DIAGNOSIS OF A FAULT TOLERANT COMPOUND SYSTEM USING AN OBSERVER

Liberios Vokorokos

   This paper deals with an advanced method to diagnose a fault, presents a new method to estimate the fault location and the fault intensity. Based on an integrator model of the time behaviour of the fault, the given system is extended and a linear elementary state observer is designed which estimates the non-linear effects caused by the fault. The observer uses measurements of poll displacement. This paper presents a method based on the observer, how to estimate the non-linear effects, localisation of the fault, its intensity and to assess the harmonic force at a certain place on the control system. The intensity of the fault means also the prediction of the lifetime of the considered system.

Keywords: diagnosis, fault, observer, intensity

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