2-Stage Design for a Job-Shop Production System with Backlog Control and Its Application Study

Abstract

Suppose that a manager controls a job-shop production system with the backlog by order-selection and switch-over. This paper discusses the 2-stage design problem of the job-shop production model with backlog control from the views of theory and an application study. For this purpose, we apply the 2-stage design method (Matsui, 1999) to the two models : periodic and semi-dynamic types. By the 2-stage design method, the economic traffic that maximizes the net reward (=reward-cost) is decided at the first stage. At the second stage, the economic leadtime is set under the economic traffic. First, a behavioral comparison of discrete and continuous types is given by simulation, and the 2-stage design method for continuous type is showed. Next, the periodic and semi-dynamic models of A company are given under three cases and eight arrival patterns, and the usefulness and robustness of the 2-stage design method are exhibited.