Active Fault-Tolerant Control for a Class of Nonlinear Systems with Sensor Faults

Youqing WANG*, Donghua ZHOU*, S. Joe QIN*, Hong WANG*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

87 Citations (Scopus)

Abstract

A general active fault-tolerant control framework is proposed for nonlinear systems with sensor faults. According to their identifiability, all sensor faults are divided into two classes: identifiable faults and non-identifiable faults. In the healthy case, the control objective is such that all outputs converge to their given set-points. A fault detection and isolation module is firstly built, which can produce an alarm when there is a fault in the system and also tell us which sensor has a fault. If the fault is identifiable, the control objective remains the same as in the healthy case; while if the fault is non-identifiable, the control objective degenerates to be such that only the healthy outputs converge to the set-points. A numerical example is given to illustrate the effectiveness and feasibility of the proposed method and encouraging results have been obtained.
Original languageEnglish
Pages (from-to)339-350
Number of pages12
JournalInternational Journal of Control, Automation and Systems
Volume6
Issue number3
Publication statusPublished - Jun 2008
Externally publishedYes

Keywords

  • Active fault-tolerant control
  • Identifiable fault
  • Non-identifiable fault
  • Nonlinear system
  • Sensor fault

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