局部均值分解, 端点效应, 波形匹配, 自适应

The LMD is a new method for analyzing non-stationary signals. It can decompose complicated signals into a set of single-component signals,each of which has physical sense. But performing the LMD will produce end effects which make results distortion. After analyzing the reasons for these,a self-adaptive waveform matching extending method was proposed to overcome the end effects of LMD. Considering both signal’s inner discipline and the edge of the signal,therefore the extension was reasonable and possessed adaptability.The analytical results from simulated signals and actual engineering signals demonstrate that the new method can be used to solve the end effects effectively.

local mean decomposition(LMD), end effect, waveform matching, self-adaptive