Title :
Time-varying exponential stabilization of a rigid spacecraft with two control torques
Author :
Morin, P. ; Samson, C.
Author_Institution :
INRIA, Sophia Antipolis, France
fDate :
4/1/1997 12:00:00 AM
Abstract :
Rigid body models with two controls cannot be locally asymptotically stabilized by continuous feedbacks which are functions of the state only. This impossibility no longer holds when the feedback is also a function of time, and time-varying asymptotically stabilizing feedbacks have already been proposed. However, due to the smoothness of the feedbacks, the convergence rate is only polynomial. In this paper, exponential convergence is obtained by considering time-varying feedbacks which are only continuous
Keywords :
aerospace control; asymptotic stability; convergence; feedback; space vehicles; time-varying systems; convergence rate; exponential convergence; rigid body models; rigid spacecraft; smoothness; time-varying exponential stabilization; time-varying feedbacks; Asymptotic stability; Attitude control; Control systems; Convergence; Equations; Polynomials; Space vehicles; State feedback; Time varying systems; Torque control;
Journal_Title :
Automatic Control, IEEE Transactions on
