基于知识工程的变型设计研究

发布时间：2018-02-16 20:37

本文关键词： 变型设计知识工程自组织钣金冲压模具 UG NX二次开发　出处：《北京邮电大学》2012年硕士论文　论文类型：学位论文

【摘要】：为了加速实现产品的更新换代,研究人员对产品设计及生产工艺的变型设计方法的需求应运而生。随着对人工智能及知识工程的深入研究,已经为人类社会带来了更多的工作便利。机械产品在生产过程中大量的设计经验以及由生产过程中反馈的设计问题所积累的经验知识,对于产品的高效设计和顺利加工起到不可忽略的作用,在人工智能的推动下,使得企业解决产品在设计过程中需要的设计规范及专家经验模糊取值问题成为可能。因此,本文结合自组织理论,提出了基于知识工程的变型设计研究,旨在实现更加智能化的产品变型设计系统。本文通过研究相关领域知识,主要工作内容如下： (1)分析了变型设计在机械产品中的应用,总结了当前已有的变型设计方法,结合自组织理论给出了变型系统与自组织之间的映射关系。 (2)分析了变型设计过程的特点,结合自组织理论提出了适用于变型系统的层次化建模过程； (3)根据产品面对的不同对象进行目的性分类并给出了相应定义,并针对工具产品中的钣金冲压产品进行深入研究,分析了该产品的结构特点,并给出了该类产品的模块划分； (4)构建了钣金冲压产品的知识库、数据库,确定了该类产品变型过程中参数基元,结合自组织理论,改进了现有的CBR推理机制； (5)最后利用UGNX二次开发平台,实现变型设计过程,验证了文中所采用方法的可行性和有效性。
[Abstract]:In order to speed up the upgrading of products, researchers' demand for variant design methods of product design and production process came into being. With the in-depth study of artificial intelligence and knowledge engineering, Has brought more work convenience for human society. Mechanical products in the production of a large number of design experience and from the production of feedback design problems accumulated empirical knowledge, It can not be ignored for the efficient design and smooth processing of the product. With the promotion of artificial intelligence, it is possible for enterprises to solve the problem of fuzzy value estimation of the design specification and expert experience needed in the design process of the product. Based on the theory of self-organization, this paper puts forward the research of variant design based on knowledge engineering, which aims to realize a more intelligent product variant design system. The main contents of this paper are as follows:. In this paper, the application of variant design in mechanical products is analyzed, the existing variant design methods are summarized, and the mapping relationship between variant system and self-organization is given in combination with self-organization theory. 2) the characteristics of the variant design process are analyzed, and the hierarchical modeling process suitable for the variant system is proposed based on the self-organization theory. (3) according to the different objects facing the products, the paper classifies the products purposefully and gives the corresponding definitions, and deeply studies the sheet metal stamping products in the tool products, analyzes the structural characteristics of the products, and gives the module partition of this kind of products. (4) the knowledge base and database of sheet metal stamping products are constructed, and the parameter primitives in the process of modification are determined. Combined with self-organization theory, the existing CBR reasoning mechanism is improved. Finally, the variant design process is realized by using UGNX secondary development platform, which verifies the feasibility and effectiveness of the proposed method.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH122;TP391.72

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