Journal ArticleDOI
Combined Variable Sample Size, Sampling Interval, and Double Sampling (CVSSIDS) Adaptive Control Charts
TLDR
In this paper, an adaptive chart which combines variable sample sizes, sampling intervals, and double sampling features called CVSSIDS control chart is proposed, which uses three different sample sizes and two different sampling intervals.Abstract:
In this article, an adaptive chart which combines variable sample sizes, sampling intervals, and double sampling features called CVSSIDS control chart is proposed, which uses three different sample sizes, two different sampling intervals, two warning limits, and two different control limits. To evaluate the efficiency of the proposed scheme versus different schemes, average time to signal, average number of samples to signal and average number of observations to signal are utilized. In addition, the minimum ATS values of the proposed chart are computed. Finally, the proposed chart is compared to standard Shewhart (SS) chart and several adaptive control charts.read more
Citations
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Journal ArticleDOI
A variable sample size and sampling interval control chart for monitoring the process mean using auxiliary information
TL;DR: The proposed VSSI AI chart shows a better performance than the EWMA, EWMA AI and Syn AI charts, in terms of the ATS and EATS criteria.
Journal ArticleDOI
The variable sampling interval run sum X control chart
TL;DR: The VSI run sum (RS) X ?
Journal ArticleDOI
An adaptive approach to EWMA dispersion chart using Huber and Tukey functions
TL;DR: In this paper, an adaptive EWMA for dispersion parameter in connection with Huber and Tukey's bisquare functions is proposed. And the performance measures used in this study include average run length, extra quadratic loss, relative average run lengths, and performance-comparison index.
Journal ArticleDOI
A side-sensitive synthetic chart combined with a VSS X̄ chart
TL;DR: The SSVSS X?
Journal ArticleDOI
A side-sensitive modified group runs double sampling (SSMGRDS) control chart for detecting mean shifts
TL;DR: A side-sensitive modified group runs double sampling (SSMGRDS) chart for detecting mean shifts is proposed and outperforms all charts under comparison, for all sizes of mean shifts.
References
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Journal Article
Exponentially weighted moving average control schemes: Properties and enhancements
TL;DR: The recognition that an EWMA control scheme can be represented as a Markov chain allows its properties to be evaluated more easily and completely than has previously been done.
Journal ArticleDOI
Exponentially weighted moving average control schemes: properties and enhancements
James M. Lucas,Michael S. Saccucci,Robert V. Baxley,William H. Woodall,Hazem D. Maragh,Fedrick W. Faltin,Gerald J. Hahn,William T. Tucker,J. Stuart Hunter,John F. MacGregor,Thomas J. Harris +10 more
TL;DR: In this article, the authors evaluate the properties of an exponentially weighted moving average (EWMA) control scheme used to monitor the mean of a normally distributed process that may experience shifts away from the target value.
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X charts with variable sampling intervals
TL;DR: The variable sampling interval (VSI) chart as discussed by the authors uses a short sampling interval if the sample is close to but not actually outside the control limits, and a long sampling interval for the sample if it is closer to target.
Journal ArticleDOI
Combined Shewhart-CUSUM Quality Control Schemes
TL;DR: The SheWhart-CUSUM quality control scheme which combines the key features of the Shewhart and CUSUM control procedures is described and evaluated.
Journal ArticleDOI
Exact results for shewhart control charts with supplementary runs rules
TL;DR: In this article, the exact run-length properties of Shewhart control charts with supplementary runs rules were obtained using Markov chains, and a simple and efficient method was given.
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