对车门系统可靠性分析，提出了FTA定性分析和模糊推理Petri网定量分析相结合的方法。首先，在分析了车门系统的故障模式及故障事件的因果关系的基础上，建立了车门系统故障树模型；其次，通过FTA-FRPN的图形转化规则得到Petri网模型，最后，将模糊推理Petri网的推理算法应用于车门系统的可靠性分析，计算得到目标事件的故障率和初始事件的重要度及排序。结果验证了基于FTA和FRPN的可靠性分析方法的有效性，计算结果有助于技术人员和维修人员分析车门系统的运营状况。%In order to carry out door system reliability analysis, a methodology involving qualitative modeling using FTA and quantita-tive analysis using FRPN method is proposed in this paper. The fault tree model of the door system is established on the basis of an-alyzing the door system and cause. and-effect relationship of events, the FRPN model is converted from a fault tree model to through graphical transformation rules;and then, the reasoning algorithm is used in door system reliability analysis, and the failure rate of target event and the importance and sorting of initial events are calculated. The results are helpful to the technical personnel and ma-intenance personnel for analyzing the systems’ behavior.
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