Development of an international production and distribution simulator under global production environments

最近，供应链管理（SCM）的概念引起了人们的关注，因为它可以在供应商、制造商和销售商的集成系统中实现顺畅的物料流动。本研究的目的是结合混合生产和多看板循环两种思想，开发一种集成的流程控制方法。这将在全球生产环境中开发国际生产和分销模拟器。将按订单生产和按库存生产两种生产方式结合起来，提出了一种灵活响应动态需求的混合生产方式。自从20世纪80年代初人们认识到准时制（JIT）的重要性以来，许多关于流程控制的研究都集中在看板方法的改进上。然而，这些研究并没有脱离传统JIT系统的框架。在集成系统中，什么样的回路构成最优流？这个问题拓宽了我们的思路。也就是说，从所有下游阶段到所有上游阶段的所有看板循环都被检查过了。这衍生出了嵌套看板循环结构。我们还对不同制造企业的流量控制方法进行了调查和分类。我们开发了准蒙特卡罗模拟方法。这使得大规模集成生产系统的高速、高精度仿真分析成为可能。基于以上结果，在全球生产环境下开发国际生产与分配模拟器成为可能。

Recently, the concept of supply chain management(SCM)has attracted attention for achieving smooth material flows throughout integrated systems of suppliers, manufacturers and venders.The objective of this study was to develop an integrated flow control method by combining two ideas, the hybrid production and the multiple kanban-loops.This would develop the, international production and distribution simulator in global production environments.The hybrid production method is developed to take flexible response to dynamic demands, by linking two production methods, make-to-order and make-to-stock.Ever since the importance of just-in-time(JIT)was recognized in early 1980's, many studies of flow control focused on the improvements of the kanban method.However, these studies were not freed from the framework of the conventional JIT system.What kinds of loops make optimal flows in integrated systems?This question expanded our idea wide from the conventional one.That is, all of the kanban loops from all of the downstream stages to all of the upstream stages has been examined.This derived the nested kanban loop structure.We also investigated and classified the flow control methods in various manufacturing firms.We developed the quasi Monte-Carlo simulation method.This makes high speed and high precision simulation analysis of large-scale integrated production systems possible.As the above results, it became possible to develop the international production and distribution simulator in global production environments.