【作者】 何俊明；

【导师】 赵韩；

【作者基本信息】 合肥工业大学 ， 机械制造及其自动化， 2007， 博士

【摘要】 市场竞争日趋激烈并国际化，制造行业面临着以小批量、多品种和低成本的产品提供优质服务，以最快的响应速度最大限度地满足用户需求的巨大压力。传统的制造资源组织模式已经无法满足现代企业对制造环境变化的可适应性以及对市场变化快捷响应的要求；如何使制造系统模式能够快速、高效和经济地适应市场需求，是对制造企业的一个严峻挑战，本文即在此背景下探讨先进制造系统模式问题。本课题研究从制造资源组织着手，以实现制造系统的敏捷化为目的，发展了基于虚拟生产系统(Virtual production systems，VPSs)的制造系统模式，对与VPSs系统应用相关的关键技术如VPS构建、系统建模、系统控制与系统评价方法进行深入探讨。具体的，本文的主要工作体现在以下五个方面：1、先进制造系统模式的总结与分析：分别从制造资源组织，制造系统建模和制造系统控制调度的角度进行了总结和分析，阐述了相关领域的研究现状和发展趋势，确立了论文的研究方向。2、探讨发展了基于VPSs的制造资源组织模式理论。阐述VPSs的基本思想；制造资源管理的自治体思想；给出基于VPSs的制造资源组织架构和方法体系，面向特定产品构建VPS的一般方法，构建面向特定产品VPS算法。3、在VPSs建模方面，采用改进的高级Petri网建模方法。总结了制造资源建模的需求分析，针对目前制造资源的研究现状建立了制造资源一般模型，在此基础上运用面向对象方法，建立系统的彩色赋时面向对象Petrti网(Colored Timed Object-oriented Petri Nets，CTOPNs)模型。还在模型中加入了时间要素，使得模型可以进行性能分析，并为控制和调度打下基础。针对敏捷环境下系统动态变化的特性，提出了模型的结构变化算法，这使得模型能够容易地根据实际系统的变化而动态地更新而非重建模型。4、在VPSs系统的运行控制方面，针对VPSs系统的特点和需求，借助Agent概念和自治与协调机制，在建模方法的基础上，建立起了基于Agent的VPSs敏捷控制体系架构。对VPS单元控制器，进行详细的分析和设计，建立了其基于CTOPN模型的自适应控制器制。初探了VPS的自适应控制机制和资源冲突消解方法。5、在VPSs系统的分析评价方面，结合VPSs系统模式的特点，提出了基于Delphi方法的VPSs系统的分析评价技术，给出VPSs系统分析评价的原则和方法过程。更多还原

【Abstract】 Due to the competation of international market, manufacturing industry is facing the stress of staifying customers with small batch production and rapid response to dynamic market. Conventional manufacturing systems can’ t meet such requirements of adaptive ability and agility. It is challenge for modern manufacturing sytem mode. This is to say how to suit the market rapidly, effectively and economically. Just under such background, the advanced manufacturing system mode is dissucessed in this dissertation. To get the agility of manufacturing system, an advanced system named Virtual production systems (VPSs) is proposed. Related key support technology such as building, modeling, controlling of VPSs are throughly explored.The important ideas in this dissertation are listed as follows:1. Thorough summary and analysis of advanced manufacturing system mode. Manufacturing resource organization, system modeling, and scheduling and control of manufacturing system are summarized and analyzed. Related research status and developing trends of respective fields are described. These works gave out straightforward directions of this dissertation.2. On the problem of "manufacturing resource organization mode" : An agile manufacturing system organizing method named Virtual production systems (VPSs) is proposed. Basic profile of VPSs, resource agent and the system framework are analysized. Also, the building algorithem of VPS is discussed. Under this advanced manufacturing philosophy, manufacturing resources are chosen by heuristic algorithm and grouped together rapidly to build up a VPS oriented specific product.3. As for modeling of VPSs, an improved advanced Petri nets are used. In this part, requirement analysis of manufacturing syetme modeling is summarized firstly, and then general model of manufacturing resource is set up according to the researching status of resources, and lastly Colored Timed object-oriented Petri Nets (CTOPNs) model of system is built up. Time factor is also integrated to the CTOPNs model, thus performance analysis can be done. This also builds up solid basement for system scheduling and control. Moreover, to handle the dynamic system change under agile manufacturing environment, the structure changing algorithm of model is proposed. Based on this algorithm, the further model can be easily re-configured than build up other new model.4. About the control system, using hybrid control architecture, which is based on multi-agent technology and composed of cell coordination agent, task agent, VPS agent, and manufacturing resource agent, manufacturing system can execute the effective control to multi-site resources to support the rapid response to customer demands. The autonomy and coordination mechanism is applied to coordinating and scheduling the requests from different tasks and resources, which make manufacturing system flexible, adaptive and robust. The communication mechanism among agents is also discussed combined with the CTOPN modeling and realization of agents. Expecially for VPS agent, an adaptive controller is designed.5. As for important item of system theory, the rough framework of systematical analysis and evaluation of VPSs is proposed. The hierarchy evaluation architecture based on Delphi method is presented. Some important indexes, including time, cost, and adaptability are discussed.更多还原