Actuators  
The multi-wires actuator configuration produce a better response in terms of position but are less energy efficient.  ...  In this work, we developed different configurations of SMA actuators and tested their performance in terms of efficiency and the position error in the cooling stage.  ...  The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.  ... 
doi:10.3390/act10030063 fatcat:3bqwu2yyu5cyjldgx3amrq33ku

An Architecture for Fast and Accurate Control of Shape Memory Alloy Actuators

Yee Harn Teh, Roy Featherstone
2008 The international journal of robotics research  
The closed-loop response is fast and accurate, even in the presence of large external motion disturbances. There is no sign of limit cycles; and the performance is unaffected by large load inertias.  ...  of the position encoder. 0 The final, definitive version of this paper has been  ...  Future research directions include implementing better control designs to further improve the speed of response of the SMA actuator.  ... 
doi:10.1177/0278364908090951 fatcat:hsprgeinvregdlfxg6qfpsxtie

Analysis and Evaluation of the Dynamic Performance of SMA Actuators for Prosthetic Hand Design

Kevin T. O'Toole, Mark M. McGrath, Eugene Coyle
2009 Journal of materials engineering and performance (Print)  
and evaluation of the dynamic performance of SMA actuators for prosthetic hand design.  ...  Joule-heating of the SMA bundle actuators generates sufficient torque at the fingers to allow a wide range of everyday tasks to be carried out.  ...  Forced cooling via metallic heat sinks of SMAs has been shown to significantly improve the transient response during the cooling (expansion) stage.  ... 
doi:10.1007/s11665-009-9431-9 fatcat:alhiqfok3ffojbls4qhpdlldva

Shape Memory Alloy-based High Phase Order Motor

Claudio Rossi, Zongjian Yuan, Chao Zhang, Antonio Barrientos, William Coral
2014 Proceedings of the 11th International Conference on Informatics in Control, Automation and Robotics  
The motor can be used either in stepping mode or in servo mode of operation. Each phase of the motor consists of an SMA wire with a spring. The principle of operation of the HPOM is presented.  ...  depending on which SMA is actuated, which are presented in this work.  ...  The complete setup is depicted in figure 11 . When the frequency increase the tracking error also increases but increasing the ISMA the speed response improves.  ... 
doi:10.5220/0005114805620568 dblp:conf/icinco/RossiYZBC14 fatcat:72nd436fpzfb7egnixhcbvrq34

Development of Faster SMA Actuators [chapter]

Atta Muhammad Nizamani, Jawaid Daudpoto, Muhammad Ali Nizaman
2017 Shape Memory Alloys - Fundamentals and Applications  
Development of Faster SMA Actuators Development of Faster SMA Actuators  ...  However, the grease-cooled actuators had shown less strain, and their response was non-linear at many instances.  ...  Figure 10 shows the response of oil-cooled SMA actuator when actuated for 2 seconds at different actuation currents.  ... 
doi:10.5772/intechopen.69868 fatcat:gmumzawukzfcfnpqe3xkudyura

Flexible shape memory alloy actuators for soft robotics: Modelling and control

Dorin-Sabin Copaci, Dolores Blanco, Alejandro Martin-Clemente, Luis Moreno
2020 International Journal of Advanced Robotic Systems  
Some exoskeleton prototypes have been developed, which demonstrate the utility of this actuator and the advantages offered by these flexible actuators to improve the comfort and adaptability of exoskeletons  ...  One of the limitations in the development of really soft robotic devices is the development of soft actuators.  ...  Acknowledgement The authors would like to express their special thanks to Alvaro Villoslada for the development of the BPID controller included in this article.  ... 
doi:10.1177/1729881419886747 fatcat:dl7tx6apujhv7kuhpq7tvvqpmy

Development of Miniature Stewart Platform Using TiNiCu Shape-Memory-Alloy Actuators

Alaa AbuZaiter, Ee Leen Ng, Suhail Kazi, Mohamed Sultan Mohamed Ali
2015 Advances in Materials Science and Engineering  
Each SMA actuator exerts a maximum force of 0.6 N at PWM duty cycle of 100%.  ...  The tilting direction depends on the SMA actuator that is activated, while all four SMA actuators are activated to achieve the linearz-axis movement.  ...  The measurement process of thermal response of SMA actuator is shown in Figure 11 . For this experiment, only one SMA actuator is actuated and the change of temperature was recorded every second.  ... 
doi:10.1155/2015/928139 fatcat:tc4ekx2hirhz5d3j3v4dfadgiq

SMA-Based Muscle-Like Actuation in Biologically Inspired Robots: A State of the Art Review [chapter]

William Coral, Claudio Rossi, Julian Colorado, Daniel Lemus, Antonio Barrientos
2012 Smart Actuation and Sensing Systems - Recent Advances and Future Challenges  
Improving the performance of SMA actuators One of the main limitations in SMA actuation speed is due to high latency that the the cooling time of the wire implies.  ...  improving actuation speed.  ... 
doi:10.5772/50209 fatcat:sruixz6vuzbgrdvaa56mte2lzm

Design and control of a proof-of-concept active jet engine intake using shape memory alloy actuators

Gangbing Song, Ning Ma, Luyu Li, Nick Penney, Todd Barr, Ho-Jun Lee, Steve Arnold
2011 Smart Structures and Systems  
Acknowledgments The first author would like to thank the support provided by NASA through a grant (NAG3-2827) and NSF through a CAREER grant (0093737).  ...  of an adaptive intake to improve the fuel efficiency of a jet engine.  ...  Since the heat dissipation in this experiment occurred mainly through natural convection, the response of the device during the cooling period can be improved by using forced convection.  ... 
doi:10.12989/sss.2011.7.1.001 fatcat:oybfynumjbgbpij62s5hjmcrvm

A Review of SMA-Based Actuators for Bidirectional Rotational Motion: Application to Origami Robots

Kejun Hu, Kanty Rabenorosoa, Morvan Ouisse
2021 Frontiers in Robotics and AI  
However, longitudinal motion-driven actuators are frequently investigated and commonly mentioned, whereas studies in SMA-based rotational motion actuation is still very limited in the literature.  ...  This work provides a review of different research efforts related to SMA-based actuators for bi-directional rotational motion (BRM), thus provides a survey and classification of current approaches and  ...  An SMA blade-form actuator realized by a thermoelectric system composed of two bismuth tellurides (Bi 2 Te 3 ) ingots is tested, resulting in an improvement of response dynamic during cooling.  ... 
doi:10.3389/frobt.2021.678486 fatcat:wtbcoxnlcbd3jjupyvqljl43b4

Wind Tunnel Test of Morphing Flap Driven by Shape Memory Alloy Wires

Toshiyuki KOJIMA, Tadashige IKEDA, Atsuhiko SENBA, Masato TAMAYAMA, Hitoshi ARIZONO
The actuator system is comprised of thin SMA wires and air blowers to improve the response of the SMA wires.  ...  In addition, solid actuators such as electromagnetic motors and shape memory alloys (SMAs) reduce weight and maintenance cost compared to conventional hydraulic actuators.  ...  The authors would like to thank the members of JAXA's 2m × 2m Low-speed Wind Tunnel and Optical-Measurement teams for the support provided.  ... 
doi:10.2322/tastj.15.a75 fatcat:33wb5irzorcx7ln7fg2t7rvvxu

A concise review of the applications of NiTi shape-memory alloys in composite materials

Kazeem O. Sanusi, Olukayode L. Ayodele, Mohamed T.E. Khan
2014 South African Journal of Science  
The understanding of the characteristics of NiTi SMAs such as SME and pseudoelasticity, is important in the design and implementation of NiTi-based devices.  ...  SME is based on the reversible martensitic transformation of the SMA between an austenitic phase and a martensitic phase by the application of heat or stress. 8 The forward thermoelastic transformation  ...  Acknowledgement This work was supported by the Faculty of Engineering, Cape Peninsula University of Technology, Bellville campus, Cape Town, South Africa.  ... 
doi:10.1590/sajs.2014/20130200 fatcat:op3ppg2z4ndebdxhw6dlxhjewm
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