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定义一种应用于铁路列车运行系统的模糊时间Petri网;针对列车运行时间存在的不确定性,该Petri网引入了4个模糊集理论函数:模糊时间片、模糊使能时间、模糊发生时间和模糊延迟,来处理时间的不确定性问题;能够对列车运行过程中的时间不确定性问题进行定量分析,可以有效应用于列车交会、列车终到时间、列车运行计划调整的分析等;其相对于已有的方法具有精确分析、计算简单、简化系统、便于系统集成的特点。
Define a fuzzy time Petri net which is applied to the railway train operation system. According to the uncertainty of train running time, the Petri net introduces four fuzzy set theory functions: fuzzy time slice, fuzzy enable time, fuzzy occurrence time and Fuzzy delay, to deal with the uncertainty of time; to time-based uncertainty in the process of running the train quantitative analysis can be effectively applied to the train rendezvous, the train terminal time, the train operation plan adjustment analysis; the relative The existing method has the advantages of accurate analysis, simple calculation, simplified system and convenient system integration.