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Exponential time-frequency distribution of mechanical vibration signals
Authors:Gangtie Zheng  P. D. McFadden
Affiliation:(1) Department of Aerospace Engineering, Harbin Institute of Technology, 150001 Harbin, China;(2) Department of Engineering Science, University of Oxford, Oxford, UK
Abstract:An improved exponential time-frequency distribution is presented. Compared with those exponential time-frequency distributions represented by the Choi-Williams distribution, this distribution is designed to suit the properties of mechanical vibration signals, and is easier to be applied in the mechanical vibration signal processing. It has a strong cross-term suppression ability and is aliasing free.
Keywords:time-frequency distribution   mechanical vibration signal   signal processing   condition monitoring.
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