Capp Expert Systems Research And Development

Artifical Intelligence (AI) is one of the leading subjects in the present development of science and technology.As an important branch of AI,the research on Expert System (ES)is especially active.In order to solve the problem of low intelligence in process designing and difficulty in modifying the processes of platform-CAPP system(KaiMu CAPP system) ,this paper puts forward a new method in studying and developing CAPP by mixed programming in the ES tool CLIPS and the advanced computer language VC++.The paper explores the AI theories of developing the CAPP expert system,and fixes on the knowledge representation method of production rules,and the new thought of developing the knowledge base and the inference engine in the ES tool CLIPS,and introduces the theoretical knowledge of CLIPS.The pape builds up the knowledge base about the process knowledge ,invents the inference engine by the theories of control strategy of forward reasoning and Rete Pattern Matching Algorithm ,with the result of improving the reliability of knowledge,the quality of inference and the efficiency of the searching.Using the dynamic interface mechanism and the compiled DLL ,the paper embeds the CLIPS program into the VC++ environment and carries out the mixed programming so as to achieve the data communication between the VC++ and CLIPS.The paper explores independent process graphics system using VC++.With the build of LINE class ,POLYGON class,CIRCLE class ,ARC class ,TEXT class ,realizes the drawing of basic graph,the selecting of graph properties, controlling and the serializing of the drawing .The paper uses method of the description of the feature to describe the information of geometry and manufacturing according the idea of Feature Modeling.The computer can create automatically the producing link file of the feature .Using the information of the file ,the computer can order the process,select the producing remains and calculate automatically theprocess dimension.The paper has solved the problem about the mixed programming of VC++ and CLIPS,the creating of graph system of CAPP,the calculating automatically of axial dimension.