改进的质量功能配置在质量成本优化分析上的应用

在改进型的质量功能配置工具中,增加了质量保证成本和质量损失成本两个主要的评价指标,修正了市场竞争评价指数和技术竞争评价指数,并引入了层次分析法,对定性决策因素给以定量的测度权重.根据质量保证成本与技术重要度的关系,以及质量损失成本对质量需求的影响,提出了适合设计阶段的质量成本优化分析方法.最后的应用结果表明,利用改进型的质量功能配置工具进行质量成本分析是有效的.

Application of improved QFD in the optimization of quality cost

The initial figure of QFD-HOQ(house of quality) had been improved to further study connections among customer's needs,the technical level and quality cost so that quality cost could be optimized in the early design stage.Base on the analysis of applicability for QFD,the improved QFD was proposed to fit the optimization of quality cost,and HOQ(the main tool of QFD) was reconstructed both in contents and format.According to studies mentioned above,factors that effect quality cost were defined and the optimization of quality cost was realized.Two new judgements were proposed in improved QFD,namely quality input and quality output,by which the evaluation of market competition and technical needs were modified.Moreover,a method of AHP was presented to quantify the weight of each factor that influences decision-making.In this paper,an optimized method of quality cost was established according to the relation between quality guarantee cost and technology weightiness as well as the effect of quality failure cost.Eventually,the optimization of quality cost by improved QFD is verified by successful applications.