模糊PID控制的光束指向稳定系统

Fuzzy PID-controlled beam pointing stabilization system

激光束指向稳定技术通过控制激光束稳定输出,以实现对运动目标的瞄准,提高跟踪精度。基于单个快速反射镜(FSM)光束指向稳定原理,通过Zemax光学仿真,针对单个FSM光束指向不稳定的问题,建立基于双FSM的光束指向稳定模型,根据入射激光偏转角度的变化得到光斑移动轨迹;比较单、双FSM系统理论光束指向误差范围。为使FSM具有良好的跟踪能力,实现偏转角度的精确输出,基于模糊自适应比例-积分-微分(PID)控制进行仿真,通过与经典PID控制比较,模糊自适应PID控制器具有良好的鲁棒性,可以提高系统的动态性能和对目标的跟踪精度。

Laser beam pointing stabilization technology,aims at moving targets and improves tracking precision by controlling laser beam output.Based on the principle of single fast steering mirror(FSM)beam pointing stability,through Zemax optical simulation,aiming at the problem of single FSM beam pointing instability,a beam pointing stability model based on double FSM is established.According to the change of incident laser deflection angle,the spot moving trajectory is obtained;the theoretical beam pointing error range of single and double FSM systems is compared.In order to make the fast mirror have good tracking ability and realize the accurate output of deflection angle,the simulation is based on fuzzy adaptive proportion-integration-differentiation(PID)control.Compared with the classical PID control,the fuzzy adaptive PID controller has good robustness,which can improve the dynamic performance of the system and the tracking precision of the target.