An architecture for fault tolerant controllers

Hans Henrik Niemann, Jakob Stoustrup

    Research output: Contribution to journalJournal articleResearchpeer-review


    A general architecture for fault tolerant control is proposed. The architecture is based on the (primary) YJBK parameterization of all stabilizing compensators and uses the dual YJBK parameterization to quantify the performance of the fault tolerant system. The approach suggested can be applied for additive faults, parametric faults, and for system structural changes. The modeling for each of these fault classes is described. The method allows to design for passive as well as for active fault handling. Also, the related design method can be fitted either to guarantee stability or to achieve graceful degradation in the sense of guaranteed degraded performance. A number of fault diagnosis problems, fault tolerant control problems, and feedback control with fault rejection problems are formulated/considered, mainly from a fault modeling point of view. The method is illustrated on a servo example including an additive fault and a parametric fault.
    Original languageEnglish
    JournalInternational Journal of Control
    Issue number14
    Pages (from-to)1091-1110
    Publication statusPublished - 20 Sept 2005


    • Fault tolerant control
    • feedback control
    • control theory
    • dynamic systems
    • fault diagnosis


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