Fault tolerant supervisory for discrete event systems based on event observer

Abstract

The fault tolerant supervisory problem for discrete event systems is addressed in this paper. The proposed approach is based on the state avoidance control theory and observer-based control for Petri net. The key idea of the authors is to use a simple linear algebraic formalism to estimate system states and generate diagnostic information. Hence, the state explosion problem is avoided and the observer-based fault diagnosis algorithm can be made on-line. © Springer-Verlag Berlin Heidelberg 2005.