A systematic experimental study is presented in this paper on evaluating the effectiveness of a unified, multidomain algorithm for defect feature extraction in bearing condition monitoring and health diagnosis. The algorithm decomposes vibration signals measured on bearings by discrete wavelet transform and subsequently performs the Fourier transform on the wavelet coefficients. The effectiveness of such a unified technique is demonstrated through experimental case studies, which confirmed its advantage over the wavelet or Fourier transform techniques employed alone. Also, the unified technique has shown to be computationally more efficient than the enveloping technique based on continuous wavelet transform, thus providing a good signal processing tool for bearing defect diagnosis.
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e-mail: ruqiang@engr.uconn.edu
e-mail: rgao@engr.uconn.edu
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August 2009
Research Papers
Experimental Evaluation of a Unified Time-Scale-Frequency Technique for Bearing Defect Feature Extraction
Ruqiang Yan,
Ruqiang Yan
Mem. ASME
Department of Mechanical Engineering,
e-mail: ruqiang@engr.uconn.edu
University of Connecticut
, Storrs, CT 06269
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Robert X. Gao,
Robert X. Gao
Fellow ASME
Department of Mechanical Engineering,
e-mail: rgao@engr.uconn.edu
University of Connecticut
, Storrs, CT 06269
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Changting Wang
Changting Wang
Global Research Center,
General Electric Corporation
, Niskayuna, NY 12309
Search for other works by this author on:
Ruqiang Yan
Mem. ASME
Department of Mechanical Engineering,
University of Connecticut
, Storrs, CT 06269e-mail: ruqiang@engr.uconn.edu
Robert X. Gao
Fellow ASME
Department of Mechanical Engineering,
University of Connecticut
, Storrs, CT 06269e-mail: rgao@engr.uconn.edu
Changting Wang
Global Research Center,
General Electric Corporation
, Niskayuna, NY 12309J. Vib. Acoust. Aug 2009, 131(4): 041012 (10 pages)
Published Online: June 18, 2009
Article history
Received:
May 5, 2008
Revised:
April 7, 2009
Published:
June 18, 2009
Citation
Yan, R., Gao, R. X., and Wang, C. (June 18, 2009). "Experimental Evaluation of a Unified Time-Scale-Frequency Technique for Bearing Defect Feature Extraction." ASME. J. Vib. Acoust. August 2009; 131(4): 041012. https://doi.org/10.1115/1.3147125
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