The Key Technologies Of Remote Design Of Mechanical Products Based On Artificial Intelligence Research

Since CAD technology appeared in 1960s, it has been extensively used in all kinds of fields, especially in mechanical fields. Combined with AI technology, CAD became intellectualized. Because the mechanical design uses a lot of experimental knowledge, the conventional method of rule-based reasoning has difficulty in applying to it. In recent years, a new method of case-based reasoning appeared .It stores knowledge with cases and solves the bottleneck of collecting knowledge in the traditional rule-based reasoning system. Case-based reasoning is a new AI technique. When it is applied in design region, case-based design is developed.The network technology, especially Web-relevant technology, has developed rapidly since the end of the 20th century, which brings the economical globalization and the globalization in information and the manufacture. All these put forward a new requirement and provide a new direction to CAD. Traditional CAD software based on the stand-alone or LAN is gradually turned to the Web-based application mode. So the remote design based on Internet emerges as the times require. Remote design is to provide a universal design platform and product components design for users in Internet. Because most programs run at server, the clients' software and hardware require very low and then the investment of capital and technologist is reduced. Remote design will be helpful to the Small and Middle Enterprise to solve the lack of capital and manpower.This paper first analyses the developing direction of CAD system in the era of Internet, and discusses several key technologies of Web-based remote design system, including network technique, three-ply architecture based on B/S, ASP technique and the method to call remote program using ActiveX components which is based on the theory of COM/DCOM. Second, the applications of case-based design in mechanical design field are discussed and many key techniques about case-based design are studied, including case representation, case retrieval, case adaptation and case maintenance. Finally, through combining above relevant technologies, a case-based design prototype system is designed preparatory and a web spot of the reducer remote design is constructed to verify the above theories, In the process of the system designing, we use Windows NT for Operating System, iis5.0 for server and SQL server 2000 for background database, and use visual basic 6.0, visual interDev 6.0 and dreamweaver 4.0 for development tools.