Distributed Virtual Facto for Strategic Decision Making under e-Business Environment

本研究旨在开发分布式虚拟工厂的基本工具，以支持电子商务环境下的战略决策，并寻求分布式虚拟工厂在人工市场和虚拟企业研究中的有效性。主要研究成果如下：1。(1)为了开发基于分布式仿真技术的大规模制造系统，提出了分布式虚拟工厂的概念。作为构建DVF的基本工具，开发了面向市场上各种仿真语言的通信接口和同步机制，即时间桶方法。(2)通过集成子工厂仿真器，开发制造离散型产品和连续型产品的虚拟工厂。(3)市场上的生产管理系统作为构建的dvf的工厂管理系统来实施。更多的系统一般是通过经验获得的。(4)研究了仿真模型对动态变化的真实制造系统的适应和更新机制，为下一代仿真系统的研究提供了基础。(5)在以往基于时间和数量的系统绩效评价基础上，提出了基于成本的系统绩效评价方法。本研究采用作业成本法（作业成本法），并开发了模型原型系统。(1)本研究构建的DVF在硬件配置和运营策略改进制造系统的各种研究中得到了应用，证明了除了子工厂的局部观点外，从DVF的全局观点来研究系统的重要性和有效性。在整个研究过程中，也经历了基于成本的评估的有用性和有效性，并确认了具有基于成本的评估功能的DVF作为工厂规划和管理战略决策的未来工具的重要性。(2)从复杂经济的角度对人工市场和虚拟企业进行了广泛的研究。这些研究不仅揭示了目标系统的重要见解，而且表明了在供应链管理所需的决策中利用DVF的重要性。少

The research concerns to develop basic tools to construct a distributed virtual factory (DVF) for the support of strategic decision making under e- business environment and to seek the effectiveness of DVF in applying the studies of artificial market and/or virtual enterprise. The major research results are listed as follows:1.Concept and Modeling tools of DVF(1)A distributed virtual factory concept is proposed to develop a large scale manufacturing system based on distributed simulation technology. As basic tools to construct a DVF, communication interfaces for various simulation languages in the market and the synchronization mechanisms, named time bucket methods, are developed.(2)Virtual factories manufacturing discrete type products and continuous type products are developed by integrating simulators of sub-factories.(3)A production management system in the market is implemented as a factory management system of the constructed DVFs. Know-hows for the implementation of management s … More ystems in general are obtained through the experience.(4)Adaptation and updating mechanisms of simulation models to the dynamically varying real manufacturing system is investigated and basic insights for next generation simulation systems are attained.(5)Cost based evaluation of system performance is proposed in addition to the time and quantity based evaluation in the past. Activity based costing (ABC) method is adopted and a prototype system is developed for the models in this research.2.Application and extended studies of DVF for strategic decision making(1)DVFs constructed in the research are utilized in various studies to improve the manufacturing systems in hardware configurations and operational policies, demonstrating the importance and effectiveness to investigate the system from the global view of DVF in addition to the local views of sub-factories. The usefulness and effectiveness of cost based evaluation is also experienced throughout the studies and the importance of a DVF with cost based evaluation function is confirmed as the future tool in strategic decision making in the factory planning and management.(2)Artificial market and virtual enterprises are extensively studied from the viewpoint of the complex economy. The studies not only revealed important insights of the objective systems but also suggested the importance of utilization of DVF in the decision making necessitated in the supply chain management. Less