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    • 17. 发明授权
    • Evaluation and ranking of manufacturing line non-numeric information
    • 生产线非数字信息的评估和排名
    • US5351202A
    • 1994-09-27
    • US843048
    • 1992-02-27
    • Jerome M. KurtzbergMenachem Levanoni
    • Jerome M. KurtzbergMenachem Levanoni
    • G05B19/418G06F15/46G06F15/20
    • G05B19/41875G05B2219/32187Y02P90/10Y02P90/22
    • An apparatus and method for quantitatively ranking the performance of each attribute contributing to a manufacturing process. Various signals representing the measure (i.e., quality or yield) of a manufacturing run and representing the attributes that contributed to each manufacturing run are recorded. An iterative process is commenced whereby numeric weights are assigned to each attribute. In a first iterative step, the weight of each attribute is determined to be the weighted average of the measure of each manufacturing run to which that attribute contributed. In subsequent iteration steps, a refined weight for each attribute is determined by computing the ratio between the normalized measure and the product of all other weights associated with that manufacturing run. The iterations are continued until the weights determined for each attribute converge or become self consistent. In this manner, the performance of non-numeric or attribute parameters such as operators and tools can be measured and defined in terms of a numeric quantity.
    • 一种用于对贡献于制造过程的每个属性的性能进行定量排序的装置和方法。 记录表示制造运行的测量(即,质量或产量)和表示对每个制造运行有贡献的属性的各种信号。 开始迭代过程,其中数字权重被分配给每个属性。 在第一迭代步骤中,每个属性的权重被确定为该属性所贡献的每个制造运行的度量的加权平均值。 在随后的迭代步骤中,通过计算归一化度量与与该制造运行相关联的所有其他权重的乘积之间的比率来确定每个属性的精简权重。 迭代继续,直到为每个属性确定的权重收敛或变得自相一致。 以这种方式,可以以数字量来衡量和定义诸如操作者和工具的非数字或属性参数的性能。