【作者】 尧华勇；

【导师】 张国军； 邵新宇；

【作者基本信息】 华中科技大学 ， 机械电子工程， 2005， 硕士

【摘要】 产品结构是最重要的产品信息之一,是制造信息系统的纽带和桥梁。为了应对当前个性化需求增强、交货期缩短的市场变化,以产品结构建模与管理为基础的产品配置技术逐渐成为研究的热点。本文结合多个汽车制造企业信息化建设的工程项目,研究了基于赋权有向图的产品结构建模与配置技术,并开发了原型系统进行验证。在对产品结构与配置管理进行需求分析的基础上,构建了产品结构管理和配置系统体系结构,讨论了产品结构建模和产品配置相关的若干基础理论。提出了应用赋权有向图进行产品结构建模的方法,用点向量和邻接矩阵表达了该模型的存储结构,讨论了将图形模型转换为存储结构的算法。通过对产品结构赋权有向图中点与弧属性的扩展,实现了对设计信息、工艺信息的表达与管理。讨论了在此基础上进行工艺设计和信息集成的方法。分析了产品配置的意义与主要任务,研究了基于版本、有效性和变量配置的方法,讨论了上述配置方法的具体步骤与算法,并以汽车产品为例进行实际配置。作为上述方法的应用与实现,开发了产品结构管理和配置的软件系统。讨论了产品结构管理的实现算法,在PDM的基础上实现了基于版本、有效性和变量的产品结构配置。最后对本文的工作进行了总结和展望。更多还原

【Abstract】 Product structure is one of the most important product information, and it is the bridge of manufacturing information system. In order to deal with the changing market of increasing demand individuation and saving consignment time, the product configuration based on product structure modeling and management is becoming a research hotspot. This paper studies the product structure modeling and configuration on the basis of weighted digraph according to several projects about automobile manufacturing informationization, and has developed a prototype system to validate it. Firstly, a product structure management and configuration system is presented on the basis of analyzing its demand, and some basic theories are discussed concerning about product structure modeling and product configuration. Secondly, a methodology for product structure modeling on the basis of weighted diagraph is proposed. The storage structure of recommended model is described by node vector and adjacency matrix. The algorithm of transferring the graphic model into the storage structure is put forward. Design information and processing information are described and managed by expanding the attributes of vertices and arcs in the weighted diagraph-based product structure model. Some methods are discussed about the process planning and information integration. Thirdly, the significance and primary tasks of product configuration are discussed, the configuration methods based on version, validity and parameter are proposed, and the implementation procedure and related algorithm are put forward. An example of automobile’s configuration is displayed. Then, a system for product structure management and configuration is developed, the flowchart and realization algorithm for product structure management is presented, and the product structure configuration based on version, validity and parameter is realized. Finally, the summary and further works are given.更多还原