A variable sampling interval Shewhart control chart for monitoring the coefficient of variation in short production runs

被引：44

作者：

Amdouni, Asma ^{[1
]}

Castagliola, Philippe ^{[2
]}

Taleb, Hassen ^{[3
]}

Celano, Giovanni ^{[4
]}

机构：

[1] Univ Tunis, Inst Super Gest, Tunis, Tunisia

[2] Univ Nantes, CNRS, UMR 6004, LS2N, Nantes, France

[3] Univ Carthage, Higher Inst Business & Accounting Bizerte, Tunis, Tunisia

[4] Univ Catania, Catania, Italy

来源：

INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH | 2017年 / 55卷 / 19期

关键词：

Coefficient of variation; variable sampling interval; short production runs; Markov chain; truncated average time to signal; T CONTROL CHARTS; PERCENTAGE POINTS;

D O I：

10.1080/00207543.2017.1285076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Monitoring the coefficient of variation (CV) allows process monitoring to be performed when both the process mean and the standard deviation are not constant but, nevertheless, proportional. Until now, few research papers have investigated the monitoring of the CV in a short production run context. This paper investigates the design and implementation of a Variable Sampling Interval Shewhart control chart to monitor the coefficient of variation in a short production run context. Formulas for the truncated average time to signal are derived and a performance comparison is carried out with a Fixed Sampling Rate Shewhart chart monitoring the CV. An example illustrates the use of this chart on real industrial data.

引用

页码：5521 / 5536

页数：16

共 32 条

[1] Monitoring the coefficient of variation using a variable sample size control chart in short production runs [J].