【作者】 吴志成；

【导师】 薛善良； 左敦稳；

【作者基本信息】 南京航空航天大学 ， 机械制造及其自动化， 2009， 硕士

【摘要】 产品数据管理(简称PDM,Product Data Management)管理所有与产品相关的信息和过程,可为实现设计重用、提高设计效率提供良好的数据集成环境,是实现产品快速设计的重要支撑。结合我国某船舶传动装置设计单位研制需要,本文对船舶领域PDM应用以及设计重用技术开展研究,设计并开发实现基于Web的面向设计重用的船舶传动装置数据库系统,实现了PDM的部分功能需求。本文完成的主要工作如下:1.针对该单位的应用需求,基于J2EE技术构建了船舶传动装置数据库系统总体体系结构,并对系统业务进行建模,完成了系统的数据库设计。2.以产品-部套-零件为产品数据对象,分析了船舶传动装置的零件信息模型;分析了船舶传动装置的产品结构模型,应用树结构来描述产品结构,形成产品结构树;以物理文件(包括图纸和技术资料)为文件关系管理的数据对象,分析了船舶传动装置的文件关系模型,通过电子仓库来建立元数据和物理文件之间的联系,采用数据表的外键实现产品结构树各节点和其关联文件之间的链接,以便查询预览和文件管理。3.在数据库系统平台上,建立了面向设计重用的零部件库;应用实例推理技术和相似度计算,实现了对可重用的零部件的智能推理查询。4.研究了数据库系统的开发环境和开发实现技术,详细讨论了基于Web的图纸浏览和动态树的生成等关键技术,介绍了数据库系统所实现的关键功能模块,验证了本文所研究的成果。更多还原

【Abstract】 Product Data Management (PDM) manages all product-related information and process. Functioning as a good environment for data integration for reusing design and improving design, PDM is an important foundation to achieve rapid product design. In this paper, the application of PDM and design reuse technologies in the ships field is discussed on and a database system about ship gearing is designed and developed to meet application requirements for design reuse on Web. The database system about shipping gearing developed functions as a PDM system.The major work of this paper completed is as follows:1. Based on application requirements analysis, a frame of the database system about ship gearing is built up on the J2EE technology platform. Then business models of the system are completed and the database is designed.2. Part information model is analyzed to express information of the product, installation and part. Product structure model of the ship’s gearing is also analyzed, using the tree structure to express the product structure. The model of relationship between the documents and parts is analyzed. The relationship of the metadata and physical file is established by data vault. The foreign key of database table is used to make logical links between product tree nodes and document related, which makes the documents query and operation convenient.3. On the database system platform, a part library is established for the design reuse. By use of Case-based Reasoning(CBR) and the similarity computing, reusable parts can be find out with artificial intelligence.4. The database system development environment is introduced, and the key technology of the system development is detailed, such as Web-based view of the drawings, and the achievement of dynamic-tree generation. Some function models are also illustrated to testify the technologies in this paper.更多还原