An Improved HHT Method and its Application in Fault Diagnosis of Roller Bearing

Ling Li Jiang; Bo Bo Li; Xue Jun Li

doi:10.4028/www.scientific.net/AMM.273.264

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 273An Improved HHT Method and its Application in...

An Improved HHT Method and its Application in Fault Diagnosis of Roller Bearing

Abstract:

Hilbert-Huang transform (HHT) is a very effective time-frequency analysis method, but it has some disadvantages. For example, the dense modal signal cannot be decomposed completely, and redundancy intrinsic mode functions (IMFs) are easy emerging at low frequency, which will cause the distortion of the processing results. In view of the above questions, this study applies the wavelet packet transform for denoising before HHT for improving the dense modal problem, and applies the correlation coefficient method to eliminate the redundancy IMF. The fault diagnostic case of roller bearing shows the effectiveness of the proposed method.

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Periodical:

Applied Mechanics and Materials (Volume 273)

Pages:

264-268

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.273.264

Citation:

Cite this paper

Online since:

January 2013

Authors:

Ling Li Jiang, Bo Bo Li, Xue Jun Li

Keywords:

Correlation Coefficient, Fault Diagnosis, HHT, Roller Bearing

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