Releasing and Dispatching with Machine-Dedication Characteristics in a Semiconductor Fab

• Main Author: 張永政
• Other Authors: 巫木誠
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/58416667482799839493

碩士 === 國立交通大學 === 工業工程與管理系所 === 92 === This thesis investigates the releasing and dispatching rules for a semiconductor fab with machine-dedication characteristics. Huang in 2003 has proposed a dispatching algorithm for such a scenario, which seems to be promising but was not well justified. This research extensively compare Huang’s algorithm with some other methods in literature by simulation, where the performance measure is hit-rate (on-time delivery rate). Experiment results show that Huang’s dispatching algorithm indeed outperforms most previous dispatching methods. Since uniform releasing policy was used In Huang’s algorithm, we replace it by WR (workload regulation) policy to see if better performance can be achieved. By simulation experiments, such a modification causes relatively little improvements. That is, dispatching policy seems to be more important than releasing policy in such a machine-dedication scenario.