摘要
现代企业及其产品发展日新月异。制造企业的竞争,已经由企业个体间的竞争逐步转变为供应链企业之间的竞争。对质量链的管理也从注重企业内部管理,转变为兼顾企业内部及供应链上产品质量水平的管理。在此背景下,对于产品生命周期上动态最优化决策问题的研究就更具有实际意义。
本文借鉴了最优控制的现值汉密尔顿动态最优化模型,用于对连续问题动态趋势进行判断。与以往最大最小值原理求解静态最优解相比,此方法可以判断产品生命周期不同时期的制造商最优决策趋势,更具有实际意义。
本文是在以往静态研究的基础上,参考供应链契约决策变量,采用制造商现值汉密尔顿动态最优控制模型对该问题进行求解。首先,建立了需求随时间变化的耐用品行业动态最优化决策模型,并证明出相应结论；其次,在此基础上建立了需求随时间和质量变化的耐用品行业动态最优化决策模型,并证明相关结论；最后,本文根据需求随时间和质量变化的耐用品行业动态最优决策模型的相关结论,进行仿真计算,并分析了相关结论。
本文做的主要工作有：
(1)对制造商汉密尔顿动态最优模型进行了总结与分析；
(2)建立“需求随时间变化的耐用品行业动态最优化决策模型”并对相应结论进行了证明,分析了相关结论的实际经济含义；
(3)在“需求随时间变化的耐用品行业动态最优化决策模型”基础上,考虑了需求随时间、质量及价格变化的情况,并对模型相关结论进行了证明与分析。
(4)对改进后模型的结论进行了仿真计算并分析了其中相关参数的实际经济含义。
Competition in manufacturers has changed from that between individual manufacturers to competition between different supply chains. Therefore quality chain management has changed its focus from inner management to quality control in all products on the supply chain. In addition, due to fast updating rate of products and rapid development of individual company, it has practical meaning to investigate dynamic optimum decisions for different product development stages.
Hamilton's dynamic optimum decision model is employed for judgment on dynamic trend of continuous issues. Compared to maximum and minimum principle for solving static optimum result, this method could be used to decide optimum trend at different stages of product development, and has more operability.
Based on previous research on static studies, referencing on supply chain contract decision parameters, and on depend of Hamilton's dynamic optimum decision method, this research has first built a dynamic optimum decision model for long lasting product industry with which demand changing by time and has proved corresponding results. Then, it has set up a dynamic optimum decision model for long lasting product industry of which demand changes by time and quality and has proved corresponding modified results. At last this paper has conducted a simulation calculation and analyzed corresponding results depending on the model.
Tasks of this paper are:
(1) Summarize and analyze manufacturers Hamilton dynamic optimum model.
(2) Set up "dynamic optimum decision mode for long lasting product industry with its demand changing by time". Prove corresponding results and analyze their economical practical significance.
(3), Based on the "dynamic optimum decision mode for long lasting product industry with its demand changing by time", considering the "dynamic optimum decision mode for long lasting product industry with its demand changing by time, quality and price, proving corresponding results and analyze their economical practical significance.
(4) Make a simulation calculation depending on the modified results and analyze practical economic meaning of relative parameters.
引文
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