中国铁道科学2011，Vol.32Issue(6)：119-124,6.
铁路调度指挥系统故障诊断方法
Fault Diagnosis Method for Railway Dispatching Command System
王兴中 1王振东 2王涛 2张琦2
作者信息
- 1. 中国铁道科学研究院,北京100081
- 2. 中国铁道科学研究院通信信号研究所,北京100081
- 折叠
摘要
Abstract
According to the characteristics of fault propagation path in railway dispatching command system, the fault propagation digraph and its model were established. The fault diagnosis algorithm based on Bayesian posterior probability rule was designed. The basic principle of this algorithm is that, every new fault phenomenon corresponds to a fault reason domain. The suspected probability of each fault reason in this domain is calculated based on Bayesian posterior probability rule. Then they are inserted into the existing suspected probability set of fault reason according to their size. As the increasing of fault phenomena, the suspected probability set of fault reason is invariant, the analysis operation terminates. In the suspected probability set of fault reason, when the former n elements which can cover the fault phenomena, their corresponding fault reasons are the diagnosis results. Experiments show that, the conclusion obtained by this fault diagnosis algorithm is completely correct in single fault mode and double fault mode, and the computer operation time is less than 0. 8 s.关键词
铁路调度指挥系统/故障传播有向图/故障诊断/故障原因/故障现象/贝叶斯后验概率Key words
Railway dispatching command system/Fault propagation digraph/Fault diagnosis/Fault reason/Fault phenomena/Bayesian posterior probability分类
交通工程引用本文复制引用
王兴中,王振东,王涛,张琦..铁路调度指挥系统故障诊断方法[J].中国铁道科学,2011,32(6):119-124,6.
