Abstract：A resonant demodulation method based on correlated kurtosis was proposed and applied to the separation of rolling bearing compound fault features.Firstly, a right shifting filter window was defined on the frequency axis, the correlation kurtosis of each filtered signal was calculated; Secondly, the correlated kurtosis curves of multiple faults were formed by setting different fault shift periods.Finally, according to the maximum value in the target correlated kurtosis curve of the selected, several resonance bands were determined to demodulate the original signal.It solves the problem that the resonance frequency band caused by different faults may not be identified by using spectral kurtosis because the kurtosis value of a certain frequency band is too large.The accuracy of resonance band selection was verified by simulation of multiple resonance band bearing compound faults with different energy, the measured signal analysis of compound fault of inner and outer rings of bearings under different loads shows that this method can effectively realize the separation of bearing compound fault features.
胡爱军，赵军，孙尚飞，黄申申. 基于相关峭度共振解调的滚动轴承复合故障特征分离方法[J]. 振动与冲击, 2019, 38(8): 110-116.
HU Aijun，ZHAO Jun，SUN Shangfei，HUANG Shenshen. A compound fault feature separation method of rolling bearing based on correlation kurtosis resonance demodulation. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(8): 110-116.
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