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2017 | OriginalPaper | Chapter

Design and Modeling of a Compact Rotary Series Elastic Actuator for an Elbow Rehabilitation Robot

Authors : Qiang Zhang, Benyan Xu, Zhao Guo, Xiaohui Xiao

Published in: Intelligent Robotics and Applications

Publisher: Springer International Publishing

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Abstract

Rehabilitation robot has direct physical interaction with human body, in which the adaptability to interaction, safety and robustness is of great significance. In this paper, a compact rotary series elastic actuator (SEA) is proposed to develop an elbow rehabilitation robot for assisting stroke victims with upper limb impairments perform activities of daily living (ADLs). The compliant SEA ensures inherent safety and improves torque control at the elbow joint of this rehabilitation robot. After modeling of the rotary stiffness and dynamics of the SEA, a PD feedback plus feedforward control architecture is introduced. A test bench has been designed to experimentally characterize the performance of the proposed compliant actuator with controller. It shows an excellent torque tracking performance at low motion frequency, which can satisfy the elbow rehabilitation training requirement. These preliminary results can be readily extended to a full upper limb exoskeleton-type rehabilitation robot actuated by SEA without much difficulty.

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Metadata
Title
Design and Modeling of a Compact Rotary Series Elastic Actuator for an Elbow Rehabilitation Robot
Authors
Qiang Zhang
Benyan Xu
Zhao Guo
Xiaohui Xiao
Copyright Year
2017
DOI
https://doi.org/10.1007/978-3-319-65298-6_5

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