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.
侯高雁;吕勇;肖涵;郝志强. 基于LMD的多尺度形态学在齿轮故障诊断中的应用[J]. , 2014, 33(19): 69-73.
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 . , 2014, 33(19): 69-73.
2014, Vol. 33 
