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EnglishMonitoring the coefficient of variation (CV) allows process monitoring to be performed when both theprocess mean and the standard-deviation are not constant but, nevertheless, proportional. Until now,few research papers have investigated the monitoring of the CV in a short production run context. This paper investigates the design and implementation of a Variable Sampling Interval (VSI) Shewhart control chart to monitor the coefficient of variation in a short production run context. Formulas for the truncated average time to signal are derived and a performance comparison is carried out with a Fixed Sampling Rate Shewhart chart monitoring the CV. An example illustrates the use of this chart on real industrial data.
| Titolo: | A Variable Sampling Interval Shewhart Control Chart for Monitoring the Coefficient of Variation in Short Production Runs | |
| Autori interni: | ||
| Data di pubblicazione: | 2017 | |
| Rivista: | ||
| Handle: | http://hdl.handle.net/20.500.11769/20397 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/20.500.11769/20397
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