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| Matlab在发动机故障诊断中的应用研究 |
| The Application of Wavelet Analysis Method in the Electronic Controlled Engine Fault Diagnosis |
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| DOI：10.3969/j.issn.1671-5322.2008.02.003 |
| 中文关键词: 汽车工程 电控发动机 转速传感器 小波分析 故障诊断 |
| 英文关键词: automotive engineering electronic controlled engine velocity sensor wavelet analysis method fault diagnosis |
| 基金项目: |
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| 摘要点击次数: 3464 |
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| 中文摘要: |
| 以电控汽油机转速传感器为例.探讨了小波分析技术在发动机故障诊断中的应用.首先采集了转速传感器正常和异常信号,并对采集到的信号进行小波分析,结果表明,利用小波系数可以分析转速信号,判断发动机断缸故障;转速信号的小波分析结果能对比发动机各缸的工作性能.实践证明利用小波分析对电控发动机进行故障诊断是切实可行的. |
| 英文摘要: |
| In this paper,the velocity sensor was used as an example to discuss the feasibility whether the wavelet analysis method can be applied to fault diagnosis of the electronic controlled engine or not.The normal and abnormal signal of velocity sensor were collected and analyzed by the wavelet analysis method.The results indicate that we can use wavelet transform coefficient to analyze speed signal and decide which cylinder is off.The results of the wavelet analysis method used in velocity signal can compare the capability from one cylinder to another.It proves that using the wavelet analysis method to diagnose fault of the electronic controlled engine is feasible. |
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