A method for machinery condition monitoring of transient phenomena using the Pseudo Wigner-Ville Distribution
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Authors
Rossano, Graham W.
Subjects
Machinery monitoring
transient
pseudo wigner-ville distrib
transient
pseudo wigner-ville distrib
Advisors
Shin, Y.S.
Hamilton, J. F.
Date of Issue
1990-06
Date
1990-06
Publisher
Monterey, California: Naval Postgraduate School
Language
Abstract
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.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
ix, 161 p. ill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.