The Research of System Reliability Calculation Method Based on the Improved Petri Net

System reliability analysis becomes one hot topic of research in recent years. This paper takes advantage of the characteristics of high speed bullet train fault, on the basis of the weighted fuzzy production rule and fuzzy petri net, and puts forward a weighted fuzzy petri net model. It is used for diagnostic knowledge representation and reasoning. This model can effectively deal with the issues of the complicated relationship between the fault of imprecise information and the signs. The analysis technology of petri nets Described in discrete event dynamic systems is applied to the high-speed train reliability analysis. It provides a new method to resolve the problem of system reliability.