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THE USE OF THE HILBERT TRANSFORM FOR THE DIAGNOSIS OF VIBRATIONS

OCTOBER 2007   -  Volume: 82 -  Pages: 382-386

DOI:

[No data]

Authors:

CARLOS J. GAVILAN MORENO

Disciplines:

  • Industrial technology (INGENIERIA DE MANTENIMIENTO )

Downloads:   586

How to cite this paper:  
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Received Date :   18 July 2007


Key words:
Transformada, Fourier, Hilbert, frecuencia, instantánea, espectrograma , HILBERT TRANSFORM.
Article type:
ARTICULO DE INVESTIGACION / RESEARCH ARTICLE
Section:
VARIOUS

RESUMEN
Este trabajo es una actualización de la Transformada de Hilbert, su comparación con la Transformada de Fourier y una visión de las capacidades
de esta desconocida herramienta de tratamiento de señales, no sólo de vibraciones. Con esta herramienta aparece el concepto de frecuencia instantánea como consecuencia de la suposición de una serie temporal no lineal y no estacionaria, es decir, de una serie en la que la frecuencia no es constante en el tiempo ni la de las componentes en las que se fragmenta. Se exponen también los principios de uso de la Transformada de Hilbert y el método de descomposición que la hace aplicable desde el punto de vista informático. Finalmente se puede ver el resultado en el análisis de vibraciones a un rodamiento con defecto en la pista exterior.

THE USE OF HILBERT´S TRANSFORM TO DIAGNOSTIC VIBRATIONAL PROBLEMS. TRANSIENTS ANALISYS

ABSTRACT
This work is a review of the Hilbert transform, its comparison with the Fourier transform and a vision of the capabilities of this unknown tool of treatment of signals and vibrations. With this tool the instantaneous frequency concept appears, as consequence of the supposition of a non-linear and not stationary time series, that is to say of a series in which the frequency is not constant in the time, neither that of the components in those that it is fragmented It is also exposed the use of the Hilbert transform and the method of decomposition that makes it could be used in an informatic way. Finally it shows the result in the analysis of vibrations in a bearing with bug in the external track.
Key words: Transform, Fourier, Hilbert, frecuency, instantaneous, spectrogram.

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