基于信息加工的机械产品设计过程CAD研究

发布时间：2018-02-11 12:22

本文关键词： 机械产品信息表征信息加工 CAD　出处：《西安建筑科技大学》2011年硕士论文　论文类型：学位论文

【摘要】：在科学技术高速发展的当今时代,产品创新已成为决定企业生存与发展的主要因素,而产品创新重点是设计方法的创新。本文主要是在研究现有设计方法的基础上,依据信息加工原理,以人的认知与理解方式为基点,考察了机械产品演化过程中的心理表征与思维处理形式,结合大脑工作原理、人工智能、计算机处理文本信息、图式信息的过程与特点,将机械产品设计过程视为信息表征与信息处理过程,并据此提出基于信息加工原理的机械产品设计过程CAD原理与框架,同时构建了人机交互的机械产品设计的信息处理系统。根据机械产品设计过程中信息表征形式及信息处理方法不同,将产品设计过程划分为三个阶段,即文本处理、文本与图形转换、图式表征下的性能优化。本文主要利用人工智能、文本分词技术、特征提取、特征降维、灰色关联度算法、编程技术、数据库技术、API技术、基于辅助基准及参数化的设计方法、基于辅助基准的装配方法等知识,以Visual Basic、Solidworks、Access软件为设计平台,在计算机上完成上述三个阶段信息的传递与转换,这也是本文研究的主要内容。本文以上述理论为指导,运用现有商业软件,开发出基于信息加工的机械产品设计CAD系统,并以土方机械及连杆机构为例进行了软件实现,实现了利用人机交互完成机械产品整个过程的设计,表明了该原理与技术的可行性,表明该方法具有较大的优越性,在机械设计领域中有着广泛应用前景。
[Abstract]:In the era of rapid development of science and technology, product innovation has become the main factor that determines the survival and development of enterprises, and the emphasis of product innovation is the innovation of design methods. Based on the principle of information processing and the way of human cognition and understanding, this paper investigates the psychological representation and thinking processing in the evolution of mechanical products, combining with the working principle of brain, artificial intelligence and computer processing of text information. Based on the process and characteristics of schematic information, the process of mechanical product design is regarded as the process of information representation and information processing, and the CAD principle and framework of mechanical product design process based on the principle of information processing are put forward. At the same time, a human-computer interactive information processing system for mechanical product design is constructed. According to the different information representation forms and information processing methods in the process of mechanical product design, the product design process is divided into three stages: text processing, text and graphic transformation. This paper mainly uses artificial intelligence, text segmentation technology, feature extraction, feature reduction, gray correlation algorithm, programming technology, database technology and API technology, based on auxiliary benchmarks and parameterized design methods, Based on the knowledge of assembly method of auxiliary datum, the information transfer and transformation of the above three stages are completed on the computer on the platform of Visual basic Solidworks-access software, which is also the main content of this paper. Under the guidance of the above theory and using the existing commercial software, a mechanical product design CAD system based on information processing is developed in this paper, and the software is implemented by taking earthmoving machinery and connecting rod mechanism as examples. The design of the whole process of mechanical product by man-machine interaction is realized, the feasibility of the principle and technology is demonstrated, and the superiority of this method is proved, which has a wide application prospect in the field of mechanical design.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TP391.72;TH122

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