基于产品基因的机械产品设计与成本估算

发布时间：2018-03-30 23:30

本文选题：智能设计　切入点：产品基因　出处：《燕山大学》2016年硕士论文

【摘要】：智能设计是提高产品设计自动化与智能化水平的有效途径,也是实现大规模定制生产、敏捷制造与智能制造的关键技术之一。基于实例的设计方法(CBD)是智能设计的重要方法,旨在利用已有产品来设计新产品,但由于机械产品结构的多样性与复杂性,此方法存在相似实例搜索与适应性修改困难的问题,同时,在产品设计阶段也难以进行成本估算。本文以产品基因为切入点,描述复杂产品的结构属性和制造属性,从而建立复杂产品智能设计与成本估算体系结构。本文内容通过以下几方面展开:首先,在分析CBD方法局限性和并行成本估算存在问题的基础上,提出面向产品智能设计与成本估算的产品基因参数,并将其分为产品部件的结构参数和制造参数两个部分,利用面向对象的方法对基因参数进行表示,在此基础上,建立面向复杂产品智能设计与成本估算的体系结构;然后,利用神经网络的方法建立产品功能参数与基因参数、基因参数与零件参数之间的映射模型,将基因参数中的结构属性作为实例搜索的依据,采用加权欧式距离的方法描述产品之间的相似性,实现相似实例的搜索;通过基因参数与零件参数的映射模型对相似实例进行适应性修改,给出相应的修改建议;其次,在分析产品成本构成的基础上,利用神经网络的方法建立产品基因参数与成本之间的映射模型,从而在设计阶段并行估算成本。最后,本文以Visual Basic为系统开发工具,以Access为服务器端数据库,建立板链式提升机智能设计与成本估算原型系统,实现了基于实例的提升机设计和成本估算的自动化和智能化。
[Abstract]:Intelligent design is an effective way to improve the level of automation and intelligence of product design, and it is also one of the key technologies of mass customization, agile manufacturing and intelligent manufacturing. CBD is an important method of intelligent design. The purpose of this method is to make use of the existing products to design new products. However, due to the diversity and complexity of mechanical products, this method is difficult to search for similar examples and adapt to modify, at the same time, It is also difficult to estimate the cost in the stage of product design. In this paper, the structural and manufacturing attributes of complex products are described by using product genes as the starting point. In this paper, the intelligent design and cost estimation architecture of complex products are established. Firstly, based on the analysis of the limitations of CBD method and the problems in parallel cost estimation, The product genetic parameters oriented to product intelligent design and cost estimation are proposed, and they are divided into two parts: structural parameters and manufacturing parameters of product components. The genetic parameters are represented by object-oriented method. The architecture for intelligent design and cost estimation of complex products is established, and then the mapping model between product function parameter and gene parameter, gene parameter and part parameter is established by using neural network. The structural attributes of gene parameters are taken as the basis of case search, and the similarity between products is described by weighted Euclidean distance to realize the search of similar cases. According to the mapping model of gene parameters and parts parameters, the adaptive modification of similar examples is carried out, and the corresponding modification suggestions are given. Secondly, based on the analysis of product cost composition, The mapping model between product genetic parameters and cost is established by using neural network method, so that the cost can be estimated in parallel in the design phase. Finally, this paper takes Visual Basic as the system development tool and Access as the server database. A prototype system for intelligent design and cost estimation of plate chain hoist is established to realize the automation and intellectualization of the design and cost estimation of hoist based on example.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH122

【相似文献】