Robust high order augmented observer based control for nonlinear systems

Author

Wonhee Kim ; Chung Choo Chung

Author_Institution

Hyosung Power & Ind. Syst. Performance Group, R&D Center, Anyang, South Korea

fYear

2012

fDate

10-13 Dec. 2012

Firstpage

919

Lastpage

924

Abstract

We propose a robust high order augmented observer (RHOAOB) based control for nonlinear systems. The RHOAOB is designed to estimate full state and a disturbance. The disturbance includes the unmeasurable external disturbance and model uncertainties for nonlinear systems. The performance of the RHOAOB is analyzed in the frequency domain, as well as the state space. For the output feedback control, the controller is implemented using backstepping procedure. The RHOAOB based control is robust to external disturbances and model uncertainties. Furthermore, the proposed method requires only system dimension.

Keywords

control system synthesis; feedback; nonlinear control systems; observers; state-space methods; uncertain systems; RHOAOB based control; backstepping procedure; external disturbance; frequency domain; model uncertainties; nonlinear system control; output feedback control; robust high order augmented observer; state space; Eigenvalues and eigenfunctions; Estimation error; Nonlinear systems; Observers; Output feedback; Robustness; Augmented observer; Disturbance observer; Nonlinear system; Output feedback;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control (CDC), 2012 IEEE 51st Annual Conference on

Conference_Location

Maui, HI

ISSN

0743-1546

Print_ISBN

978-1-4673-2065-8

Electronic_ISBN

0743-1546

Type

conf

DOI

10.1109/CDC.2012.6426620

Filename

6426620