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Safe Human Robot-Interaction using Switched Model Reference Admittance Control

2022-11-27 07:07:29
Chayan Kumar Paul, Bhabani Shankar Dey, Udayan Banerjee, Indra Narayan Kar

Abstract

Physical Human-Robot Interaction (pHRI) task involves tight coupling between safety constraints and compliance with human intentions. In this paper, a novel switched model reference admittance controller is developed to maintain compliance with the external force while upholding safety constraints in the workspace for an n-link manipulator involved in pHRI. A switched reference model is designed for the admittance controller to generate the reference trajectory within the safe workspace. The stability analysis of the switched reference model is carried out by an appropriate selection of the Common Quadratic Lyapunov Function (CQLF) so that asymptotic convergence of the trajectory tracking error is ensured. The efficacy of the proposed controller is validated in simulation on a two-link robot manipulator.

Abstract (translated)

URL

https://arxiv.org/abs/2211.14748

PDF

https://arxiv.org/pdf/2211.14748.pdf


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