网络化制造平台的产品信息建模方法与应用研究

发布时间：2018-03-25 21:37

本文选题：网络化制造　切入点：网络化模型　出处：《天津大学》2011年博士论文

【摘要】：网络化制造(Networked Manufacturing,NM)技术是将网络技术与制造技术、特别是先进制造技术相结合的所有相关技术和理论的总称,是经济全球化和信息革命时代的必然产物。通过网络化制造平台,可以提供一个支持企业信息共享和工作协作的大环境,以支持企业开展网络化制造的应用。本论文在分析国内外相关研究成果的基础上,重点研究了面向服务的网络化制造平台中一些关键技术问题,研究内容和成果主要体现在以下几方面: 1.研究并构建了适合网络化制造、基于产品数据交换标准(the STandard for the Exchange of Product model data,STEP)的产品模型体系。根据三维产品网络模型的特点,本文结合STEP标准构建了一个面向网络化制造的产品模型体系,从产品在生命周期各个阶段实际需求的角度分析了该体系的各种子模型,研究了基于STEP标准的网络化模型构建方法。 2.研究了三维可视化模型的网络传输方法。考虑到网络化协同设计实时共享的要求,提出了基于流式传输(Stream Transmission)的增量传输(Incremental Transmission)方法。在运用流媒体技术的基础上,对比新旧模型文件,只传输修改过的文件块。实例证明,该方法能够大大减少数据冗余,并提高传输效率。 3.研究并提出了基于最大团(Maximal Cliques, MC)的三维模型特征检索与匹配方法。为了能对三维产品模型进行快速准确的检索,该方法综合运用图论算法和组合优化技术,将较为复杂的属性邻接图简化为合并图,运用模拟退火算法求出不同机械零件的相似度。该方法不但大大提高了计算的效率,也具备了更好的工程实用性。 4.研究了在分布式协同制造环境下基于产品生命周期的智能决策模型构建方法。通过对专家经验或历史案例的分析,提取产品生命周期中起决定性作用的一些因素。在此基础之上建立起层次结构模型,通过计算得到不同候选伙伴的各项能力及综合能力权重表。这样企业就可以根据自身需要,借助一个或多个候选伙伴的优势进行高效率的分布式协同制造。在以上研究成果的基础上,本文以昆山数控科技园数控机床及功能部件配套交易及会展网络交易平台项目为开发背景,以面向服务的架构技术为支撑,实现了原型系统的设计与开发。
[Abstract]:Networked Manufacturing (NM) technology is a general term for all related technologies and theories that combine network technology with manufacturing technology, especially advanced manufacturing technology, and is an inevitable product of the era of economic globalization and information revolution. It can provide a large environment to support enterprise information sharing and work cooperation to support the application of networked manufacturing. Based on the analysis of domestic and foreign related research results, this paper focuses on some key technical issues in the service-oriented networked manufacturing platform. The research contents and results are mainly reflected in the following aspects:. 1. A product model system based on the STandard for the Exchange of Product model data Model (STEP), which is suitable for networked manufacturing, is studied and constructed, according to the characteristics of 3D product network model. In this paper, a product model system for networked manufacturing is constructed based on STEP standard, and various sub-models of the system are analyzed from the point of view of the actual requirements of the product in each stage of the life cycle. The method of constructing network model based on STEP standard is studied. 2. The network transmission method of 3D visualization model is studied. Considering the requirement of real-time sharing in networked collaborative design, an incremental transmission method based on streaming stream is proposed. Compared with the new and old model files, only the modified file blocks are transmitted. The example shows that this method can greatly reduce the data redundancy and improve the transmission efficiency. 3. A 3D model feature retrieval and matching method based on maximum maximum client (MCV) is proposed. In order to retrieve 3D product model quickly and accurately, the method combines graph theory algorithm and combinatorial optimization technique. The complex attribute adjacency graph is simplified to merge graph and simulated annealing algorithm is used to calculate the similarity of different mechanical parts. This method not only greatly improves the efficiency of calculation but also has better engineering practicability. 4. The method of constructing intelligent decision-making model based on product life cycle in distributed collaborative manufacturing environment is studied. Extract some decisive factors in the product life cycle. On the basis of this, build a hierarchical structure model, and calculate the capacity and comprehensive capacity weight table of different candidate partners, so that the enterprise can according to their own needs, Efficient distributed collaborative manufacturing with the advantage of one or more candidate partners. On the basis of the above research results, this paper takes the CNC machine tools and functional parts of Kunshan Science and Technology Park as the development background, and supports the service-oriented architecture technology. The design and development of the prototype system are realized.
【学位授予单位】：天津大学
【学位级别】：博士
【学位授予年份】：2011
【分类号】：TH166

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