Publisher： Edp Sciences
E-ISSN： 2261-236x|198|issue|06003-06003
ISSN： 2261-236x
Source： MATEC Web of conference, Vol.198, Iss.issue, 2018-09, pp. : 06003-06003
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Abstract
This paper investigates the non-linear relative kinetic model of the collinear 4-craft Coulomb formation in geostationary orbit. Considering the fact that the formation remains statically fixed in the radial direction, using the equilibrium conditions to linearize the dynamic model. To keep the radial static stability of the collinear 4-craft Coulomb formation, the LQR controller is designed based on the linear dynamic model, taking the Coulomb force as the only control force. Considering the unmodeled disturbance force and the model error, the improved LQR control law is designed to improve the robustness of the traditional LQR controller. Simulation is executed by Matlab/Simulink, and numerical simulation results demonstrate the effectiveness of the dynamic model and the proposed control strategy.
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