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Modeling of FMS under Uncertainty Using Stochastic Petri Nets.

Hatono, Itsuo; Katoh, Norihiro; Yamagata, Keiichi; Tamura, Hiroyuki

In: PNPM89. Proceedings of the Third International Workshop On Petri Nets and Performance Models, 1989, Kyoto, Japan, pages 122-129. Los Alamitos, CA, USA: IEEE Computer Society Press, 1990.

Abstract: The paper deals with modeling of Flexible Manufacturing Systems (FMS) under uncertainty and evaluation of a rule base for on-line scheduling. To present uncertain events in FMS, such as failure of machine tools, repair time and processing time, the authors apply continuous-time and discrete-time stochastic Petri nets with hierarchical structure to constructing the FMS model. For obtaining an efficient schedule of FMS with on-line real-time basis, the authors construct a rule base and evalutate the performance of the rule base using the FMS simulation system proposed in the paper.

Keywords: uncertainty; flexible manufacturing system; failure (of machine tools); continuous-time stochastic net; performance.

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