Cálculo de la mantenibilidad usando la distribución gamma//Assess the maintainability using gamma distribution
Abstract
El objetivo de esta investigación fue identificar las distribuciones más usadas en el cálculo de la mantenibilidad a partir de los parámetros de Thom utilizados para estimar los parámetros de la distribución gamma. Los datos utilizados agrupan valores de tiempo de reparación entre los años 2009 a2015 que representan las tres distribuciones normal, exponencial y Weibull Se obtuvo como resultado una coincidencia de 99.92 % para la distribución exponencial y 95% para la normal. Para la distribución de Weibull se demostró que él método de aproximación de Thom es válido para estimar este tipo de distribución y que pueden ser usados los parámetros de esta como parámetros de la distribución Weibull con un error de 3%. Para validar este estudio se comparan los resultados con los obtenidos con los métodos Thom y Weibull.
Palabras claves: mantenibilidad, distribución Weibull, normal, exponencial y gamma, parámetros de forma y escala.
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Abstract
To can identify way the most distribution used in the assess maintenance from the Thom parameters to using for estimate the gamma distribution parameters was the target of this research. The dates used to comprise several time of repair between 2009 and 2015 years that represent the normal, exponential and gamma distribution.99,92 percent of coincident was obtained for exponential distribution and 95percent for normal distribution. For Weibull distribution on showed that approach Thom method is indeed valid forestimate Weibull distribution and the parameter of this distribution can be use as the Weibull distribution with error of 3 %. To validate this study on compare the results with the obtained results for the several well-known methods including Statgraphic.
Key words: maintainability, Weibull, normal, exponential and gammadistribution, scale and shape parameterDownloads
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