Research On Key Technologies For Active Collaborative Product Development Platform

As Collaborative Product Development (CPD) expands deeply and broadly, Product knowledge involved in collaboration becomes more and more complex. It constrains further efficiency enhancement of CPD that current Collaborative Product Development Platform (CPDP) haven't integrate product development knowledge management into it's service mechanism.The theory and related method of Active Collaborative Product Development Platform (ACPDP) are studied in this thesis in order to improve product development knowledge management capability. A framework for ACPDP is presented. Based on integrated management of production data in traditional CPDP, this framework focuses on management of product development knowledge. An intelligent collaboration engine has been constructed to integrate multi-domain product models in this framework. At the same time, activity-enabled function modules capable of actively perceiving data change from collaborators and obtaining collaboration strategies from intelligent collaboration engine are built. By applying active rule technology and multi-agent technology, these modules can actively execute collaboration strategies. The main contents of this thesis are arranged as follow:Firstly, relevant theories and models of ACPDP are studied. Basic concepts of ACPDP, and their intrinsic characteristics, functional features, key technologies and functional technology systems are introduced. Secondly, three key aspects of ACPDP, including active process model, active product model and active security model, are discussed in detail.(1) A process model based on activity theory and activity constraint network is proposed. Then activity logic and activity constraint of this process model are described based on oriented-object method and represented uniformly by variable and knowledge-body. A two-level activity model is proposed to improve flexibility of integration among workflow system and application tools.(2) A Linked Multi-domain Intelligent Product Model based on knowledge management proposed in this paper is a resolution to these requirements of active collaboration. In this model, all intelligent product models of each lifecycle phase, every product components, and every domain are connected through product characters and an intelligent model net that can express the product essence is construct. An active collaboration method of product data is proposed and an active collaboration framework of product data is introduced. It provides capability of actively perceiving and executing by utilizing agent technology based on linked multi-domain intelligent model net. (3) A Lifecycle and Role-based Access Control Model (L-RBAC) is introduced in this thesis. Access authorization based on access control rules through product lifecycle is achieved by this model.Finally, based on the above general architecture and related key technologies, a practical prototype system is given as an example. The implementation of the above key technologies in some ACPDP projects are introduced, which testified the advancement and practicability of this thesis's research achievements.