Consideraciones para la aplicación del procesamiento ciclo estacionario avanzado al diagnóstico de cojinetes de rodamientos. // About the advanced cyclo-stationary processing application on rolling bearing diagnostic.
Abstract
La aplicación del procesamiento ciclo-estacionario tradicional al análisis de vibraciones para el diagnóstico del estado de
los cojinetes de rodamientos presenta un serio problema que se relaciona con la ocurrencia de falsas alarmas. En dos
recientes trabajos, sus autores han empleado técnicas diferentes para aplicar el procesamiento ciclo-estacionario “puro”, en
aras de resolver este problema. En este trabajo se resumen las bases de estos trabajos y se comparan las técnicas más
atractivas presentadas en tales investigaciones. Para efectuar la comparación, se simulan las señales de vibración
producidas por fallos locales en cojinetes de rodamientos, a partir de un modelo que constituye el más completo y práctico
de los establecidos hasta el momento. Se mostró que el enfoque de aplicación del procesamiento ciclo-estacionario basado
en la mediana fue el que mejor resultado ofreció.
Palabras claves: Análisis de vibraciones, diagnóstico de maquinarias, procesamiento cicloestacionario.
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Abstract:
Traditional cyclostationary processing application on vibration analysis for rolling bearings condition diagnosis carries on a serious
problem related to false alarms occurrence. Two recent researches describe the use of different techniques, based upon “pure”
cyclostationary processing, in order to solve this problem. In this paper, basis of these works are summarized and the most suited
techniques are compared. During comparison, vibrations produced by located rolling bearings failures are simulated using a practical
and completed model. The cyclostationary processing application based on the median probed to be more effective.
Key Words: vibration analysis, machine condition diagnostic, cyclostationary processing.
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