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Disturbance observer based control for nonlinear systems

delete2004-12-01
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Wen‐Hua Chen
DOI:10.1109/TMECH.2004.839034delete
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Abstract

Abstract

En 中文
This paper presents a general framework for nonlinear systems subject to disturbances using disturbance observer based control (DOBC) techniques. A two-stage design procedure to improve disturbance attenuation ability of current linear/nonlinear controllers is proposed where the disturbance observer design is separated from the controller design. To facilitate this concept, a nonlinear disturbance observer is developed for disturbances generated by an exogenous system, and global exponential stability is established under certain condition. Furthermore, semiglobal stability condition of the composite controller consisting of a nonlinear controller and the nonlinear disturbance observer is established. The developed method is illustrated by the application to control of a two-link robotic manipulator.
Keywords:
composite controllers
control system design
disturbance attenuation
disturbance observers
nonlinear systems
stability

Journal

I
IEEE-ASME Transactions on Mechatronics
IF:
7.3
Papers:
5.5K
Citations:
2.4W

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Cited Papers

Cited Papers

A nonlinear disturbance observer for robotic manipulators
err2000-01-01
err1.5K
errOAAI
errChen, WH; Ballance, DJ; Gawthrop, PJ; O'Reilly, J
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Placing Wireless Chargers with Limited Mobility
err2020-07-01
err0
PREAI
errHaipeng Dai; Chaofeng Wu; Xiaoyu Wang; Wanchun Dou; Yunhuai Liu
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