Processing of Non-Stationary Vibrations Using the Affine Wigner Distribution

  • Marcelo Iribarren
  • Cesar San Martin
  • Pedro Saavedra
Part of the Applied and Numerical Harmonic Analysis book series (ANHA)

Abstract

This paper deals with the processing of non-stationary signals applied to rotating-machines condition monitoring. The advantages of applying the affine Wigner distribution is explored. First a brief synthesis of this technique and other related time-frequency distributions is given to exhibit their advantages, in particular when faults to diagnose are characterized by complex changes in spectrum or by weak non-stationarities in the vibration signal. Testing on synthesized and real signals shows it as a promising tool when compared to the Wavelet transform or smoothed pseudo Wigner-Ville distribution.

Keywords

Attenuation Covariance Radar Expense Convolution 

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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Marcelo Iribarren
    • 1
  • Cesar San Martin
    • 1
  • Pedro Saavedra
    • 1
  1. 1.Dept. of Electrical EngineeringUniversity of ConcepcióConcepcióChile

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