Search Results - "Foss, Bjarne"

Applying the unscented Kalman filter for nonlinear state estimation by Kandepu, Rambabu, Foss, Bjarne, Imsland, Lars

“…Based on presentation of the principles of the EKF and UKF for state estimation, we discuss the differences of the two approaches. Four rather different…”
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Modeling and control of a SOFC-GT-based autonomous power system by Kandepu, Rambabu, Imsland, Lars, Foss, Bjarne A., Stiller, Christoph, Thorud, Bjørn, Bolland, Olav

“…In this article, a dynamic, lumped model of a solid oxide fuel cell (SOFC) is described, as a step towards developing control relevant models for a SOFC…”
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State and Output Feedback Nonlinear Model Predictive Control: An Overview by Findeisen, Rolf, Imsland, Lars, Allgower, Frank, Foss, Bjarne A.

“…The purpose of this paper is twofold. In the first part, we give a review on the current state of nonlinear model predictive control (NMPC). After a brief…”
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More efficient predictive control by Imsland, Lars, Bar, Nadav, Foss, Bjarne A.

“…An approach for constrained predictive control of linear systems (or uncertain systems described by polytopic uncertainty models) is presented. The approach…”
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Process control in conventional oil and gas fields—Challenges and opportunities by Foss, Bjarne

“…This paper presents some key operational challenges in the upstream petroleum industries in which advanced control and model-based optimization has or may have…”
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Ph.d.-utdanning innen ingeniørfag by Foss, Bjarne

“…Doktorgradsutdanning er en viktig del av samfunnsoppdraget til universitets- og høyskolesektoren. Dette har ført til en kraftig økning i antallet ph.d.-grader…”
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Dual adaptive model predictive control by Heirung, Tor Aksel N., Ydstie, B. Erik, Foss, Bjarne

“…We present an adaptive dual model predictive controller (dmpc) that uses current and future parameter-estimation errors to minimize expected output error by…”
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Steady-state real-time optimization using transient measurements by Krishnamoorthy, Dinesh, Foss, Bjarne, Skogestad, Sigurd

“…•A hybrid RTO strategy with static optimization and dynamic model adaptation using transient measurements.•Hybrid RTO provides similar performance to DRTO, at…”
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Oil production optimization—A piecewise linear model, solved with two decomposition strategies by Gunnerud, Vidar, Foss, Bjarne

“…This paper presents a new method for real-time optimization of process systems with a decentralized structure where the idea is to improve computational…”
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A note on stability, robustness and performance of output feedback nonlinear model predictive control by Imsland, Lars, Findeisen, Rolf, Bullinger, Eric, Allgöwer, Frank, Foss, Bjarne A.

“…In recent years, nonlinear model predictive control (NMPC) schemes have been derived that guarantee stability of the closed loop under the assumption of full…”
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Echo State Networks for data-driven downhole pressure estimation in gas-lift oil wells by Antonelo, Eric A., Camponogara, Eduardo, Foss, Bjarne

“…Process measurements are of vital importance for monitoring and control of industrial plants. When we consider offshore oil production platforms, wells that…”
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Petroleum production optimization – A static or dynamic problem? by Foss, Bjarne, Knudsen, Brage Rugstad, Grimstad, Bjarne

“…•An efficient formulation for petroleum production is presented.•Repetitive use of static models suffices in most cases.•A generalized disjunctive programming…”
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An Augmented Lagrangian for Optimal Control of DAE Systems: Algorithm and Properties by Aguiar, Marco Aurelio, Camponogara, Eduardo, Foss, Bjarne

“…This article proposes a relax-and-discretize approach for optimal control of continuous-time differential algebraic systems. It works by relaxing the algebraic…”
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Operating regime based process modeling and identification by Johansen, Tor A., Foss, Bjarne A.

“…This paper presents a non-linear modeling framework that supports model development in between empirical and mechanistic modeling. A model is composed of a…”
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Analysis and characterization of complex reactor behaviour: A case study by Lund, Berit Floor, Foss, Bjarne A., Løvåsen, Kjell R.

“…This paper analyzes the steady state and dynamic behaviour of a reactor for production of silicon metal, a submerged arc furnace. The furnace behaviour has…”
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Shut-in based production optimization of shale-gas systems by Knudsen, Brage Rugstad, Foss, Bjarne

“…•A novel cyclic operational scheme to enhance the utilization of late-life shale-gas systems.•Reduced-order PDE-based well and reservoir proxy model.•A…”
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A Primal decomposition algorithm for distributed multistage scenario model predictive control by Krishnamoorthy, Dinesh, Foss, Bjarne, Skogestad, Sigurd

“…•Computationally efficient solution of multistage model predictive control using scenario decomposition.•A primal decomposition framework for scenario…”
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Global optimization of multiphase flow networks using spline surrogate models by Grimstad, Bjarne, Foss, Bjarne, Heddle, Richard, Woodman, Malcolm

“…•A framework for modelling and optimization of multiphase flow networks is presented.•A trade-off between optimization time and accuracy is sought.•A brief…”
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Flow control of fluids through porous media by Hasan, Agus, Foss, Bjarne, Sagatun, Svein

“…This paper discusses flow control of fluids through porous media, specifically related to its application in petroleum science. The flow of fluids is described…”
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MPC-based dual control with online experiment design by Heirung, Tor Aksel N., Foss, Bjarne, Ydstie, B. Erik

“…We present two dual control approaches to the model maintenance problem based on adaptive model predictive control (mpc). The controllers employ systematic…”
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