ICE Fault Diagnosis Method Based on Mutual Information and WVD Time-Frequency Analysis

Xin Jun Wang; Yan Ping Cai; Xu Ze Lin

doi:10.4028/www.scientific.net/AMM.525.741

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 525ICE Fault Diagnosis Method Based on Mutual...

ICE Fault Diagnosis Method Based on Mutual Information and WVD Time-Frequency Analysis

Abstract:

A new time-frequency analysis method based on mutual information and EMD-WVD time-frequency analysis is proposed. The method uses EMD to decompose signals into independent intrinsic mode functions (IMF), uses the mutual information of EMD intrinsic mode components and original signal as basis to determine EMD false modal component, and uses WVD of EMD true Intrinsic Mode to reconstruct the WVD of original signal for feature information extraction. ICE fault signal time-frequency analysis results show that the proposed method can effectively improve the accuracy of WVD time-frequency analysis, and correctly analyze characteristics of the signal.

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Periodical:

Applied Mechanics and Materials (Volume 525)

Pages:

741-745

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.525.741

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Online since:

February 2014

Authors:

Xin Jun Wang*, Yan Ping Cai, Xu Ze Lin

Keywords:

Empirical Mode Decomposition (EMD), Feature Extraction, Mutual Information (MI), WVD

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* - Corresponding Author

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