汽车装备企业云制造的订货决策系统研究.doc

汽车装备企业云制造订货决策系统研究 摘要 随着科学技术的发展和信息时代的到来，生产制造模式也面临着重大变革，传统的生产制造模式已无法满足当前复杂多变的市场需求，而云制造的提出使生产制造更加协同化，为制造资源共享提供了可能，同时可以节约成本，更大程度的满足客户需求。本文从云制造理念出发，主要研究了云制造环境下企业订单的分配和和云制造环境下企业的订货决策，为云交易平台管理者进行订单分配和云制造环境下企业进行订货决策提供参考。 首先，本文介绍了云制造及其相关理论和概念，包括云制造环境下企业生产的特点和云造环境下企业订货决策的影响因素，为下文进行订单分配和订货决策的研究奠定了基础。其次，建立了云制造环境下具有目标约束函数的订单分配模型，其中目标函数是云制造环境下企业完成订单后的产品运输总成本，约束函数除保证产需平衡外，仍需满足订单在企业的平均逗留时间即平均等待时间和平均被加工时间之和不超过需求地产品交货期以及订单完工率大于订单到达率，并利用表上作业法给出了求解及优化步骤，其中初始分配方案利用罚数法确定。再次，对云制造环境下企业订货策略进行了分析，给出了订货点和订货批量求解方法，其中订货点在安全库存量的基础上确定，利用期望成本最小原则，通过微分的方法确定最佳订货批量，并给出了云服务平台统一订货策略。最后以中国汽车装备企业为例对其进行了云制造环境下企业的订单分配和订货决策分析，研究表明利用本文建立的订单分配模型可以实现产品运输成本较小，订货点和订货批量的计算方法使得云制造环境下企业进行订货决策有了依据。 关键词：云制造；订单分配；订货决策；排队论 ABSTRUCT With the development of science and technology and the arrival of information age, production mode is also facing major changes. The traditional production mode has been unable to meet the needs of the complex and volatile market. Based on the concept of cloud manufacturing, this paper mainly focuses on the distribution of enterprise orders and orders for the enterprises in the cloud manufacturing environment. First of all, this paper introduces the cloud manufacturing and its related theories and concepts, including the characteristics of enterprise production and the factors that affect the order decision-making under the cloud manufacturing environment. The study of the strategy laid the foundation. Second, the establishment of the cloud manufacturing environment with order allocation model based on constraint function of the target. The target function is cloud manufacturing enterprises under the environment of complete order products total transportation costs, constraint functions in addition to ensure the balance between production and demand, still need to meet orders in enterprises of the average length of stay is the average waiting time and average processing time and does not exceed demand product delivery and order completion rat