Robust sensor fault detection and isolation for a Steer-by-Wire system based on sliding mode observer

Author

Dhahri, Slim ; Sellami, Anis ; Ben Hmida, Faycal

Author_Institution

Higher Sch. of Sci. & Tech. of Tunis, Univ. of Tunis, Tunis, Tunisia

fYear

2012

fDate

25-28 March 2012

Firstpage

450

Lastpage

454

Abstract

A new approach for the design of robust H_∞ sliding mode observer for Steer-by-Wire (SBW) systems with parametric uncertainties and sensor faults is proposed based on linear matrix inequalities (LMIs). The resulting H_∞ observer guarantees asymptotic stability of the estimation error dynamics and is robust against parametric uncertainties. A sensor fault estimation scheme is presented where the estimated signal can approximate the fault signal to any accuracy. The effectiveness of the proposed approach is verified by simulations.

Keywords

H^∞ control; asymptotic stability; estimation theory; fault diagnosis; linear matrix inequalities; observers; road vehicles; robust control; steering systems; uncertain systems; variable structure systems; vehicle dynamics; H∞ observer; LMI; SBW systems; asymptotic stability; estimated signal; estimation error dynamics; fault signal; linear matrix inequality; parametric uncertainty; robust H∞ sliding mode observer design; robust sensor fault detection and isolation; sensor fault estimation scheme; sensor faults; steer-by-wire system; Observers; Robustness; Steering systems; Uncertainty; Vehicle dynamics; Vehicles; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference (MELECON), 2012 16th IEEE Mediterranean

Conference_Location

Yasmine Hammamet

ISSN

2158-8473

Print_ISBN

978-1-4673-0782-6

Type

conf

DOI

10.1109/MELCON.2012.6196470

Filename

6196470