在分析移动平均值(MA)校正机理的基础上, 本文分别利用补偿量和补偿量的移动平均值作为校正量对激光光束随机偏差进行校正。以光束传递系统中利用快速反射镜校正脉冲激光器自身漂移的过程为例, 介绍了利用移动平均值(MA)进行闭环控制的稳定光束的算法, 给出了两种校正量的仿真结果, 并对比加载地面抖动前后的校正效果。结果表明, 基于此原理的算法能很好的校正激光光束随机漂移, 最优处可将 MA值降至校正前的 1/15倍, 并且可以实现对光束随机漂移的实时控制, 具有实用性。其应用关键在于构造合适的调整量公式。

On the basis of analyzing Moving Average(MA) correction mechanism, random deviations of laser beams are adjusted with the compensation and the moving average of compensation in this paper. Take the progress of adjusting random deviations of pulse laser beams with fast steering mirrors in the beam delivery system as an example. Closed-loop control algorithms for beams stabilization based on MA are introduced. The simulation results are presented, and the correction effects with the ground vibrations or not are illustrated. The outcomes indicate that algorithms based on MA will control the random drifts effectively, which prove that the optimal MA can be reduced to 1/15 times. Meanwhile, these methods which can achieve real-time control are practical. The key of applications lies in construction of the appropriate correction formula.