事故预测分析的PETRI网

对事故预测分析Ｐｅｔｒｉ网模型中的事件、逻辑门表示及其模型构造进行了讨论；文中以一事故为例，对其ｐｅｔｒｉ网、ｐｅｔｒｉ网的可达标识图制作做了较为详细的介绍。在此基础上，分析可达标识图，求出导致事故发生的最小割集和最小径集，为控制事故的措施选择提供了可靠的理论依据。该方法表现直观，为事故的预测分析开辟了一条新的途径。

A PETRI NET OF ACCIDENT FORECAST ANAIS

The events and logical gate in petri net model for forecasting and analysing accident, and thestructure of model, are discussed in this paper. To set up the petri net are minutely introduced bya accident example. On the basis of above, reachability identification graphs are analysed and theminimum cut sets, which lead to accident, and the minimum path sets which control the accidentto take place are obtained. So that a reliable theory bases to choose the measure of controlling accident are provided.The method is a visual aid. It povides a new approach in forecast and analysis of accident.