关键词: 协同工作, 网络服务, 协同模型, 任务规划, 加入控制

Abstract: In order to satisfy demands of the designers in different areas and to facilitate the collaborative graphics in Computer Aided Design(CAD) systems, the concept of Web services was introduced and its function for implementing integration of the Internet collaborative graphics CAD systems was analyzed. A model of collaborative design framework of graphics CAD systems using Web services was presented, and a layered collaborative design process model based on priority-controlled method was put forward for the framework, then a centralized-controlled conflict resolving method was proposed. The validity of the collaborative design model was confirmed by citing some successful cases, which had already been put into practice. The structure of the model is founded on Internet and adapts to the features of collaborative task designers who are geography decentralized. In the same time, it improves accuracy of the collaborative task and CAD systems' productivity.

Key words: collaborative work, Web services, cooperative model, task division, access control