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A Dual Gradient Projection Quadratic Programming Algorithm Tailored for Model Predictive Control
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-6957-2603
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
2008 (English)In: Proceedings of Reglermöte 2008, 2008, 202-209 p.Conference paper, Published paper (Other academic)
Abstract [en]

The objective of this work is to derive a QPalgorithm tailored for MPC. More specific, the primary targetapplication is MPC for discrete-time hybrid systems. A desiredproperty of the algorithm is that warm starts should be possibleto perform efficiently. This property is very important for online linear MPC, and it is crucial in branch and bound forhybrid MPC. In this paper, a dual active set-like QP methodwas chosen because of its warm start properties. A drawbackwith classical active set methods is that they often requiremany iterations in order to find the active set in optimum.Gradient projection methods are methods known to be ableto identify this active set very fast and such a method wastherefore chosen in this work. The gradient projection methodwas applied to the dual QP problem and it was tailored for theMPC application. Results from numerical experiments indicatethat the performance of the new algorithm is very good, bothfor linear MPC as well as for hybrid MPC. It is also noticed thatthe number of QP iterations is significantly reduced compared to classical active set methods.

Place, publisher, year, edition, pages
2008. 202-209 p.
Keyword [en]
Model predictive control, Hybrid systems, Quadratic programming, Mixed integer quadratic programming
National Category
Engineering and Technology Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-89037OAI: oai:DiVA.org:liu-89037DiVA: diva2:606915
Conference
Reglermöte 2008, Luleå, Sweden, June, 2008
Available from: 2013-02-21 Created: 2013-02-19 Last updated: 2016-08-31

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Axehill, DanielHansson, Anders

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Citation style
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  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • text
  • asciidoc
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