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。
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.