Control Charts for Process Dispersion Parameter under Contaminated Normal Environments

被引：14

作者：

Ali, Amjid ^{[1
]}

Mahmood, Tahir ^{[1
]}

Nazir, Hafiz Zafar ^{[1
]}

Sana, Iram ^{[1
]}

Akhtar, Noureen ^{[1
]}

Qamar, Sadia ^{[1
]}

Iqbal, Muhammad ^{[1
]}

机构：

[1] Univ Sargodha, Dept Stat, Sargodha, Pakistan

来源：

QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL | 2016年 / 32卷 / 07期

关键词：

contamination; dispersion; influence function; normality; power curves; robustness; statistical process control; standardized variance;

D O I：

10.1002/qre.1950

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Control chartsare important statistical tool used to monitor fluctuations in the process location and dispersion parameters. The issues relating to the appropriate choice of control charts for the effective detection of process variability are addressed, and different control chart structures, such as Shewhart-type, exponentially weighted moving average and cumulative sum are explored under ideal assumption of normality and contaminated normal environments, and hence, those control charts structuresare identified which are more capable to detect aberrant changes in the process dispersion. Copyright (c) 2015 John Wiley & Sons, Ltd.

引用

页码：2481 / 2490

页数：10

共 33 条

[1] On Proper Choice of Variability Control Chart for Normal and Non-normal Processes [J].