基于XML的协同设计中的异构产品信息集成技术研究

【作者】 殷毅；

【导师】 黄洪钟；

【作者基本信息】 大连理工大学 ， 机械电子工程， 2004， 硕士

【摘要】 先进制造技术的发展和市场竞争的需要，使制造业不断呈现出全球化、网络化的发展趋势。因此产品设计过程也不可避免地向跨企业、跨系统、跨行业的方向发展，从而拉开了计算机支持的协同设计研究的热潮。产品信息是设计的载体，随着设计方式的改变，传统设计过程中的产品信息交流与共享的手段已无法满足需要。而Internet虽然为协同产品开发提供了底层网络硬件环境，但是如何实现协同设计中的异构产品信息的交流与共享，提高设计效率，目前还没有行之有效的成熟的方法。而计算机网络技术对设计过程的支持也还处在简单的信息共享、通讯交流这种协同手段的层次上。因此针对产品设计网络化的需要，研究Internet环境下协同设计中的产品信息集成技术具有很大的理论价值和实用意义。本文在综合分析STEP技术、XML技术的基础上，指出了XML在网络化产品信息集成中的作用，研究了XML的Web数据模型，以及利用XML转换STEP文件的原理和方法，同时结合新一代网络技术Web Services，构建了一个基于XML的协同设计网络产品信息集成系统框架。本文的主要研究工作如下： 1)针对基于Internet运作的分布式企业环境下传统的产品信息网上交换与共享所存在的问题，将XML理论及技术引入到产品信息交换与共享研究领域，提出了基于XML的异构产品信息网上交换方法。该方法克服了协同设计环境下平台异构性、系统异构性以及信息异构性的问题，满足了产品信息集成的要求。 2)针对当前WWW环境下的WEB数据模型存在的缺陷，系统地研究了面向产品信息XML描述的WEB数据模型。提出了一种新的数据模型——基于带根连通有向图的数据模型即可扩展对象交换模型XOEM(eXtensive Object Exchange Model)，给出了该模型严格的形式化描述，并将该模型引入到含有XML半结构化数据的WEB分布数据源。 3)提出了STEP标准的EXPRESS语言与XML的映射方法，初步实现了STEP产品数据文档向XML文档的转换，开发了转换器TSX。在此基础上，结合新一代网络技术Web Services，提出了协同设计在线产品信息集成系统的框架，并初步实现了产品信息的异地共享。更多还原

【Abstract】 The requests of advanced manufacture technology and market competition are moving the development of manufacture on the way of globalization and Internet as well as procedure of product design is inevitably developing in the direction crossing enterprises, systems and industries. So the research of the computer supported collaborative design (CSCD) arose and has developed quickly. The evolvement of design methods results in that the traditional ways of design cannot match the exchange and sharing of product information that is the carrier of design. Although Internet supplies the ground network hardware environment for CSCD, there is no effective ripe technology to realize the exchange and sharing of heterogeneous product information in CSCD sufficiently. The supports for design procedure supplied by computer network technology are on the layer just like simple information sharing and communication. So it has very important value both on theory and application to study the product information integration technology for CSCD in the Internet environment. On the basis of analysis of STEP and XML technology, this thesis indicates the function of XML in product information integration in the network. The WEB data model of XML and the principle and technique transforming STEP files into XML are researched in the thesis as well as a CSCD product information system mainframe based on XML is established in virtue of the latest network technology梂eb Services.The main work of this paper lists as follows:1) Aimed at the existing problems of the product information exchange and sharing in the distributed enterprises environment based on Internet, the XML theory and technology are introduced in the domain of product information exchange and sharing. And the network exchange method of heterogeneous product information is also provided that overcomes the heterogeneity of platform, system and information in the CSCD environment and satisfies the request of product information integration.2) In order to resolve the defects of WEB data model in current WWW environment, a WEB data model described with XML is established. It is a new data model based on connected digraph with root, named XEOM (extensive Object Exchange Model). The model is described in strict formalization and introduced in the WEB data source including XML semi-structure data.3) This thesis puts forward the mapping method of transforming EXPRESS language into XML and develops a transformer TSX that elementarily realizes the conversion between STEP product data document and XML document. On this basis, a CSCD network product information integration system mainframe is brought forward to realize the product information sharing in the first step.更多还原