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Volume 10: Mechanical Systems and Control, Parts A and B

DOI: 10.1115/imece2009-12553

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Robust Impedance Control of a Teleoperation System With Friction Compensation Under Time Delay

Proceedings article published in 2009 by S. M. Rezaei, Amir Monemian Esfahani ORCID, M. Zareinejad
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Data provided by SHERPA/RoMEO

Abstract

Friction forces in the robot joints insert nonlinearity in the dynamic and make errors in tracking. In this paper a new impedance control for the master is proposed to achieve force tracking. In addition, an impedance control for slave combined with sliding mode, which is based on perturbation estimation, is anticipated to reach position tracking. Friction compensators typically include a friction observer that provides a cancellation term in order to be added to the control input. Estimating and compensating the friction and other uncertainties will change the nonlinear equation to a linear one. The stability of entire system under time delay is guaranteed by Llewellyn’s absolute stability criterion. Performance of the proposed controllers is investigated through experiments.