A comparison of MRP lot sizing methods considering capacity change costs
研究了物料需求计划中不同批量确定模型对产能需求计划工作中心负荷的影响，比较了经济订货量、逐批订货、定期订货量和最小总成本等模型在考虑准备、库存持有和产能相关成本时的表现。
Abstract Capacity management is the planning and leveling of resources required (load) against the resources available (capacity). In this study, the lot size models used by Material Requirements Planning (MRP) had a major effect on the work center load profiles generated by Capacity Requirements Planning (CRP). Therefore, the selection of lot size models for MRP systems is an important decision for capacity management as well as materials management. The results of this study highlight the operating characteristics of specific lot size models considering setup, inventory carrying, and capacity associated costs. For example, the Economic Order Quantity model and the Lot‐For‐Lot model in certain situations can help level load. The Periodic Order Quantity and Least Total Cost models especially for high cost structure ratios tend to result in erratic and lumpy work center load profiles. The reasons for such operating behavior are examined. Other concepts and relationships important to capacity management are discussed.