Title :
An observer for nonlinear systems based on H∞-filtering techniques
Author :
Reif, Konrad ; Sonnemann, Frank ; Yaz, Engin ; Unbehauen, Rolf
Author_Institution :
Lehrstuhl fur Allgemeine und Theor. Elektrotech., Erlangen-Nurnberg Univ., Germany
Abstract :
An observer is introduced for state estimation of nonlinear deterministic systems. The observer gain is computed by a Riccati differential equation similar to the extended Kalman filter. The modification of the Riccati differential equation for the proposed observer is based on the application of H∞-filtering and robust control methods, which allows an effective treatment of the nonlinearities. Thus, the high performance of the extended Kalman filter can be further improved
Keywords :
Kalman filters; Riccati equations; differential equations; nonlinear systems; observers; robust control; H∞-filtering techniques; Riccati differential equation; extended Kalman filter; nonlinear deterministic systems; nonlinearities; observer; robust control methods; state estimation; Convergence; Differential equations; Linear approximation; Nonlinear systems; Observers; Riccati equations; Robust control; Stability; State estimation; Uncertainty;
Conference_Titel :
American Control Conference, 1997. Proceedings of the 1997
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-3832-4
DOI :
10.1109/ACC.1997.609115
