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Polynomial-Based Robust Adaptive Impedance Control of Electrically Driven Robots

Published online by Cambridge University Press:  04 November 2020

Alireza Izadbakhsh*
Affiliation:
Department of Electrical Engineering, Garmsar branch, Islamic Azad University, Garmsar, Iran
Saeed Khorashadizadeh
Affiliation:
Faculty of Electrical and Computer Engineering, University of Birjand, Birjand, Iran
*
*Corresponding author. E-mail: izadbakhsh_alireza@hotmail.com
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This paper presents a robust adaptive impedance controller for electrically driven robots using polynomials of degree N as a universal approximator. According to the universal approximation theorem, polynomials of degree N can approximate uncertainties including un-modeled dynamics and external disturbances. This fact is completely discussed and proved in this paper. The polynomial coefficients are estimated based on the adaptive law calculated in the stability analysis. A performance evaluation has been carried out to verify satisfactory performance of the controller. Simulation results on a two degree of freedom manipulator have been presented to guarantee its successful implementation.

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Type
Article
Copyright
© The Author(s), 2020. Published by Cambridge University Press