%0 Journal Article %T Model-Based Optimizing Control and Estimation Using Modelica Model %A L. Imsland %A P. Kittilsen %A T.S. Schei %J Modeling, Identification and Control %D 2010 %I Norwegian Society of Automatic Control %R 10.4173/mic.2010.3.3 %X This paper reports on experiences from case studies in using Modelica/Dymola models interfaced to control and optimization software, as process models in real time process control applications. Possible applications of the integrated models are in state- and parameter estimation and nonlinear model predictive control. It was found that this approach is clearly possible, providing many advantages over modeling in low-level programming languages. However, some effort is required in making the Modelica models accessible to NMPC software. %K Non-linear model predictive control %K state estimation %K Modelica %K offshore oil- and gas production %U http://www.mic-journal.no/PDF/2010/MIC-2010-3-3.pdf