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Multi-steps diagnosis of discrete event systems with Petri net models
Courtesy of Inderscience Publishers
The aim of diagnosis is to detect and isolate faults according to the observable traces generated by the system. This article concerns multi-steps diagnosis of discrete event systems modelled with ordinary Petri nets. The main contribution is to decide which sets of places must be considered for r-steps diagnosis of some fault transitions or groups of fault transitions. Conditions and algorithms are proposed that lead to sensor selection in order to design diagnosers in a systematic way without expanding the reachability graph of the Petri net models.
Keywords: fault diagnosis, discrete event systems, DES, Petri nets, sensor selection, modelling
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