An exponentially weighted moving average control chart based on signed ranks for finite horizon processes. Issue Volume 35:Issues 2(2023) (3rd April 2023)

• Record Type: Journal Article
• Authors: Perdikis, Theodoros; Celano, Giovanni; Psarakis, Stelios; Castagliola, Philippe
• Is Part Of: Quality engineering. Volume 35:Issues 2(2023)
• Page Start: 290
• Page End: 303
• Publication Date: 2023-04-03
• Subjects: distribution-free -- Markov processes -- quality control -- statistical process monitoring -- Wilcoxon signed rank statistic; Quality control -- Periodicals; Production management -- Quality control -- Periodicals; 658.5
• DOI: 10.1080/08982112.2022.2125815
• Languages: English
• ISSNs: 0898-2112

Abstract

Abstract: Distribution-free control charts are an efficient quality monitoring tool to inspect lots of parts manufactured within a finite production horizon. In this work, the performance of the Exponentially Weighted Moving Average chart based on the Wilcoxon signed rank statistic is investigated for on-line monitoring of finite production runs. The chart's on-target performance is evaluated through a specific non-homogeneous Markov chain model under different process scenarios. A numerical analysis is conducted for determining its optimal design and a performance comparison with other available schemes is presented for different symmetric distributions of observations. Finally, an illustrative example is presented to show a practical implementation of the investigated chart.