机载激光通信的重复自抗扰视轴稳定控制

机载激光通信的视轴稳定是建立激光通信链路的前提。针对通信终端载体的非线性扰动和扰动模型未知造成视轴稳态误差较大的问题,结合自抗扰控制与重复控制,提出了重复控制补偿自抗扰算法,以完全消除周期性稳态跟踪误差。仿真实验结果表明,与自适应PID控制方法相比,重复控制补偿自抗扰算法可以有效抑制平台的非线性扰动,提高了系统的稳态精度,并且具有较快的响应速度与较强的鲁棒性。

Active disturbance rejection control of optical axis for airborne laser communication system

The premise of the laser communication link establishment is the optical axis stabilization in airborne laser communication. In view of the greater optical axis stabilization error caused by the nonlinear perturbation of the communication terminal carriers and the unknown perturbation model,combined active disturbance rejection control and repetitive control,the active disturbance rejection algorithm compensated by repetitive control was proposed to completely eliminate the periodic steady-state tracking error. Compared with the adaptive PID control method,the simulation results show that the active disturbance rejection algorithm compensated by repetitive control can effectively restrain the nonlinear disturbance of the platform,improve the system steady-state accuracy and has faster response speed and stronger robustness.