Application of Harmonic Wavelet Package to Feature Extraction in Impulsive Signal

In order to extract impulsive feature of fault signal, a novel approach was proposed by using harmonic wavelet package. With this method, the signal could be decomposed into any frequency band, and then the interested frequency band could be extracted and reconstructed in time domain, so the impulsive feature could be extracted from rubbing fault signal. Simulation and practical example show the good characteristics of this method. It also has simple algorithm and easy on-site application.