论文标题:通用的可重构Holonic生产计划与控制系统（GR-HPPCS）研究
Research on General Reconstructable Holonic Production Planning and Control System (GR-HPPCS)
论文作者
论文导师 王宁生,论文学位 博士,论文专业 机械电子工程
论文单位 南京航空航天大学,点击次数 105,论文页数 146页File Size1431K
2006-02-01论文网 http://www.lw23.com/lunwen_965146307/
Agile Manufacturing;Production Planning and Control;Holon;Unified Information Model;Distributed Decision-Making;Dynamic Reactive Scheduling
为了提高企业的竞争能力,力争在新的世纪拥有竞争优势,敏捷制造作为一种新的管理模式正越来越受到制造企业的重视。为此,本文面向敏捷制造环境以离散制造业的生产计划与控制系统为研究对象,在对国内外文献的研究和工程项目实践的基础上,提出了通用的可重构Holonic生产计划与控制系统,并着重对系统框架结构、信息组织、生产计划、生产控制的若干关键技术问题进行了研究。 1.通过分析敏捷制造环境下虚拟企业层、企业层、车间层、单元层等不同层次生产计划决策过程的本质特征,本文提出了通用的可重构Holonic生产计划与控制系统(GR-HPPCS)的框架结构,创建了不仅具有独立性、协作性,而且具有自相似性、柔性的新型生产计划与控制Holarchy,并就此框架结构下Holon的基本功能以及系统运作模式进行了研究。 2.采用基于UML-XML集成的方法对生产计划信息组织的问题进行了研究,即一方面面向用户建立了基于UML图形表示方法的统一信息模型,并辅以面向对象的框架法(frame)对实体作一般性说明;另一方面面向实现提出了采用XML技术对底层数据进行描述,以便实时地进行信息传递,消除传递过程中的信息扭曲现象。 3.针对GR-HPPCS框架下基于协商机制的生产计划分布式决策过程,分别研究了订单优先权、订单/任务分解、订单/任务分配等决策问题,并且针对决策过程中可能出现的冲突提出了基于改进合同网协议的分级协商模型与协商策略,以解决系统运作过程中需要有效解决的问题。 4.提出了订单驱动的生产信息共享和跟踪机制。通过建立一种新的透明信息通道,用户可以在自己的权限内方便、快速地查询和获取自己想要的相关信息,对订单执行进度、执行过程进行实时监控,以保证订单的完成。同时,设计了订单执行进度的计算方法对进度进行判断评价。 5.针对生产过程中订单以及制造资源可能出现的变化,设计了两种动态再调度算法,算法的目标是最小化原始调度集的变更,仅仅对原始调度的部分变化作出了改变,以提高调度的效率,保证调度的质量。 6.对GR-HPPCS的实现进行了研究。基于分布式对象技术,研究了基于CORBA和Web的系统集成框架,结合理论研究,对原型系统进行了开发,为今后进一步的研究提供了一个基础。
This dissertation focuses on the production planning and control system of dispersed enterprises for the agile manufacturing environment and a general reconstructable holonic production planning and control system (GR-HPPCS) is put forward. An extensive study on the system’s crucial technologies is carried out. 1.A general reconstructable holonic production planning and control system frame based on PROSA is proposed, and a new production planning and control holarchy is developed not only with independence and collaboration but also with self-comparability and flexibility. Meanwhile, basic functions of the holons and operation mode of the system are described. 2.Aimed at the problems on how to organize production planning information, an UML-XML integrated modeling method is established, in which an unified information model is constructed based on UML for users and an rough data model is described based on XML for realization. The approach eliminates information distortion. 3.Aimed at the distributed decision-making process of production planning based on negotiation, the problems about priority of orders, order/task decomposition, order/task allocation etc are developed. Moreover, aimed at conflicts which occur in the process, an improved contract net protocol and some negotiation-based strategies are presented. 4.The order-driven information sharing and tracking mechanism is introduced based on a new transparent information channel through which users can rapidly and facilely get related-information to examining production process, and finally a calculating method of order rate of process is designed. 5.Aimed at the changes of orders and manufacturing resources during production process, two kind of dynamic reactive scheduling algorithms are designed, and which only modify part of the originally created schedule for improving the scheduling efficiency. 6.A framework for system integration based CORBA and Web is built and the communication interfaces between holons are discussed.
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