关键词: 质量功能展开, 质量屋, 设计方案选择, 模糊决策

Abstract: Some conventional methodological problems of design schemes selection for parts in Quality Function Deployment (QFD) are discussed. A new evaluation approach of optional design schemes with the performance characteristics as evaluation criterions is presented, and the performance characteristics value of design scheme can be determined by fuzzy decision theory. Furthermore by introducing new concepts of the performance function and performance degree of parts, a design scheme selection program model for parts is proposed based on the first 2 stages of QFD (namely product planning and parts configuration).The simulation result shows that the proposed model can help design team take account into the effects of correlation matrix in House of Quality(HoQ), enterprises resources and competitors on design scheme selection, and identify a design scheme for the new/improved product more scientifically and effectively.

Key words: QFD, HoQ, design scheme selection, fuzzy decision