| 基于小波包时域重构的汽车发动机燃烧状态分析 |
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| 引用本文： | 杨文平,陈国定,石博强,侯容涛.基于小波包时域重构的汽车发动机燃烧状态分析[J].机械科学与技术(西安),2002,21(2):261-262,278. |
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| 作者姓名： | 杨文平 陈国定 石博强 侯容涛 |
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| 作者单位： | [1]西北工业大学，西安710072 [2]北京科技大学，北京100083 |
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| 基金项目： | 国家自然科学基金 (5 960 5 0 0 2 )，唐山市科研基金 |
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| 摘 要： | 针对康明斯发动机的不同状态 ,利用小波包对发动机缸盖的振动信号进行了分析 ,通过改进的小波包信号重构方法在时域内分析了发动机气缸的燃烧状态 ,提出了发动机故障诊断的时域方法。研究结果表明 :利用小波包分解与重构技术在时域内便能直观地识别气缸的燃烧状态 ,该方法为复杂机械的故障诊断提供了新思路
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| 关 键 词： | 小波包 汽车发动机 燃烧状态 故障诊断 |
| 文章编号： | 1003-8728(2002)02-0261-02 |
Wavelet Packet Re-construction in Time Domain and Its Application to the Burning State Analysis of an Auto-Engine |
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| YANG Wen ping ,CHEN Guo ding ,SHI Bo qiang ,HOU Rong tao.Wavelet Packet Re-construction in Time Domain and Its Application to the Burning State Analysis of an Auto-Engine[J].Mechanical Science and Technology,2002,21(2):261-262,278. |
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| Authors: | YANG Wen ping CHEN Guo ding SHI Bo qiang HOU Rong tao |
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| Affiliation: | YANG Wen ping 1,3,CHEN Guo ding 1,SHI Bo qiang 2,HOU Rong tao 3 |
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| Abstract: | The wavelet packet theory and its function for signal de noising is studied, and the wavelet packet re construction method for improving the resolving power in time domain is given. The cylinder cover vibration signal, and the burning state in different state of the COMINS engine is analyzed by using the improved signal re construction technique of the wavelet packet theory in time domain, and the time domain fault diagnosis is proposed for engine cylinder. The experiment results show that the wavelet packet theory can be used to directly identify its different burning state of the engine in time domain, and provide a credibile new idea for complex machine fault diagnosis. |
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| Keywords: | Wavelet packet Automobile engine Burning state Fault diagnosis |
| 本文献已被 CNKI 维普 等数据库收录！ |
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