An improved high gain observer for single-output uniformly observable systems

Krishna K. Busawon, J. De Leon-Morales

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we present an improvement of the classical high gain observer given in Gauthier et al (1992) for single-output uniformly observable systems. The improvement lies basically in the fact that the proposed observer incorporates the information of the nonlinearity of the system in the design strategy. Consequently, unlike the classical observer, the gain of the improved observer is function of the state estimate. A comparison between the proposed observer and the classical high gain one is made via a simulation example dealing with a flexible joint mechanism. It is shown that the improved observer is more robust with regards to measurement noise and present less transients oscillations. An extension of the design is also presented for a more general class of nonlinear systems.

Original languageEnglish
Title of host publicationEuropean Control Conference, ECC 1999 - Conference Proceedings
PublisherIEEE
Pages991-996
Number of pages6
ISBN (Electronic)9783952417355
DOIs
Publication statusPublished - 24 Mar 2015
Event1999 European Control Conference, ECC 1999 - Karlsruhe, Germany
Duration: 31 Aug 19993 Sept 1999

Publication series

NameEuropean Control Conference, ECC 1999 - Conference Proceedings

Conference

Conference1999 European Control Conference, ECC 1999
Country/TerritoryGermany
CityKarlsruhe
Period31/08/993/09/99

Keywords

  • high gain
  • Uniformly observable systems

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