| 铁路调度指挥系统故障诊断方法 |
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| 引用本文： | 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) |
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| 作者姓名： | 王兴中 王振东 王涛 张琦 |
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| 作者单位： | 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 |
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| 摘 要： | 根据铁路调度指挥系统中的故障传播路径特点,建立故障传播的有向图及其模型,设计基于贝叶斯后验概率准则的故障诊断算法.该算法的基本原理是,每1个新增的故障现象都对应着1个故障原因域,依据贝叶斯后验概率准则,计算故障原因域中每1个故障原因的疑似概率,然后按其大小顺序插入既有的故障原因疑似概率集合中.随着故障现象的增加,当故障原因疑似概率集合不再改变时,运算终止.故障原因疑似概率集合中前n个元素能覆盖故障现象时,这n个元素所对应的故障原因,即是诊断结果.实验表明,在单故障模式和双故障模式下,运用这种故障诊断算法得出的结论完全正确,并且在计算机上的运算时间不超过0.8s.
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| 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 |
Fault Diagnosis Method for Railway Dispatching Command System |
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| WANG Xingzhong,WANG Zhendong,WANG Tao,ZHANG Qi. Fault Diagnosis Method for Railway Dispatching Command System[J]. China Railway Science, 2011, 32(6) |
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| Authors: | WANG Xingzhong WANG Zhendong WANG Tao ZHANG Qi |
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| Affiliation: | WANG Xingzhong1,WANG Zhendong2,WANG Tao2,ZHANG Qi2(1.China Academy of Railway Sciences,Beijing 100081,China,2.Signalling and Communications Research Institute,China Academy of Railway Sciences,China) |
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| 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 exi... |
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| Keywords: | Railway dispatching command system Fault propagation digraph Fault diagnosis Fault reason Fault phenomena Bayesian posterior probability |
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