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本文针对高轨卫星无法使用磁控实现速率阻尼和太阳捕获的情况,提出了一种无角速率信息的仅使用太阳敏感器作为输入的速率阻尼及太阳捕获的新方法。文中从能量角度和李雅谱诺夫函数出发,建立了仅利用太阳矢量的速率阻尼及太阳捕获控制律,该控制律能使卫星本体的任意方向指向太阳并能有效地维持对日定向,从而确保了卫星进入安全模式且星上惯性测量部件故障时,太阳电池阵指向太阳,保证整星能量得到充足供应,确保了卫星的安全。该方法简单,工程实现性强。算例仿真结果表明,该控制律稳定有效,为未来的工程应用提供了强有力的理论依据。
Aiming at the situation that high-orbit satellites can not use magnetic control to achieve the rate damping and solar capture, a new method of rate damping and solar capture using only sun sensor as input without angular rate information is proposed in this paper. Starting from the energy point of view and Lyapunov function, the paper establishes the rate damping and solar capture control law using only the solar vector. The control law can make the satellite body point to the sun in any direction and can effectively maintain the orientation to Japan. To ensure that the satellite into safe mode and inertial measurement of satellite components failure, the solar array points to the sun, to ensure adequate supply of energy satellite, to ensure the safety of the satellite. The method is simple, engineering and strong. The simulation results show that the control law is stable and effective, which provides a powerful theoretical basis for the future engineering application.