产品协同开发中图形浏览与批注技术的研究-计算机应用技术专业论文.docxVIP

万方数据 万方数据 摘 要 计算机支持的协同设计(CSCD)已成为当前信息技术领域的研究热点。 针对产品协同开发中的数据异构性、需求多样性和过程反复性等特点，本文 深入研究了产品协同设计系统中的图形浏览与批注技术。 首先，在协同设计概念模型的基础上，介绍了协同设计系统中的关键技 术，建立了系统平台的应用环境模型，设计了协同设计系统的层次结构。 其次，针对协同开发中产品浏览的不同的需求层次，以特征核结构为基 础，设计了产品集成模型的层次结构。引入中性特征操作概念，提出了基于 特征操作的模型转换方案。以产品模型的快速显示为目标，提出了基于信息 分解的产品模型轻量化显示方案。 然后，通过分析协同批注流程，设计了基于任务管理协作理论的异步协 同批注模式。在此基础上，结合资源优化理论，建立了协同批注成员抽象模 型，并提出了基于资源优化理论的协同批注任务的两级分解方法和双向选择 优先的调度策略。以共享模型为基础，采用扩展的事件驱动过程链(eEPC) 建模方法，建立了协同批注的过程模型。 最后，在协同设计系统平台的基础上，采用ObjectARX技术和MFC技术 直接访问AutoCAD图形数据库，设计与实现了占据二维工程图主流地位的 DWG文件的浏览与批注功能，并展示了协同系统平台基本功能的运行实例。 关键词 协同设计；浏览；协同批注；特征；DWG 文件 Abstract Computer Supported Collaborative Design (CSCD) has become the current hot research in the field of information technology. This paper studies browsing and annotating technology in the process of product collaborative design, which focus on the trait of data heterogeneity, need variety and process repetition. First of all, based on the concept model of CSCD, the paper introduces key technique of CSCD system, sets up the application environment model of system platform and designs the hierarchy of CSCD system. Secondly, focus on different levels of demand in the co-browsing for products, product integration model hierarchical structure is designed based on feature core structure. Introducing the neutral feature operation, this text puts forward to the program of model transformation based on feature operation. For displaying quickly of the product model, the program of lightweight display for the product model in the basis of information decomposition is proposed. Then, by analyzing the process of co-annotating, the text designs asynchronous co-annotating mode based on collaborative theory of task management.Based on that, the abstract model of collaborative annotating members is set up, also the method of two-level decomposition and double selection priority scheduling policy for the co-annotatng task which based on resource optimizing are proposed.In the basis of shared model, the use