A method for machinery condition monitoring of transient phenomena using the Pseudo Wigner-Ville Distribution
Rossano, Graham W.
Hamilton, J. F.
Shin, Y. S.
Hamilton, J. F.
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The Pseudo Wigner Ville Distribution is a time frequency representation of an input time signal and is ideally suited for portraying non-stationary signals. A working computer program is presented and the effect of preprocessing and postprocessing data manipulations is shown. The program has been developed for analyzing data for use in machinery condition monitoring diagnostics and will be valuable asset for analyzing transient machinery. A practical example showing pump speed variations with time is also presented. Due to the fact that the Pseudo Wigner-Ville Distribution can be used to analyze both steady state and transient operations, along with the fact that it can be calculated on virtually any computer, this method could revolutionize machinery condition monitoring and diagnostics.
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