Slide 1 : Effect of Measurement Error and Autocorrelation on the Chart Antonio F. B. Costa
UNESP, São Paulo
Brazil Philippe Castagliola
Université de Nantes
France Friday, July 17th 2009Session 5, 10:15-10:40 International Symposium on Statistical Process Control
July 16-17 2009, Nantes, France
Slide 2 : Effect of Measurement Error Linna, K. and Woodall, W. H. (2001). “Effect of measurement error on Shewhart control charts”. Journal of Quality Technology 33, pp 213-222.
Slide 3 : Effect of Measurement Error
Slide 4 : Effect of Measurement Error
Slide 5 : Effect of Measurement Error Figure 1. The effect of the measurement error on the ARL, m=1 and n=4
Slide 6 : Effect of Measurement Error Figure 2. The effect of the measurement error on the ARL, m=4 and n=4
Slide 7 : Effect of the Autocorrelation
Slide 8 : Effect of the Autocorrelation Figure 3. The effect of the autocorrelation on the ARL
Slide 9 : Effect of the Autocorrelation Time of production Skipping one item.
Slide 10 : Effect of the Autocorrelation Figure 4. The effect of skipping items on the ARL values (n=4 and f=0.5)
Slide 11 : Effect of the Measurement Error and Autocorrelation
Slide 12 : Effect of the Measurement Error and Autocorrelation Figure 5. Effect of the autocorrelation and measurement error on the ARL
(n=4, m=1 e f=0.5)
Slide 13 : Effect of the Measurement Error and Autocorrelation Figure 4. Recovering the chart’s performance by multiple measurements and skipping items (n=4, C1=1.0 e f=0.5)
Acknowledgements : Acknowledgements This work was supported by:
1) CNPq – National Council for Scientific and Technological Development
Thanks a lot for your attention. : Thanks a lot for your attention. I would appreciate your suggestions.