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Assessment and Future Directions of Nonlinear Model Predictive ...

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60 M.V. Kothare <strong>and</strong> Z. Wanwe were able to characterize explicitly an estimated region <strong>of</strong> stability <strong>of</strong> thedesigned local output feedback predictive controller, we could exp<strong>and</strong> it by designingmultiple predictive controllers, <strong>and</strong> on-line switch between the local controllers<strong>and</strong> achieve nonlinear transitions with guaranteed stability. This algorithmprovides a general framework for the scheduled output feedback MPCdesign. Furthermore, we have shown that this scheduled MPC is easily implementableby applying it to a two tank process.AcknowledgmentsPartial financial support for this research from the American Chemical Society’sPetroleum Research Fund (ACS-PRF) <strong>and</strong> from the P. C. Rossin AssistantPr<strong>of</strong>essorship at Lehigh University is gratefully acknowledged.References[1] D. Angeli, A. Casavola, <strong>and</strong> E.Mosca. Constrained predictive control <strong>of</strong> nonlinearplant via polytopic linear system embedding. International Journal <strong>of</strong> Robust &<strong>Nonlinear</strong> Control, 10(13):1091–1103, Nov 2000.[2] N.H. El-Farra, P. Mhaskar, <strong>and</strong> P.D. Christ<strong>of</strong>ides. Uniting bounded control <strong>and</strong>MPC for stabilization <strong>of</strong> constraed linear systems. Automatica, 40:101–110, 2004.[3] N.H. El-Farra, P. Mhaskar, <strong>and</strong> P.D. Christ<strong>of</strong>ides. Hybrid predictive control <strong>of</strong>nonlinear systems: method <strong>and</strong> applications to chemical processes. InternationalJournal <strong>of</strong> Robust <strong>and</strong> <strong>Nonlinear</strong> Control, 14:199–225, 2004.[4] R. Findeisen, L. Imsl<strong>and</strong>, F. Allgower, <strong>and</strong> B.A. Foss. State <strong>and</strong> output feedbacknonlinear model predictive control: An overview. European Journal <strong>of</strong> Control, 9(2-3), pages 190-206, 2003.[5] R. Findeisen, H. Chen, <strong>and</strong> F. Allgower. <strong>Nonlinear</strong> predictive control for setpointfamilies. Proceedings <strong>of</strong> the 2000 American Control Conf., volume 1, pages 260-264, Chicago, 2000.[6] R. Findeisen, M. Diehl, T. Burner, F. Allgower, H.G. Bock, <strong>and</strong> J.P. Schloder.Efficient output feedback nonlinear model predictive control. Proceedings <strong>of</strong> the2002 American Control Conference, pages 4752–4757, Anchorage, 2002.[7] A. Jadbabaie, J. Yu, <strong>and</strong> J. Hauser. Unconstrained receding-horizon control <strong>of</strong>nonlinear systems. IEEE Transactions on Automatic Control, 46(5):776–783, May2001.[8] H. K. Khalil. <strong>Nonlinear</strong> systems. Macmillan Publishing Company, 1992.[9] Y. Lu <strong>and</strong> Y. Arkun. A scheduling quasi-min-max <strong>Model</strong> <strong>Predictive</strong> Controlalgorithm for nonlinear systems. Journal <strong>of</strong> Process Control, 12:589–604, August2002.[10] David L. Ma, Danesh K. Tafti, <strong>and</strong> Richard D. Braatz. Optimal control <strong>and</strong>simulation <strong>of</strong> multidimensional crystallization processes. Computers & ChemicalEngineering, 26(7-8):1103–1116, 2002.[11] L. Magni, G. De Nicolao, L. Magnani, <strong>and</strong> R. Scattolini. A stabilizing model-basedpredictive control algorithm for nonlinear systems. Automatica, 37:1351–1362,2001.

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