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
Capability indices Tolerances and relative precision index In measurement systems, accuracy describes how close the measurement is to its true value. Precision, on the other hand, tells about reproducibility of the measurement: if we repeat the measurement several times, how close the results of repetitions are to each other. In quality control, we can interpret
Authors & references
Authors:
Professor Emeritus Kauko Leiviskä, University of Oulu
References:
- Oakland, J. S. 1986. Statistical process control. 3rd subedition. Butterworth-Heinemann, London. ISBN 978–0750624640.
- “What is Process Capability?” NIST/Sematech Engineering Statistics Handbook. National Institute of Standards and Technology. [Online] Available from: https://www.itl.nist.gov/div898/handbook/pmc/section1/pmc16.htm [Accessed 17th March 2020].
- Wikipedia contributors. Process capability index. Wikipedia, The Free Encyclopedia; 2019 Sep 28. [Online] Available from: https://en.wikipedia.org/wiki/Process_capability_index [Accessed 17th March 2020].
- Boyles, R. 1991. The Taguchi Capability Index. Journal of Quality Technology. 23(1): 17–26.
Videos
Exercises
This page has been updated 24.11.2020