A Self-Starting Control Chart for Linear Profiles
A Self-Starting Control Chart for Linear Profiles
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DOI：
10.1080/00224065.2007.11917702
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发表时间：
2007-10
影响因子：
2.5
通讯作者：
Changliang Zou;Chunguang Zhou;Zhaojun Wang;F. Tsung
中科院分区：
文献类型：
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作者：
Changliang Zou;Chunguang Zhou;Zhaojun Wang;F. Tsung
在工艺参数标称值未知的情况下，提出了一种基于递归残差的自启动控制图。该图表可以检测截距、斜率或标准差的移位。由于图统计的良好特性，所提出的图表可以很容易地设计成匹配任何期望的控制平均运行长度。模拟结果表明，当工艺参数未知时，我们的方法在一系列可能的移位范围内具有良好的制图性能，并且在工艺的启动阶段特别有用。
A self-starting control chart based on recursive residuals is proposed for monitoring linear profiles when the nominal values of the process parameters are unknown. This chart can detect a shift in the intercept, the slope, or the standard deviation. Because of the good properties of the plot statistics, the proposed chart can be easily designed to match any desired in-control average run length. Simulated results show that our approach has good charting performance across a range of possible shifts when the process parameters are unknown and that it is particularly useful during the start-up stage of a process.