College of Field Engineering, PLA Univ. of Sci. & Tech.，Nanjing 210007 China
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History+
Received
Revised
Published
2014-01-27
2014-04-10
2015-04-25
Issue Date
2015-04-25
Abstract
In order to solve the problem of excessive false IMF components in ensemble empirical mode decomposition(EEMD), an improved EEMD method based on cut-off frequency is proposed in this paper. This method adopts a new screening termination conditions of IMF,which takes the minimum frequency of signal itself as the cut-off frequency when processed by EMD. Then the screening termination conditions of IMF based on cut-off frequency is introduced to the EEMD.Compared with EMD and EEMD, the false IMF components reduce more effectively and mode mixing phenomenon is well inhibited by EEMD based on cut-off frequency in the analysis of the simulation and measured signals. The IMF components are complete and the purpose of decomposition is more clear in EEMD based on cut-off frequency.
HUANG Jie，ZHANG Mei-jun，CHAI Kai，CHEN Hao.
The Research of EEMD based on Cut-off Frequency[J]. Journal of Vibration and Shock, 2015, 34(8): 101-105
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