标题: | 利用DDMRP之缓冲管理及历史需求与市场预测资讯改善晶圆制造厂之存货管理 Integrating Historical Demand and Market Forecasts in DDMRP Buffer Management to Improve Inventory Management in Wafer Foundry |
作者: | 王雅群 Wang, Ya-Chun 张永佳 Chang, Yung-Chia 工业工程与管理系所 |
关键字: | 限制理论;需求拉动补货策略;缓冲管理;DDMRP;Theory of constraints;Demand-pull replenishment policy;Buffer management;Demand driven material requirement planning |
公开日期: | 2015 |
摘要: | 限制理论(Theory of Constraints, TOC)所提出的需求拉动补货(demand-pull replenishment)结合缓冲管理管理(buffer management) (以下简称为DPBM)的方法较传统的存货理论中的补货策略简单且容易应用,在产业界也有许多成功应用的实绩。目前已有研究提出改善传统的DPBM方法使其能适用于需求变异大、生产前置时间长且生命周期短产品的存货管理,但无论是传统的DPBM方法或是现有对DPBM方法的改良,都还是将目标库存(即缓冲)等分为三区,依照库存水位与目标库存的相对关系作为调整目标库存的依据,并未将需求的变化情况纳入考量。有别于传统对缓冲的分区方式,本研究应用在需求驱动之物料需求规划(demand driven material requirement planning,DDMRP)方法中对缓冲分区的概念,利用产品的历史需求资讯及需求之变异程度为依据以决定缓冲分区大小,使缓冲的分区方式更贴近实际需求状况。本研究并利用历史的需求资讯与顾客所提供之对市场的滚动式预测,设计一套补货与缓冲调整机制。为验证本研究所提出之方法之可行性与有效性,本研究利用国内某晶圆制造厂所提供之实际产品资料与本研究以模拟方式所产生出之四种不同型态的需求资料对本研究所提出之方法进行测试,研究结果显示,并与文献中所提之方法比较,本研究所提出之方法确实能维持高服务水准但却降低平均库存,让DPBM方法应用于需求变化大、前置时间长与生命周期短产品的存货管理,有更好的效果。 The demand-pull replenishment policy and buffer management (shorted as DPBM) method proposed by the theory of constraints (TOC) is simple and easy to implement. Man successful applications have been reported in practice. There are some studies developed different methods to improve traditional DPBM so that it can apply to management the inventory of the product with large demand variation, long production lead times and short product life cycle. All the existing DPBM-based method evenly divide the target buffer into three zones and adjusting the size of target buffer based on the inventory status. This study, applied the concept presented in the buffer management buffer of the demand driven material requirement planning (DDMRP) method to determine the zone assignment of the target buffer. In this method, the size of each zone is determined by the variable of demand. This study uses real demand data provided by a wafer foundry in Taiwan as well as simulated demand data to demonstrate the efficiency and effectiveness of the proposed method. The numerical experiments showed that the proposed method outperformed the existing ones in terms of average inventory and service level. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT070253316 http://hdl.handle.net/11536/126405 |
显示于类别: | Thesis |