基于采购条件限制的供应链库存水平分析

Analysis of inventory level under procurement constraints in supply chain

库存是影响供应链系统成本性能的主要因素之一,有效地减少库存可以降低整个供应链系统的成本水平,因此库存管理是优化供应链运作、提高竞争优势的重要手段。针对库存管理中的(s,S)策略,建立了库存水平变化的模型,分别分析了无采购条件限制和有采购条件限制下的库存水平的变化,并分别给出了其期望值和方差。

Because of inventory is one of the major factors that affect the performance of supply chain system, the effective reduction of inventory can reduce effectively the cost level of the total supply chain. Therefore, inventory management is an important means to optimise the operation of supply chain and to enhance the competitive advantage. Considering the （s ,S）policy in inventory management, establishes a model of inventory level. Then, the change of inventory level with and without procurement constraints is analysed respectively, and their expectation and variance is provided.