A new nonlinear robust disturbance observer

Xinkai Chen, Toshio Fukuda, K. David Young

研究成果: Article査読

56 被引用数 (Scopus)

抄録

This paper presents a new nonlinear robust disturbance observer by using only the input-output information for minimum phase dynamical systems with arbitrarily relative degrees. The model uncertainties, the nonlinear parts of the system are merged into the disturbance term, and are regarded as a part of the disturbance. The disturbance is assumed bounded. However, the upper and lower bounds are assumed unknown. The new disturbance observer is inspired by the VSS control theory, whereas the upper and lower bounds of the disturbance are adaptively updated. The estimation error of the disturbance can be made as small as necessary by choosing the design parameters. The attraction of the proposed method lies in its robustness to disturbance and easiness to be implemented. Example and simulation results show the effectiveness of the proposed algorithm.

本文言語English
ページ(範囲)189-199
ページ数11
ジャーナルSystems and Control Letters
41
3
DOI
出版ステータスPublished - 2000 10月 26
外部発表はい

ASJC Scopus subject areas

  • 制御およびシステム工学
  • コンピュータ サイエンス(全般)
  • 機械工学
  • 電子工学および電気工学

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