Approach to application in the gear fault diagnosis based on the LMD and multi-scale morphology
HOU Gao-yan,Lv Yong, XIAO Han, HAO Zhi-qiang
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Wuhan University of Science and Technology; Wuhan 430081
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History+
Received
Revised
Published
2013-06-13
2013-10-16
2014-10-15
Issue Date
2015-05-22
Abstract
Mathematical morphology is a kind analysis method of nonlinear and non-stationary, it has a strong ability to restrain pulse interference, but has no ability to filter the white noise. Aim at this shortage, an multi-scale morphology method based on local mean decomposition(LMD) is proposed. the fault signal of multi-component frequency modulation and amplitude modulation is decomposed into a series of single component (PF), thus can implement signal de-noising processing and also can obtain the total amplitude modulation information of original signal. Select the high energy PFs and sum them, then reconstitute them, finally use multi-scale morphological difference filter to extract the fault characteristic frequency. It can show the validity of this method through simulation and gear fault simulation.
HOU Gao-yan;Lv Yong;XIAO Han;HAO Zhi-qiang.
Approach to application in the gear fault diagnosis based on the LMD and multi-scale morphology [J]. Journal of Vibration and Shock, 2014, 33(19): 69-73
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