卫星光通信粗瞄系统双绕组电机模糊滑模控制

Fuzzy sliding mode control of electric motor with dual windings in coarse pointing system of inter-satellite optical communication

为了提高卫星光通信粗瞄控制电机的可靠性,应用了双绕组无刷直流电机;再利用Stribeck摩擦模型,分析了粗瞄系统的摩擦干扰;在此基础上,设计了模糊滑模控制器来消除摩擦力矩的扰动。最后通过仿真实验,验证了该控制策略的有效性,可以保证粗瞄系统的动态响应及精度要求。

To raise the reliability of electric motors in coarse pointing system of inter-satellite optical communication, a brushless electric motor with dual windings is employed. The friction interference of coarse pointing system is analyzed by using the stribeck model. On this basis a fuzzy sliding mode controller is designed to erase the disturbance of friction torque. Finally, simulation results show that the control strategy is feasible and effective, and achieves fast dynamic response and high precision of the coarse pointing system.