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一、概述统计过程控制理论(statistical process control,SPC)是由美国贝尔电话实验室休哈特博士于1924年首创的,并提出了实现预防原则的监控工具——控制图。2001年,我国修订后的国家标准GB/T4091-2001《常规控制图》开始实施。常规控制图又称SPC控制图,具有提前预警的作用,可以在产品质量发生异常前捕捉到异常信息,提前采取措施,保证产品质量的稳定性。润滑油灌装过程中,为确保灌装净含量符合
I. INTRODUCTION Statistical statistical control (SPC) was pioneered in 1924 by Dr. Hugh Hart of the Bell Telephone Laboratory in the United States, and proposed a control chart - the control chart - that implements the precautionary principle. In 2001, China’s revised national standard GB / T4091-2001 “conventional control chart” began to be implemented. Conventional control charts, also known as SPC control charts, have the effect of early warning and can catch abnormal information before product quality abnormalities and take measures in advance to ensure the stability of product quality. Lubricant filling process, in order to ensure that the net content of filling compliance