The Researches on Target WIP Optimization of the Bottleneck Equipment Group

摘要

In this paper, we study the target WIP optimization problem of the bottleneck equipment group on the semiconductor production line. Based on the constructed target WIP calculating formula of the bottleneck equipment group, the problem of optimizing target WIP of the bottleneck equipment group is transformed into the problem of seeking for an optimal value of target WIP safety factor which is a variable in the formula. With that an optimization algorithm is designed for solving the optimal value of target WIP safety factor of the bottleneck equipment group. The algorithm is realized by integrating GA and simulation. Finally a simulation case study is presented based on a Mini-Fab model with all of the essential features of the semiconductor production line. Further we point out that it is a dynamic course for optimizing the target WIP of the bottleneck equipment group.