关键词: 质量功能展开, 工程特性, 竞争优先度, 区间型语义信息, 圆锥破碎机, 产品设计

Abstract: To reflect information vagueness in building process,a determination method for competition priority of ECs was presented based on interval linguistic information.The idea of information theory was introduced to analyze the competitiveness of ECs.An optimization model was set up according to competitive preference values,and Competitive Coefficients(CCs)of ECs was obtained by using Lagrange function to solve the model.A transformation function was utilized to change interval linguistic information into complementary judgment matrix,and the normalized rank aggregation approach was used to get Improvement Rationality Coefficients(IRCs)and Improvement Practical Coefficients(IPCs)of ECs.According to analytic hierarchy process,the relative importance degree of CCs,IRCs and IPCs was obtained,and a computational formula of ECs'competition priority was proposed.An illustrative example of a cone crusher was used to verify the feasibility and effectiveness of the proposed approach.

Key words: quality function deployment, engineering characteristics, competition priority ratings, interval linguistic information, cone crusher, product design