机载光电探测系统二级稳定控制分析

Analysis of two-stage stabilization control based on airborne electro-optical detection system

采用一种粗精二级稳定的新方法用于对机载光电探测系统视轴及图像进行高精度稳定。该方法的重要特征是采用快反镜和二级稳定控制来获取高工作带宽和对扰动的大幅度衰减。通过基于控制模型和扰动传递函数的建立,理论分析了二级稳定控制的补偿依据。通过仿真结果显示,二级稳定控制可有效提升系统稳定精度,达到设计指标要求。

In this paper,a new scheme of coarse/fine two-stage stabilization method is adopted to stabilize the optical axis and image of airborne electro-optical detection system with high precision.The method is characterized by FSM mirror and two stage stability control to obtain high loop bandwidth and large attenuation of disturbance.Based on the control model and the disturbance transfer function,the compensation basis of the two-stage stabilization control is analyzed theoretically.The simulation results show that the two-stage stabilization control can effectively improve the stability accuracy of the system and meet the design target requirements.