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多尺度Hilbert谱熵在故障诊断中的应用
Application of Multi-scale Hilbert Spectrum Entropy in Reciprocating Compressor Fault Diagnosis
【摘要】 基于局域波分析的时频多分辨特性,提出了多尺度Hilbert谱熵的概念,并给出了多尺度Hilbert谱熵的计算方法。将其应用到往复式压缩机的故障诊断中,比较了时频熵与多尺度Hilbert熵在实际应用中的效果,证实了多尺度Hilbert谱熵能更准确地反映机组的状态。
【Abstract】 The conception of multi-scale Hilbert spectrum entropy(MSHSE)was proposed based on the multi scale analysis character of the local wave method(LWM)and its calculation method was developed.MSHSE was applied to the fault diagnosis of reciprocating compressor valves.By comparing with time-frequency entropy,MSHSE is proved to be more accurate in revealing the machine status.
【关键词】 故障诊断;
Hilbert谱;
信息熵;
多尺度Hilbert谱熵;
【Key words】 Fault diagnosis; Hilbert spectrum; Information entropy; Multi-scale Hilbert spectrum entropy;
【Key words】 Fault diagnosis; Hilbert spectrum; Information entropy; Multi-scale Hilbert spectrum entropy;
【基金】 国家自然科学基金资助项目(项目编号:50475155)
- 【文献出处】 农业机械学报 ,Transactions of the Chinese Society for Agricultural Machinery , 编辑部邮箱 ,2007年03期
- 【分类号】TP18
- 【被引频次】13
- 【下载频次】346