[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5139/IJASS.2003.4.1.099

Three-axis Attitude Control for Flexible Spacecraft by Lyapunov Approach under Gravity Potential

Bang, Hyo-Choong (Division of Aerospace Engineering Korea Advanced Institute of Science and Technology)
Lee, Kwang-Hyun (Division of Aerospace Engineering Korea Advanced Institute of Science and Technology)
Lim, Hyung-Chul (Division of Aerospace Engineering Korea Advanced Institute of Science and Technology)

Publication Information

International Journal of Aeronautical and Space Sciences / v.4, no.1, 2003 , pp. 99-109 More about this Journal

Abstract

Attitude control law synthesis for the three-axis attitude maneuver of a flexible spacecraft model is presented in this study. The basic idea is motivated by previous works for the extension into a more general case. The new case includes gravitational gradient torque which has significant effect on a wide range of low earth orbit missions. As the first step, the fully nonlinear dynamic equations of motion are derived including gravitational gradient. The control law design based upon the Lyapunov approach is attempted. The Lyapunov function consists of a weighted combination of system kinetic and potential energy. Then, a set of stabilizing control law is derived from the basic Lyapunov stability theory. The new control law is therefore in a general form partially validating the previous work in some sense.

Keywords

Attitude control; flexible spacecraft; Lyapunov function; output feedback; three-axis attitude dynamics;

Citations & Related Records

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