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Keywords: entropy
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Journal Articles
Journal:
Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Briefs
J. Vib. Acoust. April 2009, 131(2): 024501.
Published Online: February 13, 2009
... different discriminant measures in various applications ( 16 19 20 ). The approach used in this work is based on relative entropy that is now defined. The algorithm first chooses a time-frequency decomposition method such as wavelet packet transform or local trigonometric transform...
Journal Articles
Journal:
Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. October 2004, 126(4): 567–573.
Published Online: December 21, 2004
... defects in rolling element bearings. This approach is capable of completely extracting the characteristic frequencies related to the defect from the resonant frequency band. Based on the Shannon entropy of wavelet-based envelope spectra, a criterion to select optimal scale to monitor the condition...