Wavelet Transform Domain Filter and Its Application in Incipient Fault Prognosis

Fu Cai Li; Jin Chen; Gui Cai Zhang; Zheng Jia He

doi:10.4028/www.scientific.net/KEM.293-294.127

Paper Titles

Gearbox Fault Diagnosis Using Adaptive Redundant Second Generation Wavelet
p.95

Comparison of Two Software Tools for Damage Identification: Gradient-Based vs. Case-Based Approach
p.103

Identification of Impact Force for Base on Higher Order Wigner Distribution
p.111

Damage Identification of a Mechanical Structure with a Non-Minimum Phase Based on Singular Value Decomposition
p.119

Wavelet Transform Domain Filter and Its Application in Incipient Fault Prognosis
p.127

Classification Using Radial Basis Function Networks with Uncertain Weights
p.135

Comparison of Different Methods of Ritz Vectors Extraction
p.143

Considerations for Practical Neural Network Application to a Damage Detection Problem
p.151

Impact Load Identification Based on Local Measurements
p.159

HomeKey Engineering MaterialsKey Engineering Materials Vols. 293-294Wavelet Transform Domain Filter and Its...

Wavelet Transform Domain Filter and Its Application in Incipient Fault Prognosis

Abstract:

Noise is the biggest obstacle that makes the incipient fault prognosis results uncorrected. According to the theories of correlation analysis and threshold de-noising by wavelets, wavelet transform domain filter (WTDF) is constructed. WTDF is an iterative process. By selecting the process parameters adaptively, WTDF can de-noise signal efficiently. More important, the faint component in the signal will become stronger. WTDF method is used to analyze the signals collected from a bearing that has incipient unbalance and misalignment faults. Results show that WTDF is effective for bearing incipient fault prognosis.

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Key Engineering Materials (Volumes 293-294)

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127-134

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.293-294.127

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Online since:

September 2005

Authors:

Fu Cai Li, Jin Chen, Gui Cai Zhang, Zheng Jia He

Keywords:

Correlation Filtering, De-Noising, Incipient Fault Prognosis, Wavelet Transform (WT)

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