APPLICATION OF FULL INFORMATION WAVELET PACKET ANALYSIS TO ROTARY MACHINERY FAULT DIAGNOSIS
Feng Tian Cai · Jixie qiangdu · 2006
According to the insufficiency of traditional rotary machinery fault diagnosis with single channel signal and the difficulty of extracting weak vibration signals,based on the full information technology theory.A new method named full information wavelet packet analysis is proposed.The dual channel signal is decomposed by wavelet packet respectively to extract the weak details,then the useful wavelet packet decomposed sequences are reconstructed and fused with the corresponding sequences of the other channel by vector spectrum technology,finally the fusion data is used to diagnose.Engineering practice indicates that the technology of full information wavelet packet analysis is a new and usable method for rotary machinery fault diagnosis.