Unknown inputs observers for state and unknown inputs estimation in a class of discrete-time Lipschitz nonlinear systems

Author

Seifeddine, Ben Warrad ; Slim, Dhahri ; Faycal, Ben Hmida

Author_Institution

ESSTT, Univ. of Tunis, Tunis, Tunisia

fYear

2013

fDate

21-23 March 2013

Firstpage

1

Lastpage

5

Abstract

In this paper, we propose a method for estimating of state and unknown inputs based in observers approach in a class of discrete-time Lipschitz nonlinear systems with unknown inputs both state and measurement. This method design is obtained using a particular Lyapunov function in order to guaranty the asymptotic stability of the error estimation. The observer gains are determined in terms of Linear Matrix inequalities (LMI). Performances of the proposed approach are illustrated through simulation results.

Keywords

Lyapunov methods; asymptotic stability; discrete time systems; linear matrix inequalities; nonlinear control systems; observers; state estimation; LMI; Lyapunov function; asymptotic stability; discrete-time Lipschitz nonlinear systems; error estimation; linear matrix inequalities; observer gain; observers approach; state input estimation; unknown input estimation; unknown input observer; Equations; Estimation error; Linear systems; Nonlinear systems; Observers; Vectors; Lipschitz systems; discrete-time; extended unknown inputs observers; nonlinear systems; state estimation; unknown disturbances; unknown inputs estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering and Software Applications (ICEESA), 2013 International Conference on

Conference_Location

Hammamet

Print_ISBN

978-1-4673-6302-0

Type

conf

DOI

10.1109/ICEESA.2013.6578384

Filename

6578384