无线激光通信线性自抗扰控制研究与实验

Research and experiment of linear auto disturbance rejection control for free space optical communication

针对无线激光通信系统的粗跟踪控制技术难点,设计了串级粗跟踪控制结构,引入了线性自抗扰控制器,采用线性扩张状态观测器观测系统的总扰动,并进行了模拟动态跟踪实验,对比在0. 5Hz、1Hz和2Hz扰动下,线性自抗扰控制器和比例积分微分控制器的控制误差。实验结果表明线性自抗扰控制器具有更高的控制精度和更好的稳定性。

Aiming at the difficulty of the coarse tracking control technology of free space optical communication system,a cascade coarse tracking control structure is designed.A linear auto disturbance rejection controller is introduced,and the linear extended state observer is used to observe the total disturbance of the system.The simulated dynamic tracking experiment is carried out to compare the control errors of the linear auto disturbance rejection controller and the proportional integral differential controller under the disturbances of 0.5 Hz,1 Hz and 2 Hz.The experimental results show that the linear auto disturbance rejection controller has higher control precision and better stability.