Title :
Adaptive quantized control for nonlinear uncertain systems
Author :
Hayakawa, Tomohisa ; Ishii, Hideaki ; Tsumura, Koji
Author_Institution :
Dept. of Mech. & Environ. Informatics, Tokyo Inst. of Technol.
Abstract :
A direct adaptive control framework for nonlinear uncertain systems with input quantizers is developed. The proposed framework is Lyapunov-based and guarantees ultimate boundedness (practical stability) of the closed-loop system. Specifically, the input quantizers are logarithmic and characterized by sector-bound conditions with the conic sector adjusted at each time instant by the adaptive controller in conjunction with the system response. Furthermore, for practical reasons we assume that the input logarithmic quantizers have deadzone around zero control input. Finally, a numerical example is provided to demonstrate the efficacy of the proposed approach
Keywords :
Lyapunov methods; adaptive control; closed loop systems; nonlinear control systems; uncertain systems; Lyapunov-based framework; adaptive quantized control; closed-loop system; input logarithmic quantizers; nonlinear uncertain systems; Adaptive control; Bandwidth; Communication system control; Control systems; Decoding; Nonlinear control systems; Programmable control; Quantization; Uncertain systems; Uncertainty;
Conference_Titel :
American Control Conference, 2006
Conference_Location :
Minneapolis, MN
Print_ISBN :
1-4244-0209-3
Electronic_ISBN :
1-4244-0209-3
DOI :
10.1109/ACC.2006.1656632