State estimator and its application for systems with disturbances

Xinkai Chen, Toshio Fukuda, Takamasa Hori

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Based on the implicit observer techniques, a new expression of the state is obtained by the first order filters of the input, output and disturbance. For the minimum phase dynamical systems with arbitrary relative degrees (with respect to the relation between disturbance-output), the higher order filters of the disturbance is estimated by using the VSS equivalent control method. Then, by some new techniques, the lower order filter of the disturbance is estimated. Eventually, the disturbance is also estimated. Thus, the state vector is asymptotically expressed by the first order filters of the input and output and the estimate of the first order filters of the disturbance. The estimated state and the disturbance are applied to a controller to place a desired pole and to cancel the disturbance. Examples and simulation results are presented to show the effectiveness of the proposed algorithms.

Original languageEnglish
Pages199-204
Number of pages6
Publication statusPublished - 1996 Dec 1
EventProceedings of the 1996 IEEE International Workshop on Variable Structure Systems, VSS'96 - Tokyo, Jpn
Duration: 1996 Dec 51996 Dec 6

Other

OtherProceedings of the 1996 IEEE International Workshop on Variable Structure Systems, VSS'96
CityTokyo, Jpn
Period96/12/596/12/6

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Chen, X., Fukuda, T., & Hori, T. (1996). State estimator and its application for systems with disturbances. 199-204. Paper presented at Proceedings of the 1996 IEEE International Workshop on Variable Structure Systems, VSS'96, Tokyo, Jpn, .