Simulation Comparisons of Dispatching Rules for Multitasking Workers in Flow Shop with High Priority Job Orders

• Main Authors: ChengHung Hsu, 徐政宏
• Other Authors: H.C. Horng
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/82996242747309153891

碩士 === 朝陽大學 === 工業工程與管理系碩士班 === 88 === High priority job orders are often encountered by manufacturing industries. They need to be taken care of to improve a company’s customer service level as well as to keep the ordinary orders shipping on schedule. This research exams the feasibility and effects of adding multitasking workers to the production line when high priority job orders occur. By computer simulation, it is found that adding multitasking workers indeed increase the system’s ability in handling these high priority job orders. This research further compares the dispatching rules for dynamically assigning multitasking workers in the production line when high priority job orders occur. Two responses variables, the cycle time for the high priority job order and the system’s recovery time, are chosen and a 25 factorial experiment is conducted using computer simulation. The simulation results show that LSF (Last Station First) is the best dispatching rule when the cycle time for the high priority job order is considered. On the other hand, when considering the best when the system’s recovery time, LNQ (Length of the Queue) is the best when process times at each station is normally distributed and FASFS (First Arrived in the System, First Serve) is the best when it’s exponentially distributed.