System Dynamics Applied in Capacity and Demand Balancing－A Case Study of Wafer Fabrication Factory

• Main Authors: Je-Shen Wu, 吳哲慎
• Other Authors: Ping-Teng Chang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/63498217773971673993

碩士 === 東海大學 === 工業工程與經營資訊學系 === 96 === For the past few years the public demand for IC products significantly increase the semiconductor industry increasingly fierce competition, in the face of the huge of the demand, due to competition with the pressure, sales departments have constantly received orders to enhance the company's profitability. If they don’t have a good ATP in there capacity planning or capacity simulation, then directly execute the production schedule. The results will cause of capacity shortage, capacity utilization low, time of delivery can't satisfied, the loss of customers etc. So on the content of this research build a simulation model can combine capacity planning and demand forecast. This research uses the system dynamic method to construct the model, system dynamics has a unique characteristic of complex, feedback, nonlinear, linked together and delay, really presents behavior of the system, provides the effective simulation and the analysis complex dynamic system tool. Observe the behavior characteristics of systems , and the use of causal feedback to clarify the interaction of elements in the system, for example if Capacity utilization is up then Unit Cost will down, however Capacity utilization too high will cause on-time delivery down then loss the orders. Then extrapolated the causal feedback loop hidden behind the problem, after fully understood between the element each other influence, will be converted to a mathematical model. Therefore this research wants using the system dynamics method for simulation the behavior model of wafer fabrication, use the characteristics of capacity utilization to analysis about capacity planning and the loss of customers, and integrating system dynamics feedback characteristics and ATP Mechanism. The method of this research is in view of production and marketing unbalanced situation, and different ATP rules. Purpose of making Wafer Fabrication Factory be able to take their own decision-making and the constraints of capacity resource and use the decision support model in the production and demand for the company's best interests