Adaptive Wavelet Network Friction Compensation of Inter-Satellite Optical Communication Coarse Pointing Subsystem

Author

Song, Shenmin ; Song, Zhuoyi ; Zhang, Bintong ; Duan, Guangren

Author_Institution

Dept. of control Sci. & Eng., Harbin Inst. of Technol.

Volume

1

fYear

0

Firstpage

2768

Lastpage

2772

Abstract

In order to compensate for the effects of friction in IOC (inter-satellite optical communication) coarse pointing subsystem of PAT (pointing, acquisition, tracking) system, a PD controller is used to obtain a stable trajectory first, then wavelet neural network is used to approximate friction function on line to compensate for it. In addition, a robust term is used to eliminate the effects of approximation error of neural network and external disturbances. The system is proved to be stable and the parameters are proved to be bounded under the control scheme of this paper, using Lyapunov function methods. At last, simulation results show the validity of the control scheme

Keywords

Lyapunov methods; PD control; artificial satellites; compensation; function approximation; neurocontrollers; optical communication; pointing systems; position control; robust control; wavelet transforms; Lyapunov function methods; PD controller; acquisition system; adaptive wavelet network friction compensation; friction function approximation; intersatellite optical communication; pointing subsystem; pointing system; robust control; stability; tracking system; trajectory; wavelet neural network; Adaptive systems; Communication system control; Control systems; Friction; Neural networks; Optical control; Optical fiber communication; PD control; Robustness; Trajectory; IOC; PAT; friction compensation; wavelet neural network;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on

Print_ISBN

1-4244-0332-4

Type

conf

DOI

10.1109/WCICA.2006.1712868

Filename

1712868