Buscar
Mostrando ítems 1-10 de 3906
A synthetic control chart for monitoring the process mean and variance
(2006-04-10)
Purpose - The aim of this paper is to present a synthetic chart based on the non-central chi-square statistic that is operationally simpler and more effective than the joint X̄ and R chart in detecting assignable cause(s). ...
Monitoring bivariate processes
(2009-09-01)
The T2 chart and the generalized variance |S| chart are the usual tools for monitoring the mean vector and the covariance matrix of multivariate processes. The main drawback of these charts is the difficulty to obtain and ...
Monitoring bivariate processes
(2009-09-01)
The T2 chart and the generalized variance |S| chart are the usual tools for monitoring the mean vector and the covariance matrix of multivariate processes. The main drawback of these charts is the difficulty to obtain and ...
A combined npx X control chart to monitor the process mean in a two-stage sampling
(Quality and Reliability Engineering International, 2023)
Monitoring process mean and variability with one non-central chi-square chart
(Carfax Publishing, 2004-12-01)
Traditionally, an (X) over bar -chart is used to control the process mean and an R-chart to control the process variance. However, these charts are not sensitive to small changes in process parameters. A good alternative ...
Monitoring process mean and variability with one non-central chi-square chart
(Carfax Publishing, 2004-12-01)
Traditionally, an (X) over bar -chart is used to control the process mean and an R-chart to control the process variance. However, these charts are not sensitive to small changes in process parameters. A good alternative ...
The performance of the Cpk chart
(2021-01-01)
The Cpk is the distance between the process mean and the closest specification limit divided by three times the process standard deviation. The index Cpk was created to quantify the ability of the process to produce products ...