Application of Choi—Williams Reduced Interference Time Frequency Distribution to Machinery Diagnostics | Zendy

Howard A. Gaberson | Zendy

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Application of Choi—Williams Reduced Interference Time Frequency Distribution to Machinery Diagnostics

Author(s) -

Howard A. Gaberson

Publication year - 1995

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/1995/721969

Subject(s) - classification of discontinuities , vibration , interference (communication) , time–frequency analysis , amplitude , fourier transform , signal (programming language) , acoustics , frequency modulation , engineering , mathematics , computer science , physics , mathematical analysis , telecommunications , optics , bandwidth (computing) , channel (broadcasting) , radar , programming language

This article discusses time frequency analysis of machinery diagnostic vibration signals. The short time Fourier transform, the Wigner, and the Choi–Williams distributions are explained and illustrated with test cases. Examples of Choi—Williams analyses of machinery vibration signals are presented. The analyses detect discontinuities in the signals and their timing, amplitude and frequency modulation, and the presence of different components in a vibration signal.

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