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常规控制图是根据假设检验的原理通过由测量结果得到的图形记录来评估判断测量过程是否处于控制状态的一种图形方法和工具。它能判断并提供测量过程中是否存在异常因素的信息,以便查明产生异常的原因,并采取措施使测量过程重新处于统计控制状态。根据JJF1033-2008《计量标准考核规范》的规定,对于准确度较高且重要的计量标准,如有可能,建议尽量采用控制图的方法对其
The conventional control chart is a graphical method and tool for judging whether a measurement process is in a controlled state or not based on the principle of a hypothesis test by using the graph records obtained from the measurement results. It can determine and provide information on the presence or absence of anomalous factors in the measurement process in order to identify the cause of the anomaly and take steps to bring the measurement process back into statistical control. According to JJF1033-2008 “measurement standards assessment norms”, for more accurate and important measurement standards, if possible, it is recommended that the use of control charts as far as possible its