Research On Computer Aided Conceptual Design Based On FES Process

Design activity is one of key points in the products development procedure, while conceptual design is most important in design activity. This is because the basic features and mainframe of products are determined in the conceptual design phase, and the tasks of follow-up steps are only to substantiate and embody these design concepts. With the severe competition of products in 21^st century, traditional design methods and procedures cannot meet well the demands of modern products development, this trend leads to the combination of modern engineering design with conceptual design theory and artificial intelligence techniques.This paper focuses on common methods and principles of conceptual design automatic-systems, including expansion of general function, matching method of verb-noun, mapping method from effects to solutions based on physical parameters, versions management of solutions based on design catalog. Finally, introduce the establishment of intelligence support conceptual design system.The paper consists of six chapters. The first one is the introduction, which analyzes the current situation and trend in conceptual design, knowledge management, sets forth the meaning, aim of present work, and the structure of this paper. The second one introduces the proper procedure of general function according to the characters of function expression model, studies the matching method of verb-noun which help to achieve auto-expansion of general function. The third chapter analyzes the F-E-S design process, pick up physical parameters as the bridge from effects region to solutions region, and set up effects repository, and work out the searching method by physical parameters. The fourth chapter studies principle solutions characters based on design catalog. Set the version management model, which is centralized management and decentralized management, construct the index and data region of version in DBMS, and work out the arithmetic of version manipulation. The fifth one introduces computer-aided conceptual design prototype system, including the global structure of prototype system, every functional module, operation interface etc. And the sixth one is the conclusion of the whole paper, at the same time gives suggestions for the future.