Author(s):
Zempléni, András 
; Véber, Miklós ; Duarte, Belmiro ; Saraiva, Pedro
Date: 2004
Persistent ID: http://hdl.handle.net/10316/8188
Origin: Estudo Geral - Universidade de Coimbra
Document details
Control charts: a cost-optimization approach for processes with random shifts
Description
In this paper we describe an approach for establishing control limits and sampling times which derives from economic performance criteria and a model for random shifts. The total cost related to both production and control is calculated, based on cost estimates for false alarms, for not identifying a true out of control situation, and for obtaining a data record through sampling. We describe the complete process for applying the method and compare with conventional procedures to real data from a Portuguese pulp and paper industrial plant. It turns out that substantial cost-reductions may be obtained. Copyright © 2004 John Wiley & Sons, Ltd. http://dx.doi.org/10.1002/asmb.521
In this paper we describe an approach for establishing control limits and sampling times which derives from economic performance criteria and a model for random shifts. The total cost related to both production and control is calculated, based on cost estimates for false alarms, for not identifying a true out of control situation, and for obtaining a data record through sampling. We describe the complete process for applying the method and compare with conventional procedures to real data from a Portuguese pulp and paper industrial plant. It turns out that substantial cost-reductions may be obtained. Copyright © 2004 John Wiley & Sons, Ltd. http://dx.doi.org/10.1002/asmb.521
Document Type
Article
Language English
Language English
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