关键词: 概念设计, 评价体系, 模糊集理论, 多准则决策, 层次分析法

Abstract: A fuzzy multi-criteria decision-making method was proposed to evaluate the concept design candidates. In this method, fuzzy set theory, Analytic Hierarchy Process (AHP) and multi-criteria decision-making theory were used to decrease subjective preferences of decision makers' such as fuzzy and uncertain factors in evaluation process. The evaluation architecture of conceptual design candidates was established firstly based on the analysis of influencing factors on product competitiveness. Then, a mathematical model of the fuzzy multi-criteria decision for conceptual design candidate evaluation was constructed. A fuzzy AHP was proposed to determine the weights of evaluation criteria in which the triangular fuzzy numbers were utilized to substitute the scaling scheme of conventional AHP. Experts' opinions and the risk index of the product development process were also taken into account in the method. Finally, an application example was used to verify effectiveness and feasibility of the proposed method.

Key words: conceptual design, evaluation architecture, fuzzy set theory, multi-criteria decision-making, analytic hierarchy process