Fault detection and isolation in nonlinear systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

This paper deals with fault detection and identifcation in dynamic systems when the system dynamics can be modeled by smooth nonlinear diferential equations including afne, bilinear or linear parameter varying (LPV) systems. Two basic approaches will be considered, these apply diferential algebraic and diferential geometric tools. In the diferential algebraic approach the state elimination methods will be used to derive nonlinear parity relations. In the specifc case when a reconstruction of the fault signal is needed the dynamic inversion based approach will be investigated. This approach will also be studied from geometric point of view. The geometric approach, as proposed by Isidori and De Persis, is suitable to extend the detection flter and unknown input observer design approaches (well elaborated for LTI systems) to afne nonlinear systems. Beyond the development of the theory of fault detection and identifcation it is equally important to ofer computable methods and to analyze the robustness properties against uncertainties. Both the observer based and the inversion based approaches will be elaborated for LPV systems that may ofer computational tools inherited from linear systems and also allows to design for robustness utilizing results from H robust fltering and disturbance attenuation.

Original languageEnglish
Title of host publicationSAFEPROCESS'09 - 7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, Proceedings
Pages1-11
Number of pages11
DOIs
Publication statusPublished - Dec 1 2009
Event7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, SAFEPROCESS'09 - Barcelona, Spain
Duration: Jun 30 2009Jul 3 2009

Publication series

NameIFAC Proceedings Volumes (IFAC-PapersOnline)
ISSN (Print)1474-6670

Other

Other7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, SAFEPROCESS'09
CountrySpain
CityBarcelona
Period6/30/097/3/09

ASJC Scopus subject areas

  • Control and Systems Engineering

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  • Cite this

    Bokor, J. (2009). Fault detection and isolation in nonlinear systems. In SAFEPROCESS'09 - 7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, Proceedings (pp. 1-11). (IFAC Proceedings Volumes (IFAC-PapersOnline)). https://doi.org/10.3182/20090630-4-ES-2003.0404