Title :
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
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;
Conference_Titel :
Decision and Control (CDC), 2012 IEEE 51st Annual Conference on
Conference_Location :
Maui, HI
Print_ISBN :
978-1-4673-2065-8
Electronic_ISBN :
0743-1546
DOI :
10.1109/CDC.2012.6426620
