Complex electromechanical system fault diagnosis based on the Grey Petri Nets

Abstract

Fault diagnosis is the important work and research hotpots for a complex system. Because the traditional methods are not suitable to the complex system, the synthesis methods of Grey clustering theory and Petri nets are presented based on the characteristics of complex system. The model of Grey Petri Nets is put up. Fault diagnosis based Grey Petri Nets pays more attention to the datum of complex system and the method of fault diagnosis about complex system is described in detail. Example of the flight control system of the aircraft shows that the fault diagnosis method of complex system based on the Grey Petri Nets is feasible.