On the properties of the hotelling's T2 control chart with variable sampling intervals

被引：26
|
作者：
Faraz, Alireza [1 ]
Chalaki, Kamyar [2 ]
Moghadam, M. B. [3 ]
机构：
[1] Islamic Azad Univ, Sch Engn, Dept Ind Engn, Masjed Soleiman Branch, Khuzestan, Iran
[2] Islamic Azad Univ, Urmia Branch, Sch Math Sci, Orumiyeh, Iran
[3] Allameh Tabatabaee Univ, Fac Econ, Dept Stat, Tehran, Iran
来源：
QUALITY & QUANTITY | 2011年 / 45卷 / 03期
关键词：
Markov chain process; Multivariate T-2 control chart; Multivariate quality control; Variable sampling plan; QUALITY-CONTROL; MULTIVARIATE;
D O I：
10.1007/s11135-010-9314-z
中图分类号：
C [社会科学总论];
学科分类号：
03 ; 0303 ;
摘要：
When T (2) control chart is used to monitor a process, it is usually assumed that the samples of size n (0) is taken at constant intervals t (0) . In this paper, we investigate the T (2) control chart for monitoring the process mean vector when the sampling intervals are variable. Recent studies have shown that the variable sampling interval (VSI) scheme helps practitioners detect process shifts more quickly than the classical scheme Fixed Ratio Sampling (FRS). In this paper, it is assumed that the length of time the process remains in control is exponentially distributed.
引用
收藏
页码：579 / 586
页数：8
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