Supply coordination based on bonus policy in assembly under uncertain delivery time
Supply coordination based on bonus policy in assembly under uncertain delivery time
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DOI：
10.3901/cjme.2013.02.293
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发表时间：
2013-03
影响因子：
4.2
通讯作者：
Guo Li;Mengqi Liu;Zhaohua Wang;Bingzong Peng
中科院分区：
文献类型：
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作者：
Guo Li;Mengqi Liu;Zhaohua Wang;Bingzong Peng
现有的不确定交货期下的供应协调研究主要集中在供应商和制造商之间的合作，目标是使双方的总成本最小，并在分散决策下找到相对最优解。在进行供应协调时，通常不考虑装配系统中供应商之间的协同。因此，由于供应商之间的零部件交付不匹配，制造商的生产经常被推迟。因此，为了保证装配系统中的供应协调，必须考虑供应商之间的协作。本文研究了交货期不确定的两个供应商和一个制造商的装配系统。建立了该模型，给出了分散决策下的最优解。此外，两个供应商的成本函数都是凸的，并且两个供应商之间存在唯一的纳什均衡。然后对供应协调下的最优决策进行了分析，并将其作为衡量供应协调的基准。此外，装配系统的总成本在商定的交货时间内是联合凸的。为了实现供应协调，在不确定交货期的情况下，研究了装配系统的分红策略，并且分红策略下的总成本必须低于分散决策下的总成本。数值分析和灵敏度分析表明，在分红策略下，装配系统的成本与在供应协调下相同，而在分权决策下，装配系统中各方的成本低于分权决策下的成本。本文的研究使得装配系统中每一方的总成本最小，保证了供应商和制造商之间的供应协调，提高了整个供应链的竞争力。
The existing research of supply coordination under uncertain delivery time mainly focuses on the collaboration between the supplier and the manufacturer, which aim at minimizing the total cost of each side and finding comparative optimal solutions under decentralized decision. In the supply coordination, the collaboration between suppliers in assembly system is usually not considered. As a result, the manufacturer’s production is often delayed due to mismatching delivery of components between suppliers. Therefore, to ensure supply coordination in assembly system, collaboration between suppliers should be taken into consideration. In this paper, an assembly system with two suppliers and one manufacturer under uncertain delivery time is considered. The model is established and optimal solution is given under decentralized decision. Furthermore, the cost functions of two suppliers are both convex, and a unique Nash equilibrium exists between two suppliers. Then the optimal decision under supply coordination is analyzed, which is regarded as a benchmark for supply coordination. Additionally, the total cost of the assembly system is jointly convex in agreed delivery time. To achieve supply coordination a bonus policy is explored in the assembly system under uncertain delivery time, and the total cost under bonus policy must be lower than under decentralized decision. Finally the numerical and sensitivity analysis shows the cost of assembly system under bonus policy equals that under supply coordination, and the cost of each side in assembly system under bonus policy is lower compared to that under decentralized decision. The proposed research minimizes the total cost of each side with bonus policy in assembly system, ensures the supply coordination between suppliers and the manufacturer, and improves the competiveness of the whole supply chain.