For full-scale lunar explorations, it is essential to establish constant communication with the far side of the Moon. One idea to accomplish this is telecommunication via a satellite orbiting the L2 point. However, because orbits around the L2 point are unstable, active control is necessary. In this paper, we propose an orbital design and control laws for a combination of solar electric propulsion and a solar sail equipped with reflectivity control devices (RCDs). An artificial halo orbit that takes the solar radiation pressure into consideration is designed, and the modeling error is calculated. Feedback control laws to maintain the orbit are designed using a backstepping method. From the numerical simulations, it is shown that the utilization of RCDs reduces the fuel consumption required to maintain the orbit.
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