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Design, analysis and modelling of a hybrid controller for serial robotic manipulators

Published online by Cambridge University Press:  15 August 2016

Dan Zhang*
Affiliation:
Department of Mechanical, Engineering, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada
Bin Wei
Affiliation:
Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada. E-mail: Bin.Wei@uoit.ca
*
*Corresponding author. E-mail: dzhang99@yorku.ca

Summary

When the end-effector of a robotic arm grasps different payload masses, the output of joint motion will vary. By using a model reference adaptive control approach, the payload variation effect can be solved. This paper describes the design for a hybrid controller for serial robotic manipulators by combining a PID controller and a model reference adaptive controller (MRAC) in order to further improve the accuracy and joint convergence speed performance. The convergence performance of the PID controller, the MRAC and the PID+MRAC hybrid controller for 1-DOF, 2-DOF and subsequently 3-DOF manipulators is compared. The comparison results show that the convergence speed and its performance for the MRAC and the PID+ MRAC controllers is better than that of the PID controller, and the convergence performance for the hybrid control is better than that of the MRAC control.

Type
Articles
Copyright
Copyright © Cambridge University Press 2016 

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