基于两级高速倾斜镜闭环控制的光束稳定技术研究

发布时间：2018-04-04 19:36

本文选题：激光光学　切入点：光束稳定　出处：《光学学报》2016年12期

【摘要】：在光束稳定系统中,受到传输介质和平台振动等因素的影响,通常同时存在能量与频率成反比特性的宽带扰动和平台机械谐振引起的在某个特定频率点出现的窄带扰动。为了解决光束稳定系统中由大幅度、高频率窄带扰动和宽带扰动引起光束抖动的问题,设计了基于两级高速倾斜镜串联控制的光束稳定系统,提出了利用前级光束稳定系统校正窄带扰动,后级光束稳定系统校正宽带扰动的控制算法,实现了对大幅度高频率窄带扰动和宽带扰动的同时抑制。在相同条件下,对比了传统的控制方法和两级高速倾斜镜联合校正控制系统的残余误差。仿真和实验表明,提出的系统结构和控制方法能够有效地抑制光束稳定系统中存在的扰动。
[Abstract]:In beam stabilization systems, due to the influence of transmission medium and platform vibration, there is usually broadband disturbance with inverse ratio of energy to frequency and narrow-band perturbation at a particular frequency caused by mechanical resonance of the platform.In order to solve the problem of beam jitter caused by large amplitude, high frequency narrow band disturbance and wide band disturbance in beam stabilization system, a beam stabilization system based on two stage high speed tilting mirror series control is designed.A control algorithm is proposed to correct the narrow-band disturbance by using the pre-beam stabilization system and the wideband disturbance correction by the post-stage beam stabilization system, which can suppress both the narrow-band disturbance and the wideband disturbance with large amplitude and high frequency.Under the same conditions, the residual errors of the traditional control method and the two-stage high speed tilt mirror combined correction control system are compared.Simulation and experiments show that the proposed system structure and control method can effectively suppress the disturbance in the beam stabilization system.
【作者单位】：中国科学院自适应光学重点实验室;中国科学院光电技术研究所;中国科学院大学;
【分类号】：O43;TH74

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