Non-linear predictive controller for uncertain process modelled by GOBF-Volterra models
by Kais Bouzrara; Abdelkader Mbarek; Tarek Garna
International Journal of Modelling, Identification and Control (IJMIC), Vol. 19, No. 4, 2013

Abstract: This paper proposes a new approach for synthesising a predictive control for non-linear uncertain process based on a proposed reduced complexity discrete-time Volterra model known as GOBF-Volterra model. This model, provided by expanding each Volterra kernel on independent generalised orthonormal basis functions (GOBF), is efficient for the synthesis of non-linear model-based predictive control (NMBPC) which copes with physical constraints and geometrical constraints due to parameter uncertainties. A quadratic criterion is optimised and a new optimisation algorithm, formulated as a quadratic programming (QP) under linear and non-linear constraints, is proposed. Simulation results on a chemical reactor are presented to illustrate the performance of the proposed NMBPC strategy for uncertain process. This reveals that the stability performance of the resulting closed-loop system depends on the choice of the tuning parameters.

Online publication date: Sun, 28-Jul-2013

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