Title: Unknown inputs observers design for a class of nonlinear switched systems

Authors: Imen Manaa; Nabil Barhoumi; Faouzi M'Sahli

Addresses: Department of Electrical Engineering ESIER, National Engineering School, 5019, Monastir, Tunisia ' Department of Electrical Engineering ESIER, National Engineering School, 5019, Monastir, Tunisia ' Department of Electrical Engineering ESIER, National Engineering School, 5019, Monastir, Tunisia

Abstract: The main topic of this paper is the problem of constructing unknown inputs observers for MIMO nonlinear switched systems. The idea is to switch between different observers to estimate the unknown states and the non-measured inputs for every transient's periods with the choice of various values of the gain to reduce the error estimation. Theoretical stability analysis is derived to ensure the convergence of the designed observer. Instead, simulation results on a quadruple tank process are given in order to assess the efficiency of the proposed hybrid observers.

Keywords: unknown input observers; stability analysis; quadruple tank process; observer design; nonlinear switched systems; MIMO systems.

DOI: 10.1504/IJMIC.2015.067714

International Journal of Modelling, Identification and Control, 2015 Vol.23 No.1, pp.45 - 54

Published online: 31 Mar 2015 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article