A two-phase objective function for a constrained MPC and its application to a grinding plant

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Volume Title

A4 Artikkeli konferenssijulkaisussa
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Authors

Date

2009

Department

Department of Biotechnology and Chemical Technology
Department of Chemical and Metallurgical Engineering

Major/Subject

Mcode

Degree programme

Language

en

Pages

Series

IFAC PROCEEDINGS VOLUMES, Volume 42, issue 23, pp. 31-36

Abstract

In the paper a two-phase MPC controller is described that uses a non-quadratic terminal cost. The terminal cost is computed with respect to a predefined control strategy, and it can therefore be treated as the second phase of the method. Because the problem of optimizing the MPC objective is not a quadratic programming problem, medium-scale, gradient-based optimization methods are used for the MPC implementation. The method is efficient for problems which have a lot of soft constraints, because it avoids the introduction of slack variables. The stability of the MPC is established in the paper, and the method is compared with an unconstrained MPC in the grinding plant optimization problem.

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Keywords

MPC, MPC stability, MPC optimality, Grinding Plant optimization

Other note

DOI

10.3182/20091014-3-CL-4011.00007

Citation

Zakharov, A, Boriouchkine, A & Jämsä-Jounela, S-L 2009, 'A two-phase objective function for a constrained MPC and its application to a grinding plant', IFAC PROCEEDINGS VOLUMES, vol. 42, no. 23, pp. 31-36. https://doi.org/10.3182/20091014-3-CL-4011.00007

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https://urn.fi/URN:NBN:fi:aalto-201609023246

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[article-cris] Kemian tekniikan korkeakoulu / CHEM