ScholarWorks@숙명여자대학교

초록

This paper presents an integrated attitude control strategy for a one-degree-of-freedom(1-DoF) CubeSat, combining energy-based control and Linear Quadratic Regulator(LQR). To ensure the successful completion of satellite missions in space, the ground-based test is essential. For this purpose, the motion of both the mission-performing satellite and its target objects, such as in docking or debris removal scenarios, has to be represented under microgravity conditions. Therefore, 1-DoF CubeSat with a reaction wheel is utilized to execute and sustain a designated attitude. To achieve the swing-up of CubeSat to a target position, the energy-based controller is employed, and the system's stability is analyzed using passivity theory. In addition, the LQR controller is applied for stabilization, and a switching condition is proposed to integrate both control strategies. In order to validate the effectiveness of the proposed strategies, simulations for 1-DoF CubeSat system are conducted.

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