On-line quality control procedures for a random walk model with measurement error
作者:
M.S Srivastava,
W.U Yanhong,
期刊:
Sequential Analysis
(Taylor Available online 1997)
卷期:
Volume 16,
issue 1
页码: 93-105
ISSN:0747-4946
年代: 1997
DOI:10.1080/07474943708836374
出版商: Marcel Dekker, Inc.
关键词: Controllimit;Optimal control parameters;Sampling interval;Squared loss function
数据来源: Taylor
摘要:
An economical on-line quality control procedure is given for cases where measurement error u present.The unobservable quality characteristic procw is assumed to follow a normal random walk.model independent of the measurement error which is white noise. The off-target loss function used is proportional to the squared deviation from the target value.The procw is inspected at regular intervals of m time units and adjusted at the end of a cycle when the process goes out of the control limit d.The limning long-run average cost rate is evaluated.The optimum value of the control parameters,the inspection interval m,and the control limit d are obtained by minimlzlng the long-run average cost rate.When m is small and d is large, explicit expressions for the control parameters are given.
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