小波分析及其在压缩机气阀故障检测中的应用研究

Wavelet Analysis and Its Application to Valve Fault Detection of Reciprocating Compressor

从信号分析角度引入小波分析的基本原理，通过典型信号的小波分解、重构和小波尺度图展示小波分析应用在故障检测中的优点，最后将小波分析用于压缩机气阀故障检测中，进行气阀正常、进排气阀泄漏三种状态识别。

Firstly,the principle of wavelet analysis from signal analysis is introduced in this paper.Then its advantages in fault detection are shown by wavelet decomposition,wavelet reconstruction and wavelet scale figure on typical signal.Finally,applying in valve diagnosis of reciprocation compressor,wavelet analysis is demonstrated to be effective in recognition of three different states of valve sets:normal valve,leakage of input valve and output valve.