This document discusses statistical process control (SPC) concepts and charts. It begins with an outline of SPC course topics, including basic SPC terminology, when to implement SPC in a process, and how to calculate control limits. It then discusses process capability analysis, managing SPC charts, alarms, and the relationship between real-time and offline SPC. The document provides SPC chart examples and considerations for their proper design and use. It also addresses common issues with control chart rules and how to design an effective SPC system user interface.
This document discusses statistical process control (SPC) concepts and charts. It begins with an outline of SPC course topics, including basic SPC terminology, when to implement SPC in a process, and how to calculate control limits. It then discusses process capability analysis, managing SPC charts, alarms, and the relationship between real-time and offline SPC. The document provides SPC chart examples and considerations for their proper design and use. It also addresses common issues with control chart rules and how to design an effective SPC system user interface.
24. 七、管制圖 Control Chart
1924年由蕭華特(W. A. Shewhart)提出。
一種品質圖解記錄。
包含中心線(Center Line)及上下管制界限。
(Upper Control Limit ; Lower Control Limit)
超出管制界限或出現特殊圖樣,則判定為異常;反之,
則稱為穩定狀態。