Collaborative Assembly In The Late-join The Research And Implementation

Computer Supported Cooperative Work(CSCW) means that a group of users in different places communicate and cooperate to complete one corporate task by the support of computer network. This system involves the study of group work manner and the correlated technology of supported group work, the exploitive strategy of application system etc. By founding the environment of cooperative work, it can improve people's intercourse manner of information, avoid or reduce the obstacle of space time, accordingly saving working people's time and vigor, improve the group's working quality and efficiency.In recent years, the high-speed development of internet has offered more wide space for the application of CSCW technology. Now in industrial production designing and manufacturing, cooperative authoring system and workflow management system and videoconferencing system have already developed the research of CSCW technology and internet technical combination application, and have founded some CSCW systems based on Web.When we are developing a real-time collaborative system, three requirements of real-time, distribution and unconstraint are to be fulfilled.Because of the concurrent operations from the users and the transmission latency of the network, some concurrent problems take place during the collaborative work. Then how to examine and coordinate the multi-users operating in a same time has been the problem's nut.Firstly, some researches based on the researches of the real-time collaborative system currently are analyzed. At the same time, solve the problem that because of multi-users join in the system in different time by the late-join discussed in the real-time collaborative assembly system. In this article, a series of late-join algorithms which are the same with the real-time collaborative assembly system are stated out. The algorithms can be used to manage, deposited and send the order information, for resolving some concurrent problems in the real-time collaborative assembly system. So our contributions are:During the cause of the collaborative design, if a site joins the system late, or a site disconnect from the system abnormally and rejoins in, concurrent problems will also...