| 基于时频奇异谱和RVM的柴油机故障诊断研究 |
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| 引用本文： | 吴定海,张培林,张英堂,李兵. 基于时频奇异谱和RVM的柴油机故障诊断研究[J]. 机械强度, 2011, 33(3): 317-323 |
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| 作者姓名： | 吴定海 张培林 张英堂 李兵 |
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| 作者单位： | 军械工程学院一系,石家庄,050003 |
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| 基金项目： | 国家自然科学基金，河北省自然科学基金(E20007001048)资助项目.吴定海;1981年10月生;福建省南靖县人;汉族.博士研究生;研究方向为机械监测与信号处理 |
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| 摘 要： | 提出一种基于双树复小波包时频奇异谱和关联向量机的柴油机故障诊断方法,针对连续小波时频分布计算量大,分析速度慢,运用双数复小波包分解提取柴油机缸盖振动信号中的时频分布特征,并进行奇异值分解,结合柴油机运行的时域特点,通过特征优选,形成组合特征集,输入关联向量机多类分类器,从而实现柴油机的故障诊断.试验结果表明,该方法分析...
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| 关 键 词： | 双树复小波包 关联向量机 时频奇异谱 故障诊断 |
STUDY ON DIESEL ENGINE FAULTS DIAGNOSIS BASED ON TIMEFREQUENCY SINGULAR VALUE SPECTRUM AND RVM |
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| WU DingHai,ZHANG PeiLin,ZHANG YingTang,LI Bing. STUDY ON DIESEL ENGINE FAULTS DIAGNOSIS BASED ON TIMEFREQUENCY SINGULAR VALUE SPECTRUM AND RVM[J]. Journal of Mechanical Strength, 2011, 33(3): 317-323 |
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| Authors: | WU DingHai ZHANG PeiLin ZHANG YingTang LI Bing |
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| Affiliation: | WU DingHai ZHANG PeiLin ZHANG YingTang LI Bing(1st Department,Ordnance Engineering College,Shijiazhuang 050003,China) |
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| Abstract: | A faults diagnosis method of diesel engine based on timefrequency distribution singular value spectrum and RVM(relevance vector machine) was proposed.In order to gain computation efficiency,the discrete DT-CWPT(dual-tree complex wavelet packet transform) transform method was used to abstract the time-frequency distribution of the diesel engine cylinder head vibration signals,and the feature was extracted by singular value decomposition based on the time domain characteristics of engine,and then the features... |
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| Keywords: | Dual-tree complex wavelet packet transform Relevance vector machine Time-frequency singular value spectrum Fault diagnosis |
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