Title :
Robustly stable fuzzy controller for uncertain nonlinear systems with unknown input gain sign
Author :
Park, Jang-hyun ; Huh, Sung-Hoe ; Yoon, Pil-Sang ; Park, Gwi-Tae
Author_Institution :
Sch. of Electr. Eng., Korea Univ., Seoul, South Korea
fDate :
6/24/1905 12:00:00 AM
Abstract :
We propose and analyze a robust adaptive fuzzy controller for uncertain nonlinear systems without information on the input gain sign. The proposed scheme completely overcomes the singularity problem which occurs in the indirect adaptive feedback linearizing control. No projection in the estimated parameters and no switching in the control input are needed. The stability of the closed-loop system is guaranteed in the Lyapunov viewpoint
Keywords :
Lyapunov methods; adaptive control; closed loop systems; feedback; fuzzy control; linearisation techniques; nonlinear control systems; robust control; uncertain systems; Lyapunov stability; closed-loop system; indirect adaptive feedback linearizing control; robust adaptive fuzzy controller; robustly stable fuzzy controller; singularity problem; uncertain nonlinear systems; unknown input gain sign; Adaptive control; Control systems; Feedback; Fuzzy control; Fuzzy systems; Information analysis; Nonlinear control systems; Nonlinear systems; Programmable control; Robust control;
Conference_Titel :
Fuzzy Systems, 2002. FUZZ-IEEE'02. Proceedings of the 2002 IEEE International Conference on
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-7280-8
DOI :
10.1109/FUZZ.2002.1005067
