Skip to main navigation Skip to search Skip to main content

An exponential smoothing extension method for restraining the end effect of local mean decomposition

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Characterized by the self-adaptive time-frequency, Local Mean Decomposition (LMD) is suitable for analyzing non-linear and non-stationary signals. With LMD method, vibration signals of roller bearings can be decomposed into a number of product functions and a residual trend. However, end effects are produced when performing the LMD method, which make the results distortion. After researching the restraining methods of end effects for Empirical Mode Decomposition (EMD) and LMD, a new exponential smoothing extension method was proposed. The basic idea of this method is that the time of extended point is symmetrical about the datum mark and the value is decided by the exponential smoothing model. By using this method, the extension waveform confirms to the trend of the original signal. The results of the simulated signals indicate that the new method can solve the end effects efficiently.

Original languageEnglish
Title of host publicationSafety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015
EditorsLuca Podofillini, Bruno Sudret, Božidar Stojadinović, Enrico Zio, Wolfgang Kröger
PublisherCRC Press/Balkema
Pages2433-2439
Number of pages7
ISBN (Print)9781138028791
DOIs
StatePublished - 2015
Event25th European Safety and Reliability Conference, ESREL 2015 - Zurich, Swaziland
Duration: 7 Sep 201510 Sep 2015

Publication series

NameSafety and Reliability of Complex Engineered Systems - Proceedings of the 25th European Safety and Reliability Conference, ESREL 2015

Conference

Conference25th European Safety and Reliability Conference, ESREL 2015
Country/TerritorySwaziland
CityZurich
Period7/09/1510/09/15

Fingerprint

Dive into the research topics of 'An exponential smoothing extension method for restraining the end effect of local mean decomposition'. Together they form a unique fingerprint.

Cite this