Variable parameter and double sampling (X)over-bar charts in the presence of correlation: The Markov chain approach
Nenhuma Miniatura disponível
Data
2011-04-01
Autores
Branco Costa, Antonio Fernando [UNESP]
Guerreiro Machado, Marcela Aparecida [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
The general assumption under which the (X) over bar chart is designed is that the process mean has a constant in-control value. However, there are situations in which the process mean wanders. When it wanders according to a first-order autoregressive (AR (1)) model, a complex approach involving Markov chains and integral equation methods is used to evaluate the properties of the (X) over bar chart. In this paper, we propose the use of a pure Markov chain approach to study the performance of the (X) over bar chart. The performance of the chat (X) over bar with variable parameters and the (X) over bar with double sampling are compared. (C) 2011 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
Markov chain, (X)over-bar chart, Correlation, Variable parameter, Double sampling
Como citar
International Journal of Production Economics. Amsterdam: Elsevier B.V., v. 130, n. 2, p. 224-229, 2011.