Epprecht, Eugenio K. Costa, Antonio F. B. Mendes, Flavia C. T.
Verschenen in:
IIE transactions
Paginering:
Jaargang 35 (2003) nr. 6 pagina's 567-582
Jaar:
2003-06
Inhoud:
We develop a general model for adaptive c , np , u and p control charts in which one, two or three design parameters (sample size, sampling interval and control limit width) switch between two values, according to the most recent process information. For a given in-control average sampling rate and a given false alarm rate, the adaptive chart detects changes in the process much faster than a chart with fixed parameters. Moreover, this study also offers general guidance on how to choose an effective design.