关键词: 质量功能配置, 工程特性, 重要度, 质量屋, 洗衣机

Abstract: Determining the Improvement Importance Ratings (IIRs) of Engineering Characteristics (ECs) was a crucial step to construct product planning house of quality. In order to achieve the improvement goals of performances of ECs in an economic and effective way, an integrated methodology for determining the IIRs of ECs based on value evaluations was proposed. In this methodology, according to the competitive performance evaluations of ECs and value evaluations of the products of a company and its competitors, a model to determine the Competitive Importance Ratings (CIRs) of ECs was constructed by using multi-attribute decision method, and this model was resolved by using Lagrange function. Secondly, based on the qualitative and quantitative analyses to achieve the Improvement Target of Performance (ITOP) of each EC, the importance ratings of achieving the ITOPs of ECs were determined. Lastly, based on the combination of the initial importance rating, the CIR, and the importance rating of achieving the ITOP of each EC, the IIRs of ECs were determined by Analytic Hierarchy Process (AHP). A case study of product development of washing machine in a corporation was provided to illustrate the application of the proposed method.

Key words: quality function deployment, engineering characteristics, importance rating, house of quality