关键词: 汽车形态, 三角模糊数, 语言变量, 逼近理想解排序法, 方案评价, 敏感性分析

Abstract: To accurately obtain the evaluation criteria of automobile form design,the initial criteria were collected according to the group of automobile form characteristics and the user and expert questionnaire survey.The low-efficient criteria were deleted by using literature research and credibility evaluation to realize scientific construction of the evaluation criteria system.To solve the problem of complexity and subjectivity in the evaluation of automobile form design alternatives,a fuzzy Technique for Order Preference by Similarity to Ideal Solution(TOPSIS)approach which was integrated triangular fuzzy number,linguistic variables and TOPSIS was proposed to generate the overall performance score for each alternative,and the alternative with the highest score was finally chosen.According to the sensitivity analysis,the influence of criteria weights on the evaluation process was established.Through the evaluation of four BWM automobile form design alternatives,the feasibility of the proposed approach was demonstrated and the optimal performance alternative was obtained.The sensitivity analysis showed that the evaluation process was relatively sensitive to the criteria weights with the best alternative,which were the most important factors in the evaluation process.

Key words: automobile form, triangular fuzzy number, linguistic variables, technique for order preference by similarity to an ideal solution, alternative evaluation, sensitivity analysis