Safe Diagnosis of Pattern Failure of Decentralized Fuzzy Discrete Event Systems

This paper investigates the problem of pattern failure safe diagnosis of decentralized fuzzy discrete event systems, and proposes a pattern failure safe diagnosis method based on pattern failure safe codiagnoser. Specifically, we first introduce the concepts of pattern failure and safe diagnosis of pattern failure in fuzzy discrete event systems, and then formalize the notion of safe codiagnosibility of pattern failure for fuzzy discrete event systems. Moreover, to verify the pattern failure safe codiagnosibility of decentralized fuzzy systems, we construct the pattern failure safe codiagnoser is constructed, and developa necessary and sufficient condition for the safe codiagnosibility of pattern failure. By doing these, the pattern failure safe diagnosis of decentralized fuzzy discrete event systems can be performed based on the pattern failure safe codiagnoser.