A directional multivariate control chart for monitoring univariate autocorrelated processes

被引：0
|
作者：
Yang, Wenwan [1 ]
Zi, Xuemin [1 ]
Zou, Changliang
机构：
[1] Tianjin Univ Technol & Educ, Tianjin, Peoples R China
来源：
ADVANCED MATERIALS AND PROCESS TECHNOLOGY, PTS 1-3 | 2012年 / 217-219卷
关键词：
statistical process control; autocorrelated; spatial sign test; EWMA;
D O I：
10.4028/www.scientific.net/AMM.217-219.2607
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new nonparametric multivariate control chart, based on a spatial-sign test and integrating the directional information from processes with the exponentially weighted moving average (EWMA) scheme, is developed for monitoring the mean of a univariate autocorrelated process. Simulation studies show that it has robustness in in-control (IC) performance, and it is more sensitive to the small and moderate mean shifts for non-normality underlying process than other existing multivariate chart methods.
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页码：2607 / 2613
页数：7
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