Adaptive fuzzy control for SISO nonlinear time-delay systems

Author

Zifang, Qu ; Zhenbin, Du ; Zhaowei, Liu

Author_Institution

Shandong Inst. of Bus. & Technol., Yantai

fYear

2007

Firstpage

246

Lastpage

249

Abstract

This paper presents an adaptive fuzzy tracking control scheme for SISO nonlinear time-delay systems. The scheme organically synthesizes adaptive control and H_infin control. A kind of adaptive time-delay fuzzy logic systems is constructed and used to approximate the unknown time-delay functions. A H_infin compensator is designed to eliminate fuzzy approximation errors and external disturbances. The adjusting laws for parameters are derived by the tracking error. The Lyapunov function with time delays is constructed, and then it is proved that the error closed loop system satisfies the anticipant H_infin tracking performance. The simulation results demonstrate that the control scheme is feasible.

Keywords

Lyapunov methods; adaptive control; closed loop systems; delays; fuzzy control; nonlinear control systems; H_infin control; Lyapunov function; SISO nonlinear time-delay systems; adaptive fuzzy tracking control; adaptive time-delay fuzzy logic systems; error closed loop system; fuzzy approximation errors; Adaptive control; Approximation error; Control system synthesis; Control systems; Fuzzy control; Fuzzy logic; Fuzzy systems; Lyapunov method; Nonlinear control systems; Programmable control; SISO; fuzzy logic systems; nonlinear systems; time delays; tracking control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference, 2007. CCC 2007. Chinese

Conference_Location

Hunan

Print_ISBN

978-7-81124-055-9

Electronic_ISBN

978-7-900719-22-5

Type

conf

DOI

10.1109/CHICC.2006.4346780

Filename

4346780