本文件介绍了控制图方法的关键要素和原理，并确定了各种各样的控制图（包括与休哈特控制图相关的控制图、强调过程验收或在线过程调整的控制图，以及专门的控制图）。 它概述了控制图的基本原理和概念，并说明了各种控制图方法之间的关系，以帮助在特定情况下选择ISO 7870中最合适的部分。它没有规定使用控制图的统计控制方法。ISO 7870的相关部分规定了这些方法。

This document presents key elements and the philosophy of the control chart approach, and identifies a wide variety of control charts (including those related to the Shewhart control chart, those stressing process acceptance or online process adjustment, and specialized control charts). It presents an overview of the basic principles and concepts of control charts and illustrates the relationship among various control chart approaches to aid in the selection of the most appropriate part of ISO 7870 for given circumstances. It does not specify statistical control methods using control charts. These methods are specified in the relevant parts of ISO 7870.