Output Feedback Model Predictive Tracking Control Using a Slope Bounded Nonlinear Model

S. M. Lee (), O. M. Kwon () and Ju H. Park ()
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S. M. Lee: Daegu University
O. M. Kwon: Chungbuk National University
Ju H. Park: Yeungnam University

Journal of Optimization Theory and Applications, 2014, vol. 160, issue 1, No 12, 239-254

Abstract: Abstract In this paper, an output feedback model predictive tracking control method is proposed for constrained nonlinear systems, which are described by a slope bounded model. In order to solve the problem, we consider the finite horizon cost function for an off-set free tracking control of the system. For reference tracking, the steady state is calculated by solving by quadratic programming and a nonlinear estimator is designed to predict the state from output measurements. The optimized control input sequences are obtained by minimizing the upper bound of the cost function with a terminal weighting matrix. The cost monotonicity guarantees that tracking and estimation errors go to zero. The proposed control law can easily be obtained by solving a convex optimization problem satisfying several linear matrix inequalities. In order to show the effectiveness of the proposed method, a novel slope bounded nonlinear model-based predictive control method is applied to the set-point tracking problem of solid oxide fuel cell systems. Simulations are also given to demonstrate the tracking performance of the proposed method.

Keywords: Output feedback; Model predictive tracking control; Slope bounded nonlinear model; Convex optimization problem; Fuel cell (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s10957-012-0201-8

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