关键词: 故障诊断, 特征提取, 小波变换, 信号处理

Abstract: Wavelet has very good time-frequency domain features, the continuous wavelet coefficients of mechanical vibration signal is studied. From the aspect of feature extracting, this paper puts forward a new statistics and proved that this kind of one-order moment is very effective. 8 kinds of fault analysis results are given in detail. Research show that this quantitative analysis method could be used for extracting features of vibration siganl.

Key words: Fault diagnosis, Feature extracting, Signal processing, Wavelet transform