MODELADO ADAPTATIVO PARA CELDAS DE MANUFACTURA FLEXIBLE USANDO REDES DE PETRI INTERPRETADAS (ADAPTIVE MODELING OF FLEXIBLE MANUFACTURING CELLS USING INTERPRETED PETRI NETS)
Resumen
Debido a las características de producción que presentan las celdas de manufactura flexible es necesario contar con modelos capaces de representar su comportamiento para posteriormente analizar propiedades como la ausencia de bloqueos o para implementar controladores. El objetivo es presentar un enfoque de modelado adaptativo basado en el proceso de identificación asintótico para celdas de manufactura flexible utilizando redes de Petri interpretadas. La principal contribución es que con este enfoque se pueden construir modelos a partir de ciclos de producción observados durante la ejecución del sistema. Esto permite actualizar el modelo calculado cada vez que se presente un nuevo comportamiento generado por diferentes planes de producción. El principio de modelado consiste en leer las señales de salida del sistema y calcular la estructura de una red de Petri interpretada. Los modelos obtenidos utilizando este enfoque son equivalentes a los calculados con otras herramientas.
Palabras Clave: Modelado, Redes de Petri, Sistemas de Manufactura Flexible.
Abstract
Given the production characteristics of flexible manufacturing cells, it is necessary to have adaptable models capable of representing their behavior to analyze properties such as the absence of deadlocks or to implement controllers. The objective is to present an adaptive modeling approach based on the asymptotic identification process for flexible manufacturing cells using interpreted Petri nets. The main contribution is that using this approach models can be built from production cycles observed during the execution of the system. This fact allows updating the model each time a new behavior generated by different production plans occurs. The modeling approach consists in reading the output signals of the system to compute the structure of an interpreted Petri net. The models obtained using this approach are equivalent to those computed using other techniques.
Keywords: Flexible Manufacturing Systems, Modeling, Petri nets.
Texto completo:
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