Research On Key Technologies Of Multiple Domains Collaborative Product Design For Sharing And Exchange Strategy

The work described in this dissertation is on key technologies, tools and system development of product information sharing model, data consistency management, process interoperability, and multimedia-supported environment is researched comprehensively for multidisciplinary collaborative product design. And research achievements are put into practice combined with high-pressure reciprocating pump design process. The main work described in this dissertation is as follows:Firstly, collaborative product design fundamental concepts, its background and study state at home and abroad are expounded deeply. More aspects review of existing researches is all-around elaborated. The background analysis of the dissertation research is carried out in detail, and the study direction is established. The significance of selection topics and main objectives of the dissertation are clarified, and organizational structure is presented.On multidisciplinary domains product model sharing, a kind of collaborative design approach is put forward based on a sharing product information model. The sharable model as well as its creation and publishing mechanism are established. A sharing collaborative design framework is implemented. A design application sharing mode based on message-driven is realized. Via the extensible event-driven process chain (eEPC) chart, collaborative design process model is built. An interactive control method with double tokens based on design priority and sorting time is presented. Using the Analytic Hierarchy Process (AHP) and finite source queuing systems theory, the operation index of collaborative design system is analyzed and simulated. The design message representation is described by XML.According to dynamic data sharing and distributed consistency management across enterprises domains, a data consistency control and management method is put forward by the Peer-to-Peer (P2P) environment. The design data management model is presented in P2P collaborative environment. In collaborative process, the P2P design group model, dynamic management way of design peers and Peergroup interaction patterns are described. An inconsistency detection approach is introduced. With the help of P2P data updating of design constraints, product data update consistency control is implemented. A data consistency management platform is developed based on JXTA.To meet knowledge sharing, information exchange and conflict resolution under group cooperation, a mutlimeida-supported multidisciplinary collaborative design environment is established. Based on java media framework (JMF), the system operating mode, function hierarchy and network structure are constructed. The structure design, real time media stream and RTCP control method are detailed analyzed about the system development aspects. Functions of server side and browser side are represented. The system role definition and management mechanism are devised on the safety factors, and secure authentication is done. Integration with product data management (PDM) system is fulfilled. The system tests work are implemented in local area network.To process information sharing and interoperability in cross-enterprise cooperation, the Process Specification Language (PSL) ontology is introduced to collaborative design, an interoperability method based on the PSL ontology is put forward. Ontology structure model of design process as well as Ontology Web Language (OWL) specification is built. The mapping hierarchy relationship of design process ontology with the PSL ontology is realized, to gain semantic exchange of design process systems through the PSL reference ontology. A computational method of ontology concepts similarity between design processes is proposed. Via Web services, design services composition and coordination mechanism is accomplished. A reference implementation framework for design process interoperability is represented.On account of multiple domains coupling and cross-enterprise process characteristics of product design, focus on multidisciplinary collaborative product design process, an adaptive service system platform and its integration architecture and service levels composition are devised. Its content ingredients and function hierarchy are described. The main goals and construct missions of the system platform are discussed. The overall structure design and development of the prototype system are achieved. The application verification work is completed, taking a certain type of high-pressure reciprocating pump design for example.