| Summary: | 碩士 === 中原大學 === 工業與系統工程研究所 === 98 === With a progress of science and technology and micro profit age coming, manufacturers often maintain competitive capabilities by product price strategies. Because of the side effects of the pricing strategies, manufacturers have to deploy an effcient and economized production. Some assembly manufacturing produces the components step by step. After the coponents finished, they assemble all of the components. Now, we consider a assembly manufacturing which produces the components at the same time that can save a lot of time in production system. A majority of manufacture industries tend to make production more efficient and more economical by using science and technology. In the opposite, if manufacturers fail in effective production, they will lose their competitive capabilities. Therefore, manufacturers must renew their modules of production system.
Firstly, we consider a MTO fork-join production system. In order to reduce the waiting time of customers, we add inventory in the end by using base-stock control policy. To extend the system, we consider a MTS/MTO fork-join hybrid production system that can receive two types of demands, no wait demnads and wait demands, and both of two types of demands satisfied by standard products. For MTS assembled structure, how to increase service level for no wait demands becomes one significant index, which refers to effective arrival rate herein; For MTO structure, how to increase customer satisfaction becomes one important topic for study, which refers to shortening demand response time herein.
This study plans to approximate original model by using alternative model, compares errors between the performance indices including effective arrival rate and On-Time-Delivery-Rate (OTDR), proving the feasibility of approximation method proposed by us. By using the performance indices, we can find the optimal base-stock level under the requirement service level.
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