Title :
Robust attitude stabilization of spacecraft using nonlinear quaternion feedback
Author :
Joshi, S.M. ; Kelkar, A.G. ; Wen, J.T.-Y.
Author_Institution :
Div. of Flight Dynamics & Control, NASA Langley Res. Center, Hampton, VA, USA
fDate :
10/1/1995 12:00:00 AM
Abstract :
This paper considers the problem of three-axis attitude stabilization of a rigid spacecraft. A nonlinear control law which uses the feedback of the unit quaternion and the measured angular velocities is proposed and is shown to provide global asymptotic stability. The control law does not require the knowledge of the system parameters and is, therefore, robust to modeling errors. The significance of the control law is that it can be used for large-angle maneuvers with guaranteed stability
Keywords :
aerospace control; asymptotic stability; attitude control; feedback; nonlinear control systems; robust control; angular velocities; global asymptotic stability; guaranteed stability; large-angle maneuvers; nonlinear control law; nonlinear quaternion feedback; rigid spacecraft; robust attitude stabilization; three-axis attitude stabilization; Angular velocity; Angular velocity control; Asymptotic stability; Error correction; Feedback; Quaternions; Robust control; Robustness; Space vehicles; Velocity measurement;
Journal_Title :
Automatic Control, IEEE Transactions on
