Analysis for Queueing Networks of Flexible Manufacturing Systems with Dynamic Priority

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  • Dynamic Priorityを持つFMS待ち行列ネットワークの解析
  • Dynamic Priority オ モツ FMS マチギョウレツ ネットワー

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FMS (Flexible Manufacturing Systems) have been modelled mostly as closed queueing networks. Most of these models have been assumed FCFS (First Come First Served) or static priority service discipline at station. In static priority service discipline, the priority of job is a fixed quantity independent of waiting time and denotes the priority of the particular class to which the job belongs. Sometimes, in such case low priority classes of job are not selected for service. In this paper, a nonpreemptive dynamic priority service discipline in which the priority increases with actual waiting time in the queue is used by the station. This service discipline will control system performance by altering parameters of function that define the priority of job. We present an approximate solution method by recursive calculation to give mean waiting time in the queue of each job class, and show that its solution is valid.

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