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分析了常规控制图在精密制造过程质量的统计控制中的不足,讨论了应用对过程均值小偏移比较敏感的累积和控制图,实现精密制造过程输出质量的统计过程控制的基本原理,并给出了累积和控制图(Cusum)的SAS实现步骤。
This paper analyzes the deficiency of the conventional control charts in the statistical control of the precision manufacturing process quality, discusses the application of the cumulative control chart which is more sensitive to the small mean shift of the process, and realizes the statistical process control of the output quality of the precision manufacturing process Out of Cusum’s SAS implementation steps.