A Study on Operating Procedure of Flexible Production Systems

由于全球化的兴起、客户需求的多样化以及世界经济的不稳定，制造业的经营环境面临着一大堆棘手的问题。在这个项目中，认识到灵活性增强的必要性，以应对这些问题，一些操作功能提供了生产系统的灵活性，为给定的生产设施进行了研究。这些功能以软件管理包的形式表示。本项目考虑的生产系统包括柔性制造系统（FMS）作为核心领域，生产线生产系统作为装配厂的常用设备，批量生产系统作为过程工业中经常观察到的设备。所取得的成果在期刊上发表了18篇论文和选定的纸质书籍。它们可分为以下几类。1)加载子系统所涉及的问题：在这一类中，基于K…More公司开发的FMS加载程序。通过对算法的改进，开发出了一个鲁棒灵活的负荷规划系统Shanker。2)调度子系统所涉及的问题：针对与第一类相同的目标，通过对实际企业调度流程的调查，开发了一个灵活有效的工作调度系统。3)集成系统所涉及的问题：在这一类别中，装载和调度功能是集成的，并制定了一些操作程序，实现了生产系统的整体性能。这为分层规划框架提供了一个新的关注点。式中，调度函数应在加载程序规划结果的约束下寻求优化。4)关于灵活性的有效性检验和在商业场景中的定位：通过对柔性相关企业的访谈和问卷调查收集到的信息，对企业期望的灵活性内容进行思考和检验。5)其他贡献：作为一个杂类，讨论了与柔性密切相关的新兴概念，如精益/敏捷生产，并为提高制造绩效提供了新的方向。作为最后的评论，这个项目通过这些结果完成了一定的灵活性增强贡献。少

Business environment of manufacturing industries is in a huge pile of tough problems due to emerging globalisation, recent diversification of customer' needs and instability of world economy. In this project, recognising the necessity of flexibility enhancement to cope with these problems, some operating functions providing flexibility of production systems is investigated for the given production facilities. These functions are represented in terms of the software management packages. Considered production systems in this project include flexible manufacturing systems (FMS) as a kernel domain, line production systems as the popular facilities in assembly factories, batch production systems as often observed devices in process industries. Obtained results were published in terms of 18 papers in journals and selected paper books. These are classified into the following categories.1) Loading sub-system concerned issues : In this category, based on the FMS loading procedure developed by K … More .Shanker, a robust and flexible loading planning system, which enables to respond volatile market, was developed through algorithm improvement.2) Dispatching sub-system concerned issues : Aiming the same objective as the first category, an agile and effective job dispatching system was developed through investigation of dispatching procedures used in actual firms.3) Integrated system concerned issues : In this category, both loading and dispatching functions are integrated and some operation procedures, which actualise overall performance of production systems, were developed. Especially, these provide a new focusing stand point of hierarchical planning framework., where dispatching functions should seek optimisation under the constraint of the planning result of loading procedures.4) On their validity check and positioning in business scene : Based on the information collected through interviewing and questionnaire sending to the flexibility concerned enterprises, contents of flexibility the firms are desiring were considered and examined.5) Other contributions : As a miscellaneous category, emerging concepts such as lean/agile production, which are closely related with flexibility, were discussed and a new direction for improving manufactureing performance was provided.As the final remark, this project accomplished a certain contribution for flexibility enhancement through these outcomes. Less