FMS集成设计系统的研究与实践研究.docx

华中理．Y-大学博士学位论文摘 要柔性制造系统(FMS)的设计与和运行优化存在功能问的相关性和信息问的依赖性， 因此本文提出对FMS生命周期中的各个阶段进行集成研究，并围绕FMS集成设计中的关键 技术(集成系统体系结构、集成建模方法、集成规划设计、集成调度与控制)进行了深入的 研究与探讨，在此基础上对FMS集成设计原型系统进行了开发与实践首先沦述了柔性制造系统的实施流程和设计内容，并采用分层规划的方法对FMS设亡f任 务进行r功能分解，将FMS的设计任务分解为机床的设计和选择、系统目d置及布局设计、系 统调度与控制设计、仿真及设汁结果评价等相对独立的子任务，在此基础上分析了对FMS进 行集成设计的必要性提出了以仿真模型为核心、以零件普及其工艺规划为基础的FMS集成 设计系统的体系结构分析了FMS集成设计过程中刘模型的需求，j{：在分析各种现有建模方法的基础上提出了 面向对象的FMS集成化建模方法(OOIM)在OOIM方法中，对象模型是整个集成模型的 核心和主体，而基于IDEF的功能模型和基于Pen网的动态模型是对对象模型的必要补充 00IM方法采用一定的映射机制在上述各_f模型之间进行转换，从而在整体上保持了集成模 型的一致性。

根据FMS集成设计的内容，在宏观上将FMS对象分类为物理对象、信息对象 和决策对象，建立了各类对象的模型框架，从而分别为FMS规划殴计、生产计划和调度控制 设计提供模型支持进一步对上述各类对象模型框架进行了集成，在集成的对象模型框架下， 有关FMS设汁、规划、调度和控制等子问题可以通过一种相互关联、集成和动态的方式加以 研究和解决，从而为FMS集成设计系统的开发奠定了基础提出了FMS集成规划设计的功能模型，以及机床设备选择与布局优化的集成设计策略 在机床设备选择方面，研究了一种简单实用的机床设备选择模型，该模型综合考虑了零件谱 选择、零件加工工艺及其相互关系、机床数据库、用户需求以及FMS系统的布局等基于上 述机床设备选择模型，开发了一种可与FMS布局设计集成的启发式求解算法在机床布局i殳 计方面，论述了现有布局模型和算法解决FMS布局设计问题的片面性，提山对FMS机床布 局进行智能设计深入探讨了智能布局设c_卜中基于知识的布局设计方法以及面向对象的知识 表示和知识库的构成，提出了萌l旬x,j象的布局设计推理机制和基于目标驱动的反向推理策略 研究了FMS布局设计中一维和二维机床布周问题的数学模型，提出了基于图论的启发式求解 算法。

提出了FMS调度与控制的集成设计策略与集成结构，根据00IM方法建立了FMS调度 与控制的CTPN统一模型，提出丁基于该统一模型的FMS调度、控制与仿真模式，在此基础 上进一步论述了FMS调度和控制的集成设汁原理与方法，并开发丁一种基于规则的多目标动 态调度算法FMS动态调度与控制的集成将使部分调度功能溶入系统逻辑控制中，从而使FMS 控制系统具有一定的自调度能力，增强了FMS控制系统的适应性最后简要介缁了 个基于上述集成设计理沦的FMS集成设计原型系统(FMs—R&D) 该系统集FMS规划设计、调度控制及动I嘶仿真为一体，并提供友好的图形用户界面关键词：FMS，集成设计，建模，规划设计，调度，控制，仿真华中理工大学博士学位论文ABSTRACTDue to the functional interrelationship and informational interdependence between the design and operation of flexible manufacturing systems(FMS)，it is necessary to study each phase of FMS lifecycle in an integrated manner．In this dissertation．some key issues for FMS integrated design including the system architecture，modeling methodology，planning design and scheduling／controlling aye thorougtdy studied anddiscussed，and a prototype system for FMS integrated design is briefly introduced．The implementation steps and design task ofFMS are discussed．and the functionaldecomposition of the task is conducted based on hierarchical planning method．FMSdesign call be divided into some independent subtasks．including the machine t001 selection，system configuration and layout，schedule and control design，simulation and evaluation，etc Furthermore，the necessity for integrated design of FMS is analyzed， and the integrated system architecture，mainly consisting of the simulation model，part spectrum，and process plans is proposed．By analyzing the existing modeling methods，all object+oriented integrated modelingmethodology(OO丑Ⅵ)for FMS integrated design is developed．In OOIM,the objectmodel．the IDEFo-based functional model and the Petri net．based dynamic model aye three sub．models．and a mapping mechanisnl is used to perform the transformationamong them．According to the task of integrated design．the objects in FMS areclassified into three types in general，i．e．physical，informational and decisional ones， and the modeling method for each type is investigated accordingly．Being integrated as a unified object．oriented modeling framework，these object models are used for sy’stemplanning,production planing and scheduling／controlling design respectively．More importantly．these sub．problems in FMS design call be soIved in an interdependent， dynamic and integrated manner．This provides necessary models supporting for FMSintegrated design．The functional model for integrated planning design of FMS，and the integrating strategy for machine tool selection and layout design ale proposed．A model for machine tOOI selection is developed．This model takes into account the selection ofpart spectrutTL process plan of part spectrum and their relationship，machine t001 database，user requirements。

and system layout．A heuristic algorithm for machine tool selection,whichcan integrate with FMS layout design is studied．With regard to layout design，an intelligent design method is proposed．The knowledge-based intelligent layout design, together with the object．oriented knowledge expression and the structure of layout knowledge database are studied in detail．and then the object-oriented reasoning mechanism and the goal．driven backward reasoning strategy for the intelligent layout design are presented．The one—dimensional and two．dimensional mathematical models11华中理工大学博士学位论文fof machine tool layout．as well as the heuristic algorithms based on graph theory aredeveloped．Moreover，the integrated design strategy and architecture for FMS scheduling andcontrolling are studied．According to OOIM，a unified Colour Timed Petri Net(CTPN) model for FMS scheduling，controlling and simulating is developed This unified CTPN model can not only describe the scheduling problems in FMS，but also represent the controlling logic and simulation of FMS．Therefore,the integration between FMSscheduling and controlling design can be reached On the basis of the unified CTPNmodel and integrated design strategy mentioned above，the integrated design。