基于Petri网建模与FTA的动车组受电弓故障诊断  

Fault diagnosis of pantograph type current collector of CRH2 electric multiple units based on Petri net modeling and fault tree analysis

作　　者：宋龙龙[1] 王太勇[1,2] 宋晓文[3] 徐磊[3] 宋德刚[3] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044 [2]天津大学机械工程学院,天津300192 [3]南车青岛四方机车车辆股份有限公司技术中心,青岛266111

出　　处：《仪器仪表学报》2014年第9期1990-1997,共8页Chinese Journal of Scientific Instrument

基　　金：北京交通大学优秀博士研究生创新研究基金(2014YJS113)资助项目

摘　　要：通过对CRH2型动车组受电弓结构组成、工作原理和故障模式进行分析,梳理复杂故障事件间关系,建立受电弓故障树。针对大型故障树分析中的组合爆炸和无法动态诊断的不足,将Petri网建模理论与故障树分析相结合,采用关联矩阵法求解受电弓故障树最小割集,建立其Petri网模型状态方程,通过初始状态token赋值和转移使能建立受电弓故障动态传播过程的数学表达,提高了复杂系统故障诊断推理速度和效率。最后结合受电弓故障诊断实例的应用,证明了所提算法的合理性和有效性。Based on the analysis of the structure,working principle and failure mode of the pantograph type current collector of CRH2 EMU train,the fault tree of the pantograph is established.Aiming at the deficiencies of the traditional fault tree analysis （FTA） of complex system,the Petri net modeling theory is combined with FTA to solve the problems of data explosion and dynamic diagnosis difficulty.Relational matrix analysis is used to solve the minimal cut set equation of the fault tree.The state equation of Petri net model is established.Based on the established state equation,the initial token and enable-transfer algorithm are used to establish the mathematical formula for the fault dynamic transfer process of the pantograph.Thus,the fault diagnosis inference speed and efficiency are improved.Finally,the application of the fault diagnosis example of the pantograph proves the rationality and effectiveness of the proposed method.

关 键 词：故障诊断 动车组 受电弓 故障树 最小割集 PETRI网建模 

分 类 号：TH17[机械工程—机械制造及自动化] U279.323[机械工程—车辆工程]