Fault Diagnosis with Rotational Part Based on Wavelet Packet Algorithm
Hongchen Wang · Coal Mine Machinery · 2012
Aiming at limitations in traditional methods of fault diagnosis,method of wavelet packet analyses is applied to fault diagnosis with rotational part,the useing of resonance frequency of rotational part is effectively extracted by method of wavelet packet decomposition and reconstruction solves demerits of classical methods of Artificially determined demodulated resonance frequency.Signal proposed by wavelet packet algorithm is resampled,according to Hubert transform and principle of envelope spectrum zoom,a new zoom envelope spectrum is getted.Experimental analysis of ault diagnosis with rotational part,testing and verifying shows that theoretical method is valid and practicable.