Design and Modeling for Hybrid Driven Knee Orthosis with SMA actuator

2021 ◽  
Author(s):  
Zhi Sun ◽  
Bin Zi ◽  
Yuan Li
Keyword(s):  
Sma Actuator ◽  
Knee Orthosis

Design of SMA Actuator Based Access Device for Transanal Endoscopic Microsurgery

2010 ◽  
Vol 2 (2) ◽  
pp. 42-48 ◽  
Author(s):  
Hongyan Luo ◽  
Eric Abel ◽  
Alan Slade ◽  
Zhigang Wang ◽  
Robert Steele
Keyword(s):  
Transanal Endoscopic Microsurgery ◽  
Access Device ◽  
Sma Actuator ◽  
Endoscopic Microsurgery

scholarly journals Bio-inspired Miniature Suction Cups Actuated by Shape Memory Alloy

10.5772/7228 ◽  
2009 ◽  
Vol 6 (3) ◽  
pp. 29 ◽  
Author(s):  
Hu Bing-Shan ◽  
Wang Li-Wen ◽  
Fu Zhuang ◽  
Zhao Yan-zheng
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Analytical Model ◽  
Basic Structure ◽  
Thin Elastic Plate ◽  
Climbing Robots ◽  
Suction Cup ◽  
Sma Actuator ◽  
Suction Cups ◽  
Pressure Suction

Wall climbing robots using negative pressure suction always employ air pumps which have great noise and large volume. Two prototypes of bio-inspired miniature suction cup actuated by shape memory alloy (SMA) are designed based on studying characteristics of biologic suction apparatuses, and the suction cups in this paper can be used as adhesion mechanisms for miniature wall climbing robots without air pumps. The first prototype with a two-way shape memory effect (TWSME) extension TiNi spring imitates the piston structure of the stalked sucker; the second one actuated by a one way SMA actuator with a bias has a basic structure of stiff margin, guiding element, leader and elastic element. Analytical model of the second prototype is founded considering the constitutive model of the SMA actuator, the deflection of the thin elastic plate under compound load and the thermo-dynamic model of the sealed air cavity. Experiments are done to test their suction characteristics, and the analytical model of the second prototype is simulated on Matlab/simulink platform and validated by experiments.

Feasibility of an optimal EMG-driven adaptive impedance control applied to an active knee orthosis

2019 ◽  
Vol 112 ◽  
pp. 98-108 ◽  
Author(s):  
Guido G. Peña ◽  
Leonardo J. Consoni ◽  
Wilian M. dos Santos ◽  
Adriano A.G. Siqueira
Keyword(s):  
Impedance Control ◽  
Adaptive Impedance Control ◽  
Knee Orthosis
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