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A sufficient condition for the stability of the Third-order Extended State Observer

  • Harbin Institute of Technology

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

Abstract

In this paper, the stability of the Third-order Extended State Observer (ESO) as an important component of the Active Disturbance Rejection Controller (ADRC) is investigated. First, the Lyapunov function with particular form is constructed, and the sufficient condition for the asymptotic stability of the Third-order ESO is derived, based on the symmetry and the positive definiteness of Lyapunov function matrix, the nature of the nonlinear function and the related theory. This condition only includes the parameters of the observer, so it can be easily used as both stability criterion and design of ESO. Compared with the existing results, this stability condition proposed in this paper is more general since it can be considered as an extension of the existing second-order ESO stability results. At last, the effectiveness of the condition is verified by a simulation example.

Original languageEnglish
Title of host publicationProceedings of the 32nd Chinese Control Conference, CCC 2013
PublisherIEEE Computer Society
Pages1526-1531
Number of pages6
ISBN (Print)9789881563835
StatePublished - 18 Oct 2013
Event32nd Chinese Control Conference, CCC 2013 - Xi'an, China
Duration: 26 Jul 201328 Jul 2013

Publication series

NameChinese Control Conference, CCC
ISSN (Print)1934-1768
ISSN (Electronic)2161-2927

Conference

Conference32nd Chinese Control Conference, CCC 2013
Country/TerritoryChina
CityXi'an
Period26/07/1328/07/13

Keywords

  • ADRC
  • ESO
  • Lyapunov function
  • Stability

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