A STUDY OF COMBINED CUSUM-SHEWHART (???) CONTROL CHARTS

Publish Year: 1384
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

IIEC04_077

تاریخ نمایه سازی: 7 مهر 1385

Abstract:

The cumulative sum (CUSUM) control chart is known to be sensitive to slight changes in the process quality characteristics. The design of this control chart is based on a series of cumulative sums of the statistic derived from the data. To monitor both changes of the mean and variance simultaneously and comprehensively, we propose a combined CUSUM-Shewhart ??? control chart based on a single statistic for normally distributed characteristics. It has been demonstrated that the proposed combined chart detects the out-of-control state with smaller average run length (ARL) as compared to other charts like CUSUM ??? , omnibus EWMA, and the standard ??? control chart

Authors

Iraj Mahdavi

Mazandaran University of Science & Technology

Farhang Soleimani Gherkhlou

Mazandaran University of Science & Technology

Mohsen Akbarpour Shirazi

K. N. Toosi University of Technology