Nonlinear disturbance observer for two link robotic manipulators

Wen Hua Chen, Donald J. Ballance, Peter J. Gawthrop, Jeremy J. Gribble, John O'Reilly

Research output: Journal article publicationConference articleAcademic researchpeer-review

37 Citations (Scopus)

Abstract

A new nonlinear disturbance observer for two link robotic manipulators is derived in this paper. The global exponential stability of the proposed disturbance observer is guaranteed by selecting design parameters which depend on the maximum velocity and the physical parameters of robotic manipulators. This new observer overcomes the disadvantages of existing disturbance observers which are designed or analysed by linear system techniques. It can be applied in robotic manipulators for various purposes such as friction compensation, independent joint control, torque sensorless control and fault diagnosis. The performance of the proposed observer is demonstrated by the friction estimation and compensation.

Original languageEnglish
Pages (from-to)3410-3415
Number of pages6
JournalProceedings of the IEEE Conference on Decision and Control
Volume4
Publication statusPublished - 1999
EventThe 38th IEEE Conference on Decision and Control (CDC) - Phoenix, AZ, USA
Duration: 7 Dec 199910 Dec 1999

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Modelling and Simulation
  • Control and Optimization

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