Based On Multi-agent Product Cad Graphic Dynamic Information Acquisition And Sharing Of Technology,

With the development of Internet, enterprises melt into the condition of sharing information, which accelerates information flowing. As relatively high information density process of whole product lifecycle, the design process needs to share design information in time. It's a key of shortening product lifecycle. The CAD graphics information generated by CAD systems is the best carrier and core of design information, so how to share CAD graphics information efficiently and in real-time is an important part of sharing design information. There are two issues to be considered: one is real-time requirement, that demands the system can gather CAD graphics information and reconcile conflicts in real time; the other is efficiency, that means the system should provide a facile way in order to easily access product information for participants.This paper presents a possible solution to these problems: A multi-agent based CAD graphics information sharing infrastructure, in which three kinds of agents support almost all work instead of peoples, including information gathering, organization, publishing, conflict resolution and so on. The infrastructure is entirely open and distributed. The following achievements have been received in this paper:1. Dynamically Gathering CAD Graphics InformationEach designer has a Client Agent that monitors its owner's action and sends owner's desires to Gathering Agent, then the Gathering Agent can gather the assembly information and geometry information in real time from STEP files produced by CAD systems.2. Dynamically Organizing CAD Graphics InformationTaking the product structure tree as data structure, which links assembly information and geometry information) the Gathering Agent can automatically converts assembled relationship into hyperlink relationship of VRML files, so the system could implement a strategy of integrated and visualized sharing approach based on the Web-based Visualized Product Structure Tree.3. Comprehending and actualizing AgentGrasping the Agent technology connotation, this paper constructs this three kinds of Agent by using some develop tools and actualizes Agent's communication and negotiation, thus they accomplish to share process.4. Carried Out a Prototype SystemFinally, a prototype system under UG 16 and JADE developing platforms has been carried out. It validates the correctness and feasibility of the solution proposed by this paper.