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Title: Application of Maximum Likelihood Estimation Model in X - MR Control Charts
Authors: Li, Ying
Shi, Yi-min
Wang, Liang
Keywords: Individual and moving range control charts (X -MR charts)
Maximum likelihood estimation (MLE)
Process variance
Step change
Issue Date: 2007
Publisher: Vidyasagar University , Midnapore , West-Bengal , India
Series/Report no.: Journal of Physical Science;Vol 11 [2007]
Abstract: Based on the individual and moving range control charts, the maximum likelihood estimation model is proposed to estimate the time of a step change in process variance. It is manifested by Monte Carlo simulation that the estimator coming from this model approaches the actual time very well. We compare the estimator with the first signal time, and come to the conclusion that the estimator detects the process variation more quickly and exactly. So the proposed change point estimator can be easily implemented to improve production efficiency.
Description: 1-9
ISSN: 0972-8791 (Print)
Appears in Collections:Journal of Physical Sciences Vol.11 [2007]

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