Actuator fault detection and isolation in linear systems

Phatak, Makarand S. ; Viswanadham, N. (1988) Actuator fault detection and isolation in linear systems International Journal of Systems Science, 19 (12). pp. 2593-2603. ISSN 0020-7721

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A scheme for the detection and isolation of actuator faults in linear systems is proposed. A bank of unknown input observers is constructed to generate residual signals which will deviate in characteristic ways in the presence of actuator faults. Residual signals are unaffected by the unknown inputs acting on the system and this decreases the false alarm and miss probabilities. The results are illustrated through a simulation study of actuator fault detection and isolation in a pilot plant doubleeffect evaporator.

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