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Fault diagnosis with disturbance rejection performance based on disturbance observer

  • Songyin Cao
  • , Lei Guo*
  • *Corresponding author for this work
  • Southeast University, Nanjing

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

Abstract

In this paper, a new fault diagnosis approach is presented for a class of non-linear systems with external disturbances. The unknown disturbances are supposed to be generated by an exogenous system, where some classical assumptions on disturbances can be removed. It is shown that it will be difficult to diagnose the fault if disturbances and faults exist simultaneously in the system. To overcome this obstacle, a new composite observer is constructed by combining a fault diagnosis observer with a disturbance observer, with which the fault can be estimated and the disturbances can be rejected at the same time. Finally, simulation is given to show the efficiency of the proposed approach.

Original languageEnglish
Title of host publicationProceedings of the 48th IEEE Conference on Decision and Control held jointly with 2009 28th Chinese Control Conference, CDC/CCC 2009
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6947-6951
Number of pages5
ISBN (Print)9781424438716
DOIs
StatePublished - 2009
Event48th IEEE Conference on Decision and Control, CDC 2009, held Jointly with the 28th Chinese Control Conference, CCC 2009 - Shanghai, China
Duration: 15 Dec 200918 Dec 2009

Publication series

NameProceedings of the IEEE Conference on Decision and Control
ISSN (Print)0743-1546
ISSN (Electronic)2576-2370

Conference

Conference48th IEEE Conference on Decision and Control, CDC 2009, held Jointly with the 28th Chinese Control Conference, CCC 2009
Country/TerritoryChina
CityShanghai
Period15/12/0918/12/09

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