基于广义随机Petri网的轨道车辆门系统可靠性分析

摘要

The safety and reliability of the rail vehicle door system is extremely important. Generalized stochastic Petri nets were adopted to establish the reliability model of the rail vehicle door system and describe its static structure and dynamic working process. Monte-Carlo simulation was used to compute the system reliability at different working interval. Studies show that the door system reliability model based on Petri nets is clear and convenient to expand and simulate. The results can provide guidance for the system design and maintenance arrangements.%轨道车辆车门系统的安全性和可靠性极为重要.采用广义随机Petri网建立轨道车辆车门系统工作过程的可靠性模型,描述系统的静态结构及动态运行过程.对该模型进行Monte-Carlo仿真计算,计算系统在各时间段的可靠性指标.研究表明,应用Petri网建立的车门系统可靠性模型结构清晰、拓展性强、便于仿真实现,能够为车门系统设计及维保安排提供指导.