| Summary: | 碩士 === 國立交通大學 === 工業工程與管理系 === 88 === Short-term unbalance of capacity between supply and demand happens frequently in semiconductor manufacturing. Under the condition that not delaying the confirmed orders, this thesis intends to solve the capacity exchange problem so as to transfer the capacity of a prescheduled order to the inserted order.
First, the capacity estimation module estimates the time period of the critical machine will be used by each order. It thus provides the loading information of critical machines. Next, due-date evaluation module evaluates the practicability of achieving the due date of the inserted order. Third, the candidate-order selection module picks out the candidate orders that may fit the capacity requirement of inserted order to the critical machine by using the results of the capacity estimation module. Then, exchange evaluation module evaluates the system performance once capacity exchange is made to decide if the candidate order can be an option for exchanging. Finally, the exchangeable orders sorting module decides the sequence among final candidate orders.
The case study shows that the capacity exchanging mechanism not only achieves the performance targets, but also fulfills the due date of inserted order. The simulation also shows that without making order exchanging, the inserting of the new order will diminish delivery target. Thus, the capacity exchanging mechanism is necessary in maintaining system performance and on time delivery.
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