title: Sampled data observer based inter-sample output predictor for Electro-Hydraulic Actuators.
abstract: In this paper, a Sampled Data Disturbance Observer which simultaneously estimates the unmeasurable states and the uncertainties for the Electro-Hydraulic Actuators systems are presented. The novelty of our approach is the use of an inter-sample output predictor which allows the user to increase the frequency acquisition of the piston position sensor without affecting the convergence performance. The stability analysis of the proposed observer is proved using the Lyapunov function adapted to hybrid systems. To show the efficiency of the proposed observer, numerical simulations of a control application which combine the proposed observer and a Proportional Integral controller for the purpose of piston position tracking problem are presented.
authors.affiliation: IRSEEM/ESIGELEC Technopôle du Madrillet, 76801 Saint Etienne du Rouvray, France. Electronic address: sofiane.ahmedali@esigelec.fr.
authors.forename: Ahmed Ali
authors.initials: AA
authors.lastname: Sofiane
keywords: Electro-Hydraulic Actuator (EHA) system; Extended High Gain State Observer (EHGSO).; Inter-sample output predictor; Sampled Data Disturbance Observer (SDDOB)