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Actuator fault detection and estimation for a class of nonlinear systems

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

Abstract

In this paper, a novel actuator fault detection and estimation scheme based on adaptive observer is investigated for a class of nonlinear systems. In this study, actuator faults are modeled by radial basis function (RBF) neural network. The adaptive fault estimation observer is designed by exploiting the online learning ability of radial basis function neural network to approximate the actuator fault. The weight updating algorithm of the RBF network is established in the sense of Lyapunov theory. In addition, design of the proposed observer is reformulated to a set of linear matrix inequalities, which can be easily solved by numerical tools. Finally, the presented fault detection and estimation scheme is applied to a satellite attitude control system. Simulation results demonstrate the effectiveness of the proposed fault diagnosis approach.

Original languageEnglish
Title of host publicationProceedings - 2011 7th International Conference on Natural Computation, ICNC 2011
Pages535-539
Number of pages5
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 7th International Conference on Natural Computation, ICNC 2011 - Shanghai, China
Duration: 26 Jul 201128 Jul 2011

Publication series

NameProceedings - 2011 7th International Conference on Natural Computation, ICNC 2011
Volume1

Conference

Conference2011 7th International Conference on Natural Computation, ICNC 2011
Country/TerritoryChina
CityShanghai
Period26/07/1128/07/11

Keywords

  • RBF neural network
  • actuator fault
  • adaptive observer
  • fault detection and estimation
  • satellite attitude control system

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