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提出了一种可用于城市轨道交通系统(UMT)可靠性分析的Petri网模型(hierarchical object-oriented petri net,HOPN).该模型将UMT分为多个对象类,各对象类的Petri网采用库所替换方法逐层嵌套细化,拼装后组成UMT可靠性分析模型.
A hierarchical object-oriented petri net (HOPN) which can be used in the reliability analysis of urban rail transit system (UMT) is proposed.The UMT is divided into several object classes, and the Petri nets of each object class adopt a library The replaced method is nested and refined, and assembled to form UMT reliability analysis model.