生産コストに基づいた意思決定支援システムの一提案 : 適正ロットサイズの決定問題への適用  [in Japanese] A Proposal of Decision Making Support System Based on Product Cost : Application into Lot Sizing Problem  [in Japanese]

Manufactures have paid a great deal of effort to obtain agility in their manufacturing to avoid losing commercial opportunities. To solve these problems, several methodologies for production planning and operating manufacturing systems have been proposed. Additionally, although variety of lot sizing methods has been proposed, most of their objective functions are based on time and quantity criteria. However, the most important criterion is varied dynamically in real manufacturing environment. Product cost is calculated by integrating results of all activities in production processes, so product cost is treated as a comprehensive criterion to evaluate production performance. In this study, we develop a cost evaluate system and it is implemented on a Distributed Virtual Factory (DVF) to realize rational cost based decision makings. The efficiency of product cost as a criterion is discussed through simulation experiments with DVF.