基于模糊控制的参数自调节光纤章动耦合算法  

Parameter Self-Adjusting Nutation Fiber Coupling Algorithm Based on Fuzzy Control

作　　者：郭烽 高世杰[1] 刘永凯[1] 吴昊[1] 吕福睿 Guo Feng;Gao Shijie;Liu Yongkai;Wu Hao;LüFurui(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,Jilin,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《激光与光电子学进展》2024年第17期122-130,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11973041)。

摘　　要：针对空间激光通信单模光纤耦合系统中,传统激光章动算法参数固定,导致系统收敛速度与收敛稳定性无法兼得的问题,提出了一种基于模糊控制的参数自调节光纤章动耦合算法。该算法以快速反射镜(Fast steering mirror,FSM)为执行单元,根据实时耦合能量反馈值,在激光章动收敛过程中自调节算法参数,以提升系统的收敛速度与稳态精度。仿真结果表明:在无扰动条件下,参数自调节章动耦合算法的耦合效率、耦合精度、耦合速度均优于传统激光章动算法;在有扰动条件下,传统激光章动算法仅对一定条件下的扰动具有较好的抑制效果,参数自调节章动耦合算法对于1~20 Hz的扰动均有着较好的抑制效果,并且在耦合效率及耦合稳定性方面有着明显优势,更加适合应用于激光通信链路。In the single mode fiber coupling system of space laser communication,the parameters of the traditional laser nutation algorithm are fixed,which leads to the problem that the system convergence speed and convergence stability cannot be achieved at the same time.Therefore,a parameter self-adjusting nutation fiber coupling algorithm based on fuzzy control is proposed.The proposed algorithm uses a fast steering mirror(FSM)as the execution unit.According to real-time coupling energy feedback,the algorithm parameters are self-adjusted during the process of laser nutation convergence to improve the convergence speed and steady-state accuracy of the system.The simulation results show that the coupling efficiency,coupling precision and coupling speed of the parameter self-adjusting nutation coupling algorithm are better than those of the traditional laser nutation algorithm under the condition of no disturbance.Under the condition of disturbance,the traditional laser nutation algorithm only has a good suppression effect on the disturbance under certain conditions.However,the parameters of the self-adjusting nutation coupling algorithm have a good suppression effect on disturbances of 1-20 Hz,and the proposed method displays obvious advantages in terms of coupling efficiency and coupling stability.Hence,the proposed method is more suitable for application in laser communication links.

关 键 词：自由空间光通信 单模光纤耦合 激光章动 模糊控制 参数自调节 

分 类 号：TN249[电子电信—物理电子学]