Title: Output feedback predictive control for uncertain non-linear switched systems

Authors: Baili Su; Guoyuan Qi; Barend Jacobus Van Wyk

Addresses: School of Electrical Information and Automation, Qufu Normal University, Shandong, 276826, China. ' F'SATIE and Department of Electrical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa. ' F'SATIE and Department of Electrical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa

Abstract: In this paper, a hybrid predictive controller is proposed for a class of uncertain non-linear switched system with input constraints and unavailable state measurements. The main idea is to design a bounded non-linear controller and a predictive controller for each subsystem using Lyapunov functions and state observers, also a suitable switched law to stabilise the closedloop subsystem, and to provide an explicitly characterised set of initial condition. For the whole switched system, based on the state estimates, a suitable switched law is designed to ensure the whole closed-loop's stability. The simulation results for a chemical process show the validity of the controller proposed in this paper.

Keywords: nonlinear switched systems; Lyapunov function; state observer; control constraints; output feedback; model predictive control; MPC; stable region; uncertainty; simulation; chemical process.

DOI: 10.1504/IJMIC.2012.049686

International Journal of Modelling, Identification and Control, 2012 Vol.17 No.3, pp.195 - 205

Published online: 17 Dec 2014 *

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