Variable sampling interval X control charts with an improved switching rule

被引：45

作者：

Bai, DS ^{[1
]}

Lee, KT ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Ind Engn, Yusung Gu, Taejon 305701, South Korea

来源：

INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS | 2002年 / 76卷 / 02期

关键词：

variable sampling interval; switching rule; runs rule; average time to signal; average number of switches to signal;

D O I：

10.1016/S0925-5273(01)00161-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper proposes variable sampling interval (X) over bar control charts with an improved switching rule which uses a long sampling interval if l(2)(greater than or equal to 2) consecutive sample means fall close to centerline and short interval otherwise. A Markov chain approach is used to derive the formulas for evaluating the average time to signal and the average number of switches to signal. Comparisons between the proposed and existing variable sampling interval (X) over bar control charts indicate that the proposed charts considerably reduce the average number of switches between short and long sampling intervals, while they are comparable with respect to the average time to signal. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：189 / 199

页数：11

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