A modified economic-statistical design of the T2 control chart with variable sample sizes and control limits

Alireza Faraz

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

22 Zitate (Scopus)

Abstract

Recent studies have shown that using variable sampling size and control limits (VSSC) schemes result in charts with more statistical power than variable sampling size (VSS) when detecting small to moderate shifts in the process mean vector. This paper presents an economic-statistical design (ESD) of the VSSC T2 control chart using the general model of Lorenzen and Vance [22]. The genetic algorithm approach is then employed to search for the optimal values of the six test parameters of the chart. We then compare the expected cost per unit of time of the optimally designed VSSC chart with optimally designed VSS and FRS (fixed ratio sampling) T2 charts as well as MEWMA charts.

OriginalspracheEnglisch
Seiten (von - bis)2459-2469
Seitenumfang11
FachzeitschriftJournal of Applied Statistics
Jahrgang38
Ausgabenummer11
DOIs
PublikationsstatusVeröffentlicht - Nov 2011

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