A Case Study of Estimating the Parameters of (s,S)system by Moving Average Method

• Main Authors: TANG,KUO-TSUNG, 湯國宗
• Other Authors: WANG,CHIEN-CHIH
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/58626821115170438049

碩士 === 明志科技大學 === 工業工程與管理系碩士班 === 103 === This is a case study in order to solve material inventory issues of a domestic LED manufacturer. Because the inventory system was out of control, so it appear problems including inventory level to high or low, idle stock, etc. More than ninety percent of material items have the inventory stock level problems, it cause cost overstocking or urgent purchasing. Through the processes of interview, data collection, data analysis, solution finding, then developing an inventory control system by combining the (s,S)system and moving average method. Base on fundamental assumption of the case company, using the moving average method to calculate the monthly average of material consumption, then set up the parameters of safety stock, reorder point, order quantity and maximum stock to develop an inventory system with dynamic parameters control function. This new inventory system is operated by Excel program that supporting automatically continuous counting and material replenish operation. Operator can be easy, exact and fast to finish inventory management operations. The results of study are found that new inventory system can save about one thousand four million dollars from inventory cost and inventory issues also be solved after new system implement. Through the ABC analysis, turnover analysis and new counting plan, the new system can maintains in good condition. During research period do not spend money and financial performance is significant.