Cumulative count of conforming chart with variable sampling intervals

被引:26
作者
Liu, JY [1 ]
Xie, M
Goh, TN
Liu, QH
Yang, ZH
机构
[1] Natl Univ Singapore, Dept Ind & Syst Engn, Singapore 119260, Singapore
[2] Beijing Univ Technol, Coll Appl Sci, Beijing 100022, Peoples R China
关键词
control chart; variable sampling interval; CCC chart; average time to signal; average run length;
D O I
10.1016/j.ijpe.2005.01.006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The control chart with cumulative count of conforming (CCC) items has shown to be useful for process monitoring in automated and discrete manufacturing. It does not require a fixed sample size and can be useful for one-at-a-time data. The current research relies on data from the fixed sampling interval (FSI) scheme. In this paper, we investigate the use of the CCC chart when the variable sampling interval scheme is used. The average time to signal (ATS) is calculated, and its efficiency is compared with that of FSI CCC chart. The use of variable sampling interval scheme may further enhance the cost effectiveness of control chart implementation from a practical point of view. (c) 2005 Published by Elsevier B.V.
引用
收藏
页码:286 / 297
页数:12
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