Análisis Dinámico de Máquinas Utilizando la Distribución de Wigner-Ville

Abstract

Rotary machines with don't operate correctly initially generate transient vibratiom and/or non stotionary mode. which in different instances have different frequency content. It can be shown, that in these cases a bidimensional time-frequency tronsform is necessory to characterize these vibrations. The Wigner-Ville seudo Transform. STWV, and its implementation in MATLAB
language are discused Several different vibration types are analyzed using STWV to ilustrate their principal characteristics and its performance is comparated with the classical Fast Fourier Transform, FFT. It is concluded that the STWV is a much mort!powerful analysis tool than the
FFT; especially for transient and not stationary signals.