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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

Vibration Signal Wigner Distribution Short Time Fourier Transform Nonstationary Signal Fast Fourier Trans 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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