Research on simulation model of Petri net about maintaining process with fuzzy duration

In view of the time uncertainty of maintaining activities and fuzzy mathematical rules with complexity and difference in traditional fuzzy Petri net, the simulation model is proposed based on fuzzy simulation and Coloured Petri net. On the basis of fuzzy maintaining time, logical relationship of maintaining tasks and the synthesis of maintaining duration, the problem of fuzzy duration is turned into the problem of certain duration linked membership with fuzzy simulation. The possibility of maintaining completion is also discussed in the time restriction with credibility theory. The simulation conclusion is drawn that the model can not only be used to express the maintaining process properly and clearly, but also analyzes maintaining schedule simply and practically.