| 基于贝叶斯网络的电控发动机故障诊断研究 |
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| 引用本文： | 张长坤.基于贝叶斯网络的电控发动机故障诊断研究[J].常熟理工学院学报,2009,23(8):104-107. |
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| 作者姓名： | 张长坤 |
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| 作者单位： | 德州学院汽车工程系,山东,德州,253011 |
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| 摘 要： | 分析了贝叶斯网络的拓扑结构，给出了发动机怠速不良的故障树图．然后根据故障树到贝叶斯网络的转化算法，建立了贝叶斯网络模型．借助故障模拟试验数据确定了发动机怠速不良时电控汽油喷射系统贝叶斯网络故障诊断中各节点的先验概率值，然后通过贝叶斯网络找出了发动机怠速不良时电控汽油喷射系统各部件的故障发生概率．
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| 关 键 词： | 贝叶斯网络 发动机 怠速不良 故障诊断 |
A Study of the Fault Diagnosis of Electronic Control Engine Based on Bayesian Networks |
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| ZHANG Zhang-kun.A Study of the Fault Diagnosis of Electronic Control Engine Based on Bayesian Networks[J].Journal of Changshu Institute of Technology,2009,23(8):104-107. |
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| Authors: | ZHANG Zhang-kun |
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| Institution: | ZHANG Zhang-kun(Automobile Engineering Department, Dezhou College, Dezhou 253011, China) |
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| Abstract: | The paper analyses the characteristics of Bayesian networks and gives the fault tree of the engine idling bad. According to the translation algorithm of the fault tree translation into Bayesian networks, the mode] of Bayes- ian networks is established. According to the fault simulation tests, the prior probabilities of the nodes needed by Bayesian networks fault diagnosis are obtained. Finally the paper gives the fault probability of the electronically controlled fuel injection system components when the engine is idling bad. |
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| Keywords: | bayesian networks engine idling bad fault diagnosis |
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