内示情報を用いた未達率指標による生産計画システムの提案（II）

―未達率指標の特性解析と基点在庫方策との比較

抄録

In the previous paper, we proposed Mass Customization Production Planning & Management System (MCPS) based on unfulfilled-order-rate by using Advance Demand Information which is called ‘Naiji System’ as an unique corporation between a maker and suppliers in Japan, and 3 indicators to estimate the unfulfilled-order-rate. Applying these indicators to the model, we investigated the behavior of unfulfilled-order-rate at the final period in the planning horizon.
In this paper, we propose a new model for purchasing, and investigate the unfulfilled-order-rate at each period and the impact to the total inventory. We find that the total inventories become 5.9%-20.0% decreases by using SO_n rather than by using SO_n(0). And we enhance a base-stock policy to a new one with multi-period. We prove that the MCPS model for purchasing by using SO_n(0) is equivalent to the base-stock policy with multi-period under the specified condition. Under this condition, the proposed model by using SO_n decreases inventories more than the base-stock policy with multi-period.