Considering identifying the faults of the rolling bearing of the injection pump unit of the offshore plat-form,this paper extracted the fault feature signals of the outer ring,inner ring and rolling element of the rolling bear-ing through harmonic wavelet packet transform and analyzed the change of fault feature signals when the vibration of the rolling bearing is too large.The results show that the harmonic wavelet packet transform can extract the weak roll-ing bearing fault feature signals from the strong noise background,and then determine the rolling bearing outer ring,inner ring and rolling element faults through the amplitude change of the extracted fault feature signals.
rolling bearingfault featureharmonic wavelet packet transformextraction
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