Based On The Heterogeneous Product Information In The Collaborative Design Of Xml-technology Research,

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.