Variable Structure Control for Flexible Spacecraft

Author

Guang-Xing Li ; Jun Zhou ; Feng-Qi Zhou

Author_Institution

Coll. of Astronaut., Northwestern Polytech. Univ., Xi´an, China

fYear

2006

fDate

7-11 Aug. 2006

Firstpage

943

Lastpage

946

Abstract

This paper focuses on designing control system to improve attitude control accuracy in the presence of mass parameter uncertainties and disturbances. The control algorithm based on variable structure control is obtained by Lyapunov stability theory and have the following properties: 1) computational simplicity and tuning on line, 2) high attitude control accuracy in the presence of bounded external disturbances and parameter uncertainty. Stability of close-loop system is analyzed based on Lyapunov equation and the properties of the quaternion representation of spacecraft dynamics. These stability conditions serve as constrains imposed on the parameter of controller. Simulation results show the good attitude stable characteristics of proposed control.

Keywords

Lyapunov methods; aircraft control; attitude control; closed loop systems; flexible structures; space vehicles; stability; uncertain systems; variable structure systems; Lyapunov equation and; Lyapunov stability theory; attitude control; close-loop system stability; control system design; flexible spacecraft; mass parameter disturbances; mass parameter uncertainties; quaternion representation; spacecraft dynamics; variable structure control; Aerodynamics; Attitude control; Control systems; Equations; Lyapunov method; Space vehicles; Stability; Torque control; Uncertain systems; Weight control; Attitude Control; Flexible Spacecraft; Variable Structure Control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference, 2006. CCC 2006. Chinese

Conference_Location

Harbin

Print_ISBN

7-81077-802-1

Type

conf

DOI

10.1109/CHICC.2006.280813

Filename

4060666