Research On Management Of Multi-model Collaborative Products Design And Its Key Tchenologies

In the face of the complex and ever-changing market environment, enterprises need to establish sustainable competitive advantage. The core competitiveness of enterprises is composed by these fators: requirement-driven management, constantly innovative products. Integration of those factors need the product design management system based on quick response. With information technology as the foundation, complex and ever-changing market requirement is grasped quickly; the mechanism of flexible process management is built for requirement of multi-model products design. With effective stage-gate system, projects of multi-model products design are choiced and priorities assigned, and product development efficiency of enterprises overall is enhanced through resource management. At the same time, through effective knowledge-sharing and knowledge reuse, the product design cycle, design costs and design innovation are improved in projects management of multi-model products design.Based on concurrent engineering of a large-scale Institute, a number of key technologies have been researched about management of multi-model collaborative products design. They include flexible process modeling for the management of collaborative product design, and stage-gate management and resource management of projects for collaborative product design, and knowledge management of product design based on environment sensation. Models of flexible workflow product design management system (FWPDS) are given.The main study contents are as follows:⑴Management framework of multi-model products collaborative design is proposed, and prototype system is implemented. Combining the sustainability and the models coexist in enterprises (Institute) product design, we study asynchronous, collaboration, knowledge reuse, and portfolio management in multi-model products R & D. On this basis, management framework of multi-model products collaborative design is proposed. The framework contains four levels: product strategy planning; flexible process management for products design; portfolio management of scheduling the resources for project; design knowledge management for knowledge sharing and reuse. Based on SOA framework and workflow engine technology, enterprise deployment, configuration and resource leveling are finished in framework of multi-model products collaborative design. Prototype system of FWPDS is built with good integrating and reusing.⑵The product design algorithm of dynamically change based on Petri net with changeable structure is proposed. Modeling of multi-model products collaborative design process, need to address not only the process expression and performance analysis, but also to address the process adaptation and flexibility. Accordingly, on the basis of expression for process mapping of collaborative product design, and description for flexible process, we discuss parallelism of collaborative design tasks, as well as decomposition and allocation methods of the parallel tasks, and take algorithms of planning, sequencing, and decoupling for design tasks based on the design structure matrix DSM to solve product design issues about the parallel progressive iterative. Aimed at flexibility of multi-model products collaborative design, we expand modeling techniques of flexible process based on Petri net with changeable structure. Conbined dynamic change of products design process, we propose the product design algorithm of dynamically change based on Petri net with changeable structure.⑶The resources scheduled algorithm of multi-model products project management based on the ability scheduling and task appointed is proposed. According to overall performance of enterprises R & D, we analyse issues of choice in the control, distribution of priority, and resources dynamic scheduled in project management for multi-model products design. We take stage-gate management technology based on resource capacity allocation and dynamic scheduling, and take decision-making tree method with option pricing to evaluate projects. We study mode of integrated resource management in project management for multi-model products collaborative design. Main contents of the mode include: the resources allocation management, resources capacity planning and plan management for project resources requirement. According to the concept of ordinal even lose and line even lose, we propose the resources scheduled algorithm of multi-model products project management based on the ability scheduling and task appointed. With increase of the number of projects and tasks, there is a better time performance and optimization results.⑷Knowledge retrieval algorithms of products design for knowledge needs are proposed. For knowledge sharing and reuse in products design process, we describe problems on product design knowledge acquisition and sharing, and study ontology of organization of design knowledge and expression of knowledge in the field. Combining knowledge context, we take description methods of user profile to describe effectively personalized information needs of users (designers). With ART-2 mechanism, multi-level of the design cases are organized, knowledge retrieval algorithms of case-based reasoning are proposed, and practicality and effectiveness are verifid with the application experiment.