The Research and Application on Wavelet Energy Eigenvalues of a Faulty Generator Set

I studied the fault feature of the generator set and the characteristics of wavelet packet theory for signal de-noising, and give a method of "energy-fault". The vibration signal of the generator set in different states is analyzed by using the signal re-construction technique of the wavelet packet theory. The time domain method is given for the generator set fault diagnosis. The analysis shows, the "energy-fault" diagnosis which is based on wavelet theory is dependable and applied in the vibration fault diagnose of the generator set, and is a good assistant of fault diagnostic. The experiment results show that the wavelet packet theory can be used to directly identify the state of the generator set, and provide a credible new idea for complex machinery fault diagnosis.