On improving the performance in robust controllers for robot manipulators with parametric disturbances
Robot manipulator
DOI:
10.1016/j.conengprac.2006.10.003
Publication Date:
2006-11-28T15:32:22Z
AUTHORS (4)
ABSTRACT
This paper presents a new strategy for controlling rigid-robot manipulators in the presence of parametric uncertainties or un-modelled dynamics. The strategy combines an adaptation law with a well known robust controller proposed by Spong, which is derived using Lyapunov's direct method. Although the tracking problem of manipulators has been successfully solved with different strategies, there are some conditions under which their efficiency is limited. Specifically, their performance decreases when unknown loading masses or model disturbances are introduced. The aim of this work is to show that the proposed strategy performs better than existing algorithms, as verified with real-time experimental results with a Puma-560 robot. (c) 2006 Elsevier Ltd. All rights reserved.
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