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针对传统田口质量损失函数的一些不足,提出一组改进型田口质量损失函数,并给出了质量特性取值“中靶”和“脱靶”的范围,为文中剔除“脱靶”对策、确定满意区域提供依据;以损失期望作为灰靶模型效果测度的基本工具,在此基础上,提出一系列灰靶效果测度方法;以正交试验设计为基础,针对多质量特性产品参数选择的具体问题,考虑噪声因素的概率分布,构建了基于改进型田口质量损失函数的多质量特性产品参数设计随机灰靶模型,并给出最优对策的判断标准。案例研究表明该模型可以确定相对最优参数水平组合,解决多质量特性产品参数选择问题,该方法新颖清晰、易于操作,可辅助工程设计者进行决策。
Aiming at some shortcomings of the traditional Taguchi quality loss function, a set of improved Taguchi quality loss function is proposed, and the ranges of the quality characteristic values of “target” and “off target” are given. Based on the above results, a series of gray target effect measurement methods are proposed. Based on the orthogonal experimental design, the multi-quality characteristic product parameters Based on the probability distribution of the noise factors, a random ash target model based on the modified Taguchi mass loss function is constructed, and the criterion of the optimal countermeasure is given. Case studies show that the model can determine the relative optimal combination of parameters and solve the problem of multi-quality product parameter selection. The method is novel, easy to operate and can assist engineering designers to make decisions.