基于Petri net的故障诊断理论研究

Fault diagnosis theory based on Petri net

首先将故障概率的概念引入基于Petri net的故障诊断方法中,针对Place和Transition,提出了P概率和T概率的概念;然后给出了它们的定义和计算定理;最后,在P概率和T概率的基础上,对故障树分析(FTA)中"重要度"的概念略加调整,并将其引入所提出的故障诊断方法中,为Place和Transition定义了"重要度",同时给出了计算方法.

According to the introduction of the concept of fault possibility into the fault diagnosis theory based on Petri net, the concept of P possibility and T possibility is proposed. A definition and practicable calculation theorem are given. Based on the P/T possibility, the concept of importance of FTA is introduced into the fault diagnosis theory, and a definition is given as well as the method for its calculation.