Attitude Tracking Control Based on Adaptive Sliding Mode Technique with Double Closed Loop for Spacecraft Near Small Body

An adaptive sliding mode tracking control scheme with double closed loop is proposed for the spacecraft attitude tracking near the irregular small body in the presence of uncertainties and external disturbances. Firstly, the general formulation of the spacecraft equations of attitude motion near irr...

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Bibliographic Details
Published in2014 IEEE 17th International Conference on Computational Science and Engineering pp. 78 - 82
Main Authors Chunhui Liang, Yuanchun Li
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2014
Subjects
adaptive control
Angular velocity
Attitude control
attitude tracking
double closed loops sliding mode
Equations
irregular small body
Space vehicles
Tracking loops
Uncertainty
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Summary:An adaptive sliding mode tracking control scheme with double closed loop is proposed for the spacecraft attitude tracking near the irregular small body in the presence of uncertainties and external disturbances. Firstly, the general formulation of the spacecraft equations of attitude motion near irregular small body is derived considering the irregular gravity gradient torque. Then sliding mode laws are established both in an inner control loop and an outer control loop based on Lyapunov stability theory. The unknown upper bounds of the uncertainties and external disturbances are estimated through adaptive technique. The integral switch control is employed in the outer loop to track the attitude angles and resist the disturbances, and a dynamical sliding mode control approach is proposed in the inner loop to resist the disturbances and vibration. Finally, spacecraft Maneuvers near one small body are adopted for numerical simulation, and the results demonstrate the effectiveness of the proposed scheme.
DOI:10.1109/CSE.2014.48