Control charts: a cost-optimization approach for processes with random shifts

✍ Scribed by András Zempléni; Miklós Véber; Belmiro Duarte; Pedro Saraiva

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 160 KB
• Volume: 20
• Category: Article
• ISSN: 1524-1904
• DOI: 10.1002/asmb.521

✦ Synopsis

Abstract

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.