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Robust Averaging Level Control
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Perstorp AB, Sweden.
2011 (English)Report (Other academic)
Abstract [en]

Frequent inlet flow changes typically cause problems for averaging level controllers. For a frequently changing inlet flow the upsets do not occur when the system is in steady state and the tank level at its set-point. For this reason the tuning of the level controller gets quite complicated, since not only the size of the upsets but also the time in between them relative to the hold up of the tank have to be considered. One way to obtain optimal flow filtering while directly accounting for future inlet flow upsets is to use closed-loop robust MPC, as proposed here. The behavior of the robust MPC controller differs from earlier proposed level controllers as it does not return the tank level to a fixed set-point following an inlet flow upset. Guidelines on the tuning of the controller is presented and its performance is compared to that of a previously proposed MPC approach.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2011. , 10 p.
Series
LiTH-ISY-R, ISSN 1400-3902 ; 3023
Keyword [en]
Averaging level control, Robust MPC, Surge tanks
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-97961ISRN: LiTH-ISY-R-3023OAI: oai:DiVA.org:liu-97961DiVA: diva2:650808
Funder
Swedish Foundation for Strategic Research
Available from: 2013-09-23 Created: 2013-09-23 Last updated: 2014-09-22Bibliographically approved

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Isaksson, AlfLöfberg, Johan

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CiteExportLink to record
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Citation style
  • apa
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