An Optimal and Stabilising PI Controller with an Anti-windup Scheme for a Purification Process of Potable Water

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Authors

This paper deals with a heuristic optimal strategy for the parameters of a PI controller to be applied in a system used for the regeneration of potable water. Because of the presence of a saturation an anti-windup control structure is considered to manage saturation effects. In order to analyse the stability and the dynamic performance of the controlled system a Lyapunov approach is proposed. Through this approach the condition of the three parameters which characterise the controller (PI and anti-windup scheme) are calculated to obtain a compromise between stable fast dynamics and and an optimality according to a chosen cost function to be minimised. The method consists of increasing the parameter of the proportional controller until the step answer of the controlled system equals the desired settling time. After that a heuristic optimisation algorithm is applied for setting up the other parameters of the controller. Simulations using real parameters of the system are shown.
Original languageEnglish
JournalIFAC-PapersOnLine
Volume48
Issue number25
Pages (from-to)259-264
Number of pages6
ISSN2405-8971
DOIs
Publication statusPublished - 01.10.2015
Event16th IFAC Workshop on Control Applications of Optimization - CAO’2015 - Garmisch-Partenkirchen, Germany
Duration: 06.10.201509.10.2015
Conference number: 16
https://www.ifac-control.org/events/control-applications-of-optimization-16th-cao-2015

    Research areas

  • Engineering - Applications, Optimal control, Lyapunov Stability, saturation control, Anti-windup

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