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引言 在质量管理中,应用“田口方法”的目的是:尽量使质量特性接近目标值且变异小。《质量管理》1993 No,10上介绍的MSE控制图充分体现了这种思想。控制图在现场使用,越简单越好。MSE图将控制平均水平和波动大小的两个统计量不交叉地画在同一张图上,这较之传统的x-R图要用两张图已作了一定简化。现在我们提出的半圆控制图更加简单,在一张图上用一个统计量同时控制均值与方差。此图既融合了“田口方法”的哲理,又便于使用,且易于解释和为实际工作者所理解。
Introduction In quality management, the purpose of applying the “Taguchi method” is to try to bring the quality characteristics close to the target value with a small variation. The MSE control chart presented in Quality Management 1993 No, 10 fully embodies this notion. Control chart used in the field, the simpler the better. The MSE graph draws the two statistics that control the average and the magnitude of the fluctuations across the same graph, simplifying the use of two graphs over the traditional x-R graph. Now we propose semicircle control chart is more simple, with a statistic on a map to control both mean and variance. This diagram not only integrates the philosophy of “Taguchi method”, but also is easy to use, easy to explain and understand for practical workers.