Study on Methods for Improving LMD End Effect

Abstract:

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 peforming the LMD will produce end effects which make results distortion. After analyzing the reasons for these, the ariticle takes adcantage of three normal methods to overcome the end effects of LMD. Experimental results of three models showed that the method of self-adaptive waveform matching was better than other methods.

• Periodical: Applied Mechanics and Materials (Volume 851)
• Pages: 559-566
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.851.559
• Online since: August 2016
• Authors: Feng Wei Wang, Yun Qi Zhou, Shi Jian Zhou*
• Keywords: End Effect, Local Mean Decomposition (LMD), Mirror Extension, Self-Adaptive, Symmertrial Ertrema Ertension, Waveform Matching

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