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基于联合控制图的二元过程均值向量与协方差监控 被引量:4

Monitoring the Mean Vector and Covariance Matrix of Bivariate Process Based on the Joint Control Charts
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摘要 提出了一种基于二元过程质量特性标准样本方差(Standardized sample variance,VMAX)和Hotelling统计量的联合控制图,这一控制图用于同时监控二元过程均值向量和协方差的变异。通过平均运行链长(Average Run Length,ARL)的方法对比研究表明,该控制图在过程参数发生小变异的情况下比联合T2与S控制图具有更优的性能。 The article proposes a joint control charts based on the standardized sample variance(VMAX) of bivariate process quality characteristics and Htelling statistics.The chart is used to monitor the mean vector and covariance of a bivariate process simutaneously.The comparative study by average run length(ARL) show that this new charts outperform the combination of the T2 and |S| charts when small changes in the process parameters are considered.
出处 《系统工程》 CSSCI CSCD 北大核心 2012年第4期111-116,共6页 Systems Engineering
基金 国家自然科学基金重点资助项目(70931004) 国家自然科学基金青年项目(70802043) 国家自然科学基金资助项目(71002105)
关键词 标准样本方差 均值向量 协方差矩阵 二元过程 Standardized Sample Variance Mean Vector Covariance Matrix Bivariate Process
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参考文献14

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