Process control and automation
- Introduction to process control and automation
- Development of process automation
- Fibre process automation
- Chemical recovery as a control object
- Advances in paper machine automation
- Paper machine as a dynamical system
- Tasks in paper machine control and management
- Control of stock flow concentration and quality
- Machine direction control
- Cross-directional control – The static optimisation
- Cross-directional control – Dynamics
- Cross-directional control – further aspects
- Controlling functional paper properties
- Managing grade chances in the paper machine
- Managing disturbances caused by broke and recovered solids
- Millwide systems
- Modelling and control methods
Cusum charts Cumulative sum (Cusum) chart was developed already during the 1950s for change detection. It mainly applies for detecting the change in the mean value. It is somewhat more complicated to use than the Shewhart charts, but more efficient in detecting small shifts in the mean. This is especially true when the changes are
Authors & references
Authors:
Professor Emeritus Kauko Leiviskä, University of Oulu
References:
- Page, E. S. 1954. Continuous Inspection Scheme. Biometrika 41:100–115.
- NIST/SEMATECH e-Handbook of Statistical Methods. Cusum control charts . [Online] Available from: https://www.itl.nist.gov/div898/handbook/pmc/section3/pmc323.htm [Accessed 17th March 2020].
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Exercises
This page has been updated 18.11.2020