小波分析在天然气传输系统压缩机故障检测中的应用

A wavelet analysis and its application in the fault diagnosis of the compressor in the natural gas transmission system

介绍了小波变换的原理及在天然气传输系统故障检测中的应用 ,利用小波包分析了其主要设备压缩机的故障。结果显示 ,同傅里叶变换和短时傅里叶变换 (STFT)相比 ,小波变换及小波包变换是更有效的压缩机故障检测方法。

This paper introduces the theory of the wavelet transform and application in the fault diagnosis of the compressor in the natural gas transmission system and analyzes the compressor mechanical faults by using algorithm of wavelet pocket.Results shows the wavelet pocket is a more efficient method in comparison with fourier transform and short fourier transform in the field of compressor fautl diagnosis.