Fault Diagnosis of Rolling Element Bearings based on EMD and MKD
SUI Wen-tao 1 ZHANG Dan 2 Wilson Wang 3
1. School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China;
2. School of Electrical & Electronic Engineering, Shandong University of Technology, Zibo 255049, China;
3. Dept. of Mechanical Engineering, Lakehead University , Thunder Bay, ON, Canada P7B 5E1,Canada
Abstract: Aiming to the difficulty in feature extraction of early fault for rolling element bearings, the method based on Empirical Mode Decomposition (EMD) and Maximum Kurtosis Deconvolution (MKD) was proposed to extract the feature. The vibration signal was decomposed into a group of Intrinsic Mode Functions (IMF) through EMD. According to the kurtosis of time-domain and envelope spectrum, the sensitive IMF component was selected and reconstructed into a new signal. The reconstructed signal was processed by using maximum kurtosis deconvolution to enhance the fault information. Finally, the envelope power spectrum was obtained to analyze the bearing fault characteristic frequency information. The effectiveness and advantages of the proposed method were proved through the the signals collected from test rig.
隋文涛1,张丹2, Wilson Wang3. 基于EMD和MKD的滚动轴承故障诊断方法[J]. 振动与冲击, 2015, 34(9): 55-59.
SUI Wen-tao 1 ZHANG Dan 2 Wilson Wang 3 . Fault Diagnosis of Rolling Element Bearings based on EMD and MKD. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(9): 55-59.
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