考虑装载容量和仓储空间约束的库存控制策略研究
发布时间：2018-08-22 18:18
【摘要】：对于制造企业来说，库存成本在生产成本中所占比重很大，如何有效的通过控制库存策略来降低库存成本，对于企业来说有很重要的实际意义。 本文主要研究的是制造企业库存成本的最优控制策略。该问题有有限个计划周期，各计划周期内的需求服从离散分布，目标是寻找一种最优库存控制策略，使得计划周期内的库存成本（运输成本、库存持有成本和缺货惩罚成本之和）最小。 本文以(s, S)库存策略作为基础，结合制造企业的实际情况，建立了三个库存策略模型，分别是均衡(s, S)库存控制策略模型、动态(s, S)库存控制策略模型和仓储空间有限的库存控制模型。均衡(s, S)库存控制策略模型是在一个计划周期内，所有的阶段采取同一组(s, S)补货策略；动态(s, S)库存控制模型是在一个计划周期内，所有的阶段可以采用不同的(s, S)补货策略，是均衡(s, S)库存控制模型的推广。这两种库存控制策略模型都包括三种不同的库存策略：严格(s, S)库存策略、带参数r的(s, S)库存策略和选择性执行(s, S)库存策略。带参数r的(s, S)库存策略是在严格(s, S)库存策略的基础之上增加参数r控制运输车辆数，相对于严格(s, S)库存策略更具有实际意义；选择性执行(s, S)库存策略是对带参数r的(s, S)库存策略的一种推广：通过状态“0”、“1”控制每个阶段是否需要补货。仓储空间有限的库存控制模型，是在企业的仓储空间不能满足所有零件同时补货的情况下，如何对零件安排有效的补货策略，使得总库存成本最低。 对于每种库存策略，，都有相应的算例描述和实例分析，通过对实例的数值分析可以得出：合理的选取补货策略，可以显著的降低库存成本。
[Abstract]:For manufacturing enterprises, inventory costs account for a large proportion of production costs, how to effectively control inventory strategy to reduce inventory costs, for enterprises to have a very important practical significance. This paper mainly studies the optimal control strategy of inventory cost of manufacturing enterprises. The problem has a limited number of planning cycles, and the demand for each planning cycle is distributed from discrete to discrete. The goal is to find an optimal inventory control strategy so that the inventory cost (transportation cost) in the plan cycle, The sum of inventory holding cost and shortage penalty cost) is the smallest. Based on (s, S) inventory strategy and the actual situation of manufacturing enterprises, this paper establishes three inventory strategy models, which are equilibrium (s, S) inventory control strategy model. Dynamic (s, S) inventory control strategy model and inventory control model with limited storage space. The equilibrium (s, S) inventory control strategy model adopts the same (s, S) replenishment strategy in all stages of a planning cycle, while the dynamic (s, S) inventory control model is used in a planning cycle. Different (s, S) replenishment strategies can be adopted in all stages, which is the generalization of equilibrium (s, S) inventory control model. The two models of inventory control strategy include three different inventory strategies: strict (s, S) inventory strategy, (s, S) inventory strategy with parameter r and selective execution of (s, S) inventory strategy. The (s, S) inventory strategy with parameter r is to add parameter r to control the number of transport vehicles on the basis of strict (s, S) inventory strategy, which has more practical significance than strict (s, S) inventory strategy. Selectively executing (s, S) inventory policy is a generalization of (s, S) inventory policy with parameter r: through state "0", "1" controls whether replenishment is required at each stage. The inventory control model with limited storage space is how to arrange effective restocking strategy to make the total inventory cost lowest when the storage space of the enterprise can not satisfy all the parts replenishment at the same time. For each inventory strategy, there are corresponding example description and case analysis. Through the numerical analysis of the case, it can be concluded that reasonable selection of replenishment strategy can significantly reduce the inventory cost.
【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F425;F274
本文编号：2197917
[Abstract]:For manufacturing enterprises, inventory costs account for a large proportion of production costs, how to effectively control inventory strategy to reduce inventory costs, for enterprises to have a very important practical significance. This paper mainly studies the optimal control strategy of inventory cost of manufacturing enterprises. The problem has a limited number of planning cycles, and the demand for each planning cycle is distributed from discrete to discrete. The goal is to find an optimal inventory control strategy so that the inventory cost (transportation cost) in the plan cycle, The sum of inventory holding cost and shortage penalty cost) is the smallest. Based on (s, S) inventory strategy and the actual situation of manufacturing enterprises, this paper establishes three inventory strategy models, which are equilibrium (s, S) inventory control strategy model. Dynamic (s, S) inventory control strategy model and inventory control model with limited storage space. The equilibrium (s, S) inventory control strategy model adopts the same (s, S) replenishment strategy in all stages of a planning cycle, while the dynamic (s, S) inventory control model is used in a planning cycle. Different (s, S) replenishment strategies can be adopted in all stages, which is the generalization of equilibrium (s, S) inventory control model. The two models of inventory control strategy include three different inventory strategies: strict (s, S) inventory strategy, (s, S) inventory strategy with parameter r and selective execution of (s, S) inventory strategy. The (s, S) inventory strategy with parameter r is to add parameter r to control the number of transport vehicles on the basis of strict (s, S) inventory strategy, which has more practical significance than strict (s, S) inventory strategy. Selectively executing (s, S) inventory policy is a generalization of (s, S) inventory policy with parameter r: through state "0", "1" controls whether replenishment is required at each stage. The inventory control model with limited storage space is how to arrange effective restocking strategy to make the total inventory cost lowest when the storage space of the enterprise can not satisfy all the parts replenishment at the same time. For each inventory strategy, there are corresponding example description and case analysis. Through the numerical analysis of the case, it can be concluded that reasonable selection of replenishment strategy can significantly reduce the inventory cost.
【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F425;F274
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