This paper is about the use of the Statistical Process Control (SPC) to detect problems generated by the variability inside Automatic Process Control (APC). This paper tries to find a successful tool regarding to detect values out of control in automatic system. This kind of tool afford evaluated the control strategy and will be useful for the decision makers. Statistical process control, monitoring no only the quality variables but also, variables in the automatic processes that are controlling the quality. In order to test this tool, it will be tested checking the status of moisture control in a medium density fiberboard (MDF) line, this process, is one of the most important in this type of industry. Furthermore, this useful statistical tool could be use to evaluated the performance of any process inside of an organization to help in the improvement cycles.

中文翻译：

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使用统计过程控制评估中密度纤维板生产线湿度控制的自动过程控制的可变性

本文是关于使用统计过程控制 (SPC) 来检测由自动过程控制 (APC) 内部的可变性产生的问题。本文试图找到一种成功的工具来检测自动化系统中的失控值。这种工具可以评估控制策略，并将对决策者有用。统计过程控制，不仅监视质量变量，而且监视控制质量的自动过程中的变量。为了测试此工具，将测试检查中密度纤维板 (MDF) 生产线中的水分控制状态，此过程是此类行业中最重要的过程之一。此外，