空间激光通信组网单光束跟踪子系统

发布时间：2018-03-17 06:02

  本文选题：激光通信组网　切入点：光束控制　出处：《光学精密工程》2014年12期 　论文类型：期刊论文

【摘要】：介绍了用于一对多激光通信组网控制系统的光斑跟踪闭环系统。在伺服转台位置闭环的基础上,讨论以CCD相机为敏感器,以二维伺服转台为执行器的光闭环系统。介绍了跟踪系统的数学原理,研究了光闭环各环节的静态动态误差及开环闭环响应。在理论计算和数学仿真后,编写了闭环跟踪程序。采用经典PID控制与前馈相结合的控制算法,进一步提高了伺服带宽,保证了系统的稳定性。对星间激光通信的光斑位置进行了跟踪试验,结果显示跟踪误差为3σ≈136μrad,基本符合空间激光通信组网系统激光束的指向要求。得到的结果验证了控制策略的可行性,为多光束伺服打下了基础。
[Abstract]:The spot tracking closed-loop system for one-to-many laser communication network control system is introduced. Based on the closed loop of servo turntable position, the CCD camera is used as the sensor. This paper introduces the mathematical principle of the tracking system, studies the static dynamic error of each link of the optical closed loop and the open-loop closed-loop response. After theoretical calculation and mathematical simulation, the optical closed-loop system is used as the actuator. The closed-loop tracking program is written. The classical PID control combined with feedforward control algorithm is used to further improve the servo bandwidth and ensure the stability of the system. The tracking experiment of spot position of intersatellite laser communication is carried out. The results show that the tracking error is 3 蟽 鈮，

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