流体机械

2014, v.42;No.505(07) 43-46

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基于EMD信息熵和支持向量机的往复压缩机轴承故障诊断
Fault Diagnosis for Reciprocating Compressor Bearings based on EMD-information Entropy and SVM

王金东;代梅;夏法锋;赵海峰;
WANG Jin-dong;DAI Mei;XIA Fa-feng;ZHAO Hai-feng;Northeast Petroleum University;

摘要(Abstract):

往复压缩机工况恶劣、结构复杂、易损件多等特点,增加了压缩机故障诊断难度。将EMD信息熵和支持向量机(SVM)技术相结合,应用于压缩机轴承故障诊断。通过EMD对压缩机轴承信号进行分解,计算其信息熵值,并提取出能反映轴承工作状态的信息熵,将其作为特征向量训练SVM网络。结果表明,EMD信息熵和支持向量机相结合的方法,可以准确识别压缩机轴承故障。
The bad work conditions,complicated structure and more easy-wearied parts,etc.,which add to the difficulties of fault diagnosis for reciprocating compressor. A compound fault diagnosis technique based on EMD-Information Entropy and Support Vector Machine( SVM) are applied to fault diagnosis of reciprocating compressor bearings. The signals of reciprocating compressor bearings were divided by the method of Empirical Mode Decomposition. The Information Entropy was calculated and the characteristics which represent the compressor working condition were extracted. The Information Entropy can be as a vector to train Support Vector Machine Network. The results show that the method of combining EMD-Information Entropy and Support Vector Machine can accurately identify failure of compressor bearings.

关键词(KeyWords): 经验模态分解;信息熵;支持向量机;往复压缩机;故障诊断
EMD;information entropy;SVM;reciprocating compressor;fault diagnosis

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基金项目(Foundation): 黑龙江省教育厅科学技术研究项目(12521051)

作者(Author): 王金东;代梅;夏法锋;赵海峰;
WANG Jin-dong;DAI Mei;XIA Fa-feng;ZHAO Hai-feng;Northeast Petroleum University;

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