基于产品生命周期的pdm系统.doc

摘 要
经济全球化和信息化的快速发展，使制造业的竞争环境、发展模式以及活动空间发生了深刻的变化。在这种背景下产品生命周期管理(Product Lifecycle Management, PLM)应运而生，它管理产品生命周期中所有与产品相关的数据和过程，是产品数据管理(Product Data Management, PDM)的深化与发展。中小型制造企业在国家发展建设中占有重要地位，本课题从中小型制造企业对PDM系统需求日益紧迫的现状出发，通过研究PDM技术和产品生命周期建模技术，构建了基于产品生命周期的PDM系统的体系结构，开发了一个PDM系统，解决了中小型制造企业产品数据在全生命周期的管理问题。
本课题主要研究内容如下：
(1) 研究了PDM技术、PLM技术和产品生命周期建模技术，通过分析某汽车企业对PDM系统的功能需求，设计了系统的用户权限管理、图文档管理、产品结构与配置管理、工作流管理等功能模块，构建了C/S和B/S混合模式下基于产品生命周期PDM系统的体系结构。
(2) 在分析PDM系统与其它系统信息集成模式的基础上，提出PDM系统与CAD系统、CAPP系统、CAM系统信息集成的具体方案。重点研究了PDM与CAD集成的关键技术，采用封装模式与接口模式相结合的方式实现PDM与CAD双向集成，运用SolidWorks API二次开发技术，设计了一个集成PDM功能的CAD插件，研究出一套自动生成产品结构树的算法。
(3) 基于Visual Studio.Net平台，利用C#编程语言，以SQL Server 2000作为系统数据库，利用面向对象技术，开发了一个基于产品生命周期的PDM系统。将用户和权限通过角色这一桥梁联系在一起，用户通过角色被赋予相应权限，实现了对产品生命周期中人员、数据和过程的严格控制。并针对系统开发所涉及的其它关键技术性问题，如图形文件存储方法、产品结构树节点的添加与删除等，进行了具体的分析，给出了详细的解决方案。

关键词 PLM；PDM；图文档管理；工作流管理；信息集成；产品结构树
Abstract
Economic globalization and the rapid development of information technology change the competitive environment, patterns of development and activity space of manufacturing deeply. In this context, product lifecycle management (PLM) came into being. PLM, managing all product-related data and processes, is the deepening and development of product data management (PDM). Small and medium-sized enterprises occupy an important position in national development and construction. Considering the problems in the process of current small and medium manufacturing enterprises, PDM technology and product life cycle modeling were studied in this paper. The architecture of PDM based on product lifecycle was established. A PDM system being suit for small and medium manufacturing enterprises was developed, which solves the management problem of product data in the whole lifecycle.
The main contents in this paper include:
(1) By studying the concept, architecture and main functions of PDM and product life cycle modeling technology and combining with the actual needs of an automobile company, the functional modules were designed, including user permissions management, drawings and documents management, product structure and configuration management, workflow management. The architecture based on product lifecycle in the C/S and B/S was built.
(2) Based on analyzing PDM system and other systematic information integrated model, the specific programs that PDM integrates CAD, CAPP and CAM systems were advanced. Focusing on the pivotal technology of PDM and CAD integration, encapsulation mode and interface mode were combined with each other to realize the double integration of PDM and CAD. Through using the SolidWorks API secondary development technology, a CAD plugin which integrates PDM functions was designed. An algorithm which can generate product structure tree automatically was studied.
(3) Based on Visual Studio.Net platform, by using C# programming language and choosing SQL Server 2000 as database, Object-oriented technology was applied to develop a PDM system based on product lifecycle. Users and permissions were connected by role. User permissions on resources were restricted by the permission of different users, which realizes the strict administration of people, data and process involved in different product lifecycle stages. Other pivotal technologies related to the system development, such as drawings and documents storage method and the addition and deletion of the nodes of product structure tree, were analyzed in detail to propose the particular solving scheme.

Keywords PLM; PDM; drawings and documents management; workflow management; information integration; product structure tree

目 录
摘 要 I
Abstract II
第1章 绪论 1
1.1 课题背景和意义 1
1.1.1 课题背景 1
1.1.2 课题意义 2
1.2 产品数据管理概述 2
1.2.1 产品数据管理产生的背景及定义 2
1.2.2 产品数据管理的发展现状 3
1.2.3 产品数据管理的发展趋势 4
1.3 产品生命周期管理概述 5
1.3.1 产品生命周期管理的定义和内涵 5
1.3.2 产品生命周期管理的发展现状 6
1.3.3 产品生命周期的发展趋势 8
1.4 研究内容 8
第2章 基于产品全生命周期的PDM概述 10
2.1 PDM的主要内容 10
2.1.1 PDM的主要功能 10
2.1.2 PDM的体系结构 13
2.2 产品生命周期建模 14
2.2.1 产品的分类 14
2.2.2 产品生命周期阶段划分 15
2.2.3 产品生命周期模型主要内容 16
2.2.4 产品生命周期模型的建立 18
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