基于故障树的轨道交通车载电源可靠性分析

Realiability Analysis of Urban rail transit vehicle power supply Based on Fault TreeLI Heng1, CHAI XiaoDong1, XU JiKang1,WANG Wei2,LU Xin Yuan3

摘要:

文章介绍了城市轨道交通车载电源的组成、功能和故障树分析法的理论基础。在分析车载电源功能的基础上,针对车载电源可靠性研究的不全面,提出运用故障树分析方法对车载电源的可靠性进行分析和研究。通过建立电源失效故障树,对导致电源失效的故障进行了定性以及定量分析,定性分析找出了导致城市轨道交通车载电源失效的所有故障组合; 定量分析找出了容易导致车载电源失效的故障类型,根据定性定量分析得到的结果,为城市轨道交通车载电源的可靠度计算方法提供了新的思路,并提出了有效提车载信号电源可靠性的相应建议,为车载电源的维修以及检测提供科学依据。

Abstract:

This paper mainly discusses the theoretical foundation for composition, function and fault tree analysis of urban rail transit vehicleSpower supply. On the basis of analyzing the function of vehicle power supply, aiming at the incompleteness of vehicle power supply, the fault tree analysis that use for analyzing and researching the reliability of vehicle power supply is proposed. Through building power fail fault tree, the fault that cause power fail is analyzed qualitatively and quantitatively. All fault combination that lead to urban rail transit vehicle power supply fail are found by qualitative analysis, while fail types that easy cause vehicle power supply fail found by quantitative analysis. Combining the results get from qualitative and quantitative analysis, this paper opens a new SapproachSto calculate urban rail transit vehicle power supply reliably, and puts forward corresponding suggestions to effectively improve reliable vehicle signal power supply, further to provide scientific basis for maintenance and detection of vehicle power supply.