Comparing the efficacy of coefficient of variation control charts using generalized multiple dependent state sampling with various run-rule control charts
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Date
2024
Journal Title
Journal ISSN
Volume Title
Publisher
Springer Science and Business Media LLC
Abstract
This paper aimed to develop a coefficient of variation (CV) control chart utilizing the generalized multiple dependent state (GMDS) sampling approach for CV monitoring. We conducted a comprehensive examination of this designed control chart in comparison to existing control charts based on multiple dependent state sampling (MDS) and the Shewhart-type CV control chart, with a focus on average run lengths. The results were then compared to run-rule control charts available in the existing literature. Additionally, we elucidated the implementation of the proposed control chart through concrete examples and a simulation study. The findings clearly demonstrated that the GMDS sampling control chart shows significantly superior accuracy in detecting process shifts when compared to the MDS sampling control chart. As a result, the control chart approach presented in this paper holds significant potential for applications in textile and medical industries, particularly when researchers seek to identify minor to moderate shifts in the CV, contributing to enhanced quality control and process monitoring in these domains.
Description
Full text. Available at https://www.nature.com/articles/s41598-024-53296-6
Keywords
Coefficient of Variation (CV) Control Chart, Generalized Multiple Dependent State (GMDS) Sampling, Average Run Lengths (ARL), Process Shift Detection, Quality Control in Textile and Medical Industries
Citation
Rao, G. S., Aslam, M., Alamri, F. S., & Jun, C. H. (2024). Comparing the efficacy of coefficient of variation control charts using generalized multiple dependent state sampling with various run-rule control charts. Scientific reports, 14(1), 2726.