A Study on Evaluation Method of Conceptual Design Scheme of Mechanical System
The evaluation of conceptual design schemes of mechanical products is an essential problem in the process of its conceptual design. At the stage of conceptual design, whether a correct and objective evaluation can be made on these design schemes will ultimately decide a good or bad performance, even its success or failure. The evaluation of conceptual design is a semi-structural decision-making that includes qualitative indexes and quantitative indexes, so it is difficult to select the best design concepts from a number of schemes. Therefore, an evaluation model based on the engineering fuzzy set theory is developed in this paper. First, the paper makes a detailed hierarchy analysis of evaluation indexes system and constructs some evaluation units according to evaluation indexes system. The whole evaluation of schemes is translated into a series of evaluation of basic units or comprehensive cells. Second, a multi-pole fuzzy pattern recognition model based on the engineering fuzzy set theory is established and the relative membership degree matrix can be obtained by the model, the matrix shows the order of excellence. An example is given for demonstration of its application. It shows that the method is feasible and reasonable.
scheme evaluation conceptual design engineering fuzzy set theory fuzzy pattern recognition
MIAO Hongbin
Department of Mechanical Engineering, Tongji University, Shanghai 200092;School of Mechanical Engineering, North University of China, TaiYuan 030051
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）