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根据BUAASAT微小卫星的姿态控制要求,提出了基于磁力矩器的滑模变结构控制方法,实现了微小卫星三轴姿态稳定。首先根据卫星模型设计滑模变结构控制律,然后结合磁力矩产生的原理设计实际控制力矩,最后进行算法仿真。仿真表明,利用磁力矩器实现微小卫星变结构控制,抗干扰能力强,磁力矩器最大磁矩小,有利于降低成本,提高控制精度。
According to the attitude control requirements of BUAASAT micro-satellites, a sliding mode control method based on the magnetic torque converter is proposed, which realizes the stability of three-axis micro-satellite attitude. First, the sliding mode variable structure control law is designed according to the satellite model, and then the actual control torque is designed according to the principle of magnetic moment generation. Finally, the algorithm simulation is carried out. Simulation shows that the use of magnetic torque converter to achieve micro-satellite variable structure control, anti-interference ability, the maximum magnetic moment of magnetic torque is small, help to reduce costs and improve control accuracy.