Title :
Stabilization of the attitude of a rigid spacecraft with external disturbances using finite-time control techniques
Author :
Ding, Shihong ; Li, Shihua
Author_Institution :
Southeast Univ., Nanjing
Abstract :
In this paper, we discuss the classical problem of attitude stabilization for a rigid spacecraft with external disturbances. Almost all the control laws for attitude stabilization problem in the literature can only guarantee at best exponential convergence of the attitude with infinite settling time. We employ finite-time control techniques including terminal sliding mode approach and continuous finite-time control approach to develop feedback control laws for stabilizing spacecraft attitude in terms of Rodrigues parameters. The attitude of the rigid spacecraft will be stabilized to the origin in finite time in the absence of disturbances and a small region of the origin in the presence of disturbances. Rigorous proof is given. Numerical simulation results show the effectiveness of the method.
Keywords :
attitude control; continuous time systems; feedback; stability; variable structure systems; attitude stabilization; continuous finite-time control approach; feedback control; rigid spacecraft; terminal sliding mode approach; Attitude control; Automatic control; Control systems; Convergence; Linear feedback control systems; Nonlinear control systems; Optimal control; Robust control; Sliding mode control; Space vehicles;
Conference_Titel :
American Control Conference, 2007. ACC '07
Conference_Location :
New York, NY
Print_ISBN :
1-4244-0988-8
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2007.4282259