ARTÍCULO
TITULO

Análisis multifactorial de varianza del desempeño de un jobshop dinámico con due dates basado en regresión múltiple

Marcos Neira Rodriguez    
Eduardo Salazar Hornig    

Resumen

Se realiza un análisis de varianza mult1factorial del desempeño global de un sistema de producción tipo taller con centros de trabajo de multicapacidad (flexible jobshop ), considerando los factores regla de despacho , balance de centros de trabajo y proporción de due dates fijados externamente . El desempeño del sistema, observado mediante simulación, se evalúa a través de una medida que pondera el atraso absoluto y el tiempo de flujo. Los due dates son fijados internamente a través de regresión lineal múltiple. Los resultados estadísticos muestran que los tres factores son significativos en el desempeño del sistema, y que en escenarios donde ambas medidas tienen igual ponderación, si los due dates son fijados internamente FIFO y SPT produ­ cen mejores resultados, mientras que en presencia de due dates fijados externamente . EDD combinado con FIFO (EDD combinado con TWKR) es la mejor alternativa para el caso balan­ ceado (desbalanceado) .A multifactorial analysis of variance of the performance of a jobshop like production system with multicapacity (flexiblejobshop) is realized,by considering the factors dispatching rule, workstation capacity balance and proportion of due dates setting done externally. The system performance , observed by simulation, is evaluated by a measure that weight the absolute lateness and the flow time. Due dates setting is done intemally by multiple linear regression.The results shows that the three factors are significant with respect to the system performance, and in scenarios in which both measures are equally weighted, if the due dates setting is done intemally FIFO and SPT produces better results, while in presence of externally due date setting, EDD combined with FIFO (EDD combined with TWKR) is the better alternative for the balanced (unbalanced) case.

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