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Physical Human-Robot Interaction of a Robotic Exoskeleton By Admittance Control

Zhijun Li, Bo Huang, Zhifeng Ye, Mingdi Deng, Chenguang Yang

IEEE Transactions on Industrial Electronics, Pages: 1 - 1

Swansea University Author: Chenguang Yang

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DOI (Published version): 10.1109/TIE.2018.2821649

Abstract

In this paper, physical human-robot interaction (pHRI) approach is presented for the developed robotic exoskeleton using admittance control to deal with human subject's intention as well as the unknown inertia masses and moments in the robotic dynamics. Human subject's intention is represe...

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Published in: IEEE Transactions on Industrial Electronics
ISSN: 0278-0046 1557-9948
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa39381
Abstract: In this paper, physical human-robot interaction (pHRI) approach is presented for the developed robotic exoskeleton using admittance control to deal with human subject's intention as well as the unknown inertia masses and moments in the robotic dynamics. Human subject's intention is represented by the reference trajectory when the robotic exoskeleton is complying with the external interaction force. Online estimation of the stiffness is employed to deal with the variable impedance property of the robotic exoskeleton. Admittance control is firstly presented based on the measured force in order to generate a reference trajectory in interaction tasks. Then adaptive control is proposed to deal with the uncertain robotic dynamics and a stability criterion can be obtained. Bounded errors are shown in the motion tracking while the robustness of the variable stiffness control is guaranteed. The experimental results indicate that the proposed control enables the human subjects to execute an admittance control task on the exoskeleton robot effectively.
College: Faculty of Science and Engineering
Start Page: 1
End Page: 1

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