Improving the performance of CUSUM charts
Article first published online: 15 JUL 2010
Copyright © 2010 John Wiley & Sons, Ltd.
Quality and Reliability Engineering International
Volume 27, Issue 4, pages 415–424, June 2011
How to Cite
Riaz, M., Abbas, N. and Does, R. J. M. M. (2011), Improving the performance of CUSUM charts. Qual. Reliab. Engng. Int., 27: 415–424. doi: 10.1002/qre.1124
- Issue published online: 23 MAY 2011
- Article first published online: 15 JUL 2010
- average run length (ARL);
- control charts;
- runs rules schemes;
The control chart is an important statistical technique that is used to monitor the quality of a process. Shewhart control charts are used to detect larger disturbances in the process parameters, whereas CUSUM and EWMA charts are meant for smaller and moderate changes. Runs rules schemes are generally used to enhance the performance of Shewhart control charts. In this study, we propose two runs rules schemes for the CUSUM charts. The performance of these two schemes is compared with the usual CUSUM, the weighted CUSUM, the fast initial response CUSUM and the usual EWMA schemes. The comparisons revealed that the proposed schemes perform better for small and moderate shifts, whereas they reasonably maintain their efficiency for large shifts as well. Copyright © 2010 John Wiley & Sons, Ltd.