Monitoring the coefficient of variation: A literature review
There are some situations when the process mean fluctuates from time to time but is still
considered as in-control and the process standard deviation is a linear function of the …
considered as in-control and the process standard deviation is a linear function of the …
EWMA monitoring schemes for MCV in short production runs with an application to the steel sleeve manufacturing process
XL Hu, JN Zhang, S Zhang, AA Tang… - Computers & Industrial …, 2023 - Elsevier
In industries, multi-variety and small batch processes are extremely common due to the fact
that the production process is moving towards flexible manufacturing to meet the increasing …
that the production process is moving towards flexible manufacturing to meet the increasing …
One-sided variable sampling interval EWMA control charts for monitoring the multivariate coefficient of variation in the presence of measurement errors
Online monitoring of the multivariate coefficient of variation (MCV) can be of interest in many
real situations in which the dispersion of a multivariate process is meant to remain constant …
real situations in which the dispersion of a multivariate process is meant to remain constant …
Economic design of residuals MEWMA control chart with variable sampling intervals and sample size
L Xue, Q Wang, C Li, L An - Communications in Statistics …, 2023 - Taylor & Francis
In order to improve the monitoring efficiency of the multivariable autocorrelation process and
reduce the cost of process control, an economic design method of residual Multivariate …
reduce the cost of process control, an economic design method of residual Multivariate …
Efficient control charts for monitoring process CV using auxiliary information
SA Abbasi - IEEE Access, 2020 - ieeexplore.ieee.org
Coefficient of variation (CV) control charts are a suitable choice for the monitoring of
variation in cases when the process standard deviation is proportional to the process mean …
variation in cases when the process standard deviation is proportional to the process mean …
Variable sampling interval EWMA chart for multivariate coefficient of variation
A control chart for monitoring the multivariate coefficient of variation (MCV) is used when the
focus is on monitoring the ratio of relative multivariate variability to the mean of a multivariate …
focus is on monitoring the ratio of relative multivariate variability to the mean of a multivariate …
Multivariate coefficient of variation charts with measurement errors
The effects of measurement errors on the performances of multivariate charts have not been
extensively investigated compared with univariate charts. More specifically, control charts for …
extensively investigated compared with univariate charts. More specifically, control charts for …
Efficient monitoring of coefficient of variation with an application to chemical reactor process
Control chart is a useful tool to monitor the performance of the industrial or production
processes. Control charts are mostly adopted to detect unfavorable variations in process …
processes. Control charts are mostly adopted to detect unfavorable variations in process …
Side‐sensitive modified group runs charts with and without measurement errors for monitoring the coefficient of variation
The coefficient of variation (CV) is used in process monitoring when the process mean and
standard deviation are proportional to each other. In this work, a side‐sensitive modified …
standard deviation are proportional to each other. In this work, a side‐sensitive modified …
A side‐sensitive synthetic coefficient of variation chart
Control charts for monitoring the coefficient of variation (γ) are useful for processes with an
inconsistent mean (μ) and a standard deviation (σ) which changes with μ, by monitoring the …
inconsistent mean (μ) and a standard deviation (σ) which changes with μ, by monitoring the …