Journal ArticleDOI
X̄ charts with variable sample size
TLDR
In this article, the authors considered the properties of the X chart when the size of each sample depends on what is observed in the preceding hours and the usual practice in using a control chart to monitor a process is to take samples of size n from the process every h hours.Abstract:
The usual practice in using a control chart to monitor a process is to take samples of size n from the process every h hours. This article considers the properties of the X chart when the size of each sample depends on what is observed in the preceding ..read more
Citations
More filters
Journal ArticleDOI
On the performance of Shewhart-type synthetic and runs-rules charts combined with an X chart
TL;DR: This work aims to demonstrate the efforts towards in-situ applicability of EMMARM, which aims to provide real-time information about concrete mechanical properties such as E-modulus and compressive strength in the response of the immune system.
Journal ArticleDOI
Optimal T2 control chart with a double sampling scheme - an alternative to the MEWMA chart
TL;DR: The effect of double sampling on cost, a criterion as important as detection rate, is investigated, and the economic performance of the ESD DS T2 charts is favorably compared to the MEWMA and other VRS T2 control charts in the literature.
Journal ArticleDOI
The Double Sampling S2 Chart with Estimated Process Variance
TL;DR: In this paper, exact bounds for the parameters of the double sampling S2 chart with known process variance were proposed and they also investigated the properties of the S 2 chart with e.g.
Journal ArticleDOI
Adaptive ―X Control Charts with Sampling at Fixed Times
Yu-Chang Lin,Chao-Yu Chou +1 more
TL;DR: The application of ‘sampling at fixed times’ to the adaptive ―X control charts is advanced and from the practical viewpoint, the AFT ―X charts are considered to be more convenient to administer than the traditional adaptive ― X charts.
Journal ArticleDOI
Optimum design of a new VSS-NP chart with adjusting sampling inspection
Wenhui Zhou,Zhaotong Lian +1 more
TL;DR: The result shows that ASI-NP chart's performance characteristics are significantly better than those of classical NP charts in all situations, especially, in processes with slight shift and high quality.
References
More filters
Journal ArticleDOI
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
A Combined Adaptive Sample Size and Sampling Interval X Control Scheme
TL;DR: In this paper, a combine X control chart is proposed, where the process control engineer waits until the control scheme signals an out-of-control condition, and then the process can be restarted.
Journal Article
Double sampling X charts
TL;DR: In this article, the double sampling X chart is proposed, which is the counterpart to double sampling plans, which offers better statistical efficiency (in terms of statistical efficiency) than double sampling plan.
Journal ArticleDOI
Double Sampling X̅ Charts
TL;DR: The purpose of this paper is to propose a new control chart, the double sampling X chart, which is the counterpart to double sampling plans, which offers better statistical efficiency.