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Model based control of a liquid swelling constrained batch reactor subject to recipe uncertainties
journal contribution
posted on 2009-12-11, 14:56 authored by Levente L. Simon, Zoltan NagyZoltan Nagy, Konrad HungerbuhlerThis work presents the application of nonlinear model predictive control (NMPC) to a
simulated industrial batch reactor subject to safety constraint due to reactor level swelling,
which can occur with relatively fast dynamics. Uncertainties in the implementation of recipes
in batch process operation are of significant industrial relevance. The paper describes a novel
control-relevant formulation of the excessive liquid rise problem for a two-phase batch
reactor subject to recipe uncertainties. The control simulations are carried out using a
dedicated NMPC and optimization software toolbox Optcon which implements state of the
art technologies. The open-loop optimal control problem is computed using the multipleshooting
technique and the arising non-linear programming problem is solved using a
sequential quadratic programming (SQP) algorithm tailored for large scale problems, based
on the freeware optimization environment HQP. The fast response of the NMPC controller is
guaranteed by the initial value embedding and real time iteration technologies. It is
concluded that the OptCon implementation allows small sampling times and the controller is
able to maintain safe and optimal operation conditions, with good control performance
despite significant uncertainties in the implementation of the batch recipe.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Citation
SIMON, L.L., NAGY, Z.K. and HUNGERBUHLER, K., 2009. Model based control of a liquid swelling constrained batch reactor subject to recipe uncertainties, Chemical Engineering Journal, 153 (1-3), pp. 151-158.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publication date
2009Notes
This is a journal article. It was published in the Chemical Engineering Journal [© Elsevier] and the definitive version is available www.elsevier.com/locate/cejISSN
1385-8947Language
- en