空间组网光通信粗跟踪系统的模型预测控制  

Model predictive control for coarse tracking system of optical communication in space network

作　　者：张凯强 张立中[1,2] 白杨杨[1,2] 孟立新[1,2] 张暾 范涛 ZHANG Kaiqiang;ZHANG Lizhong;BAI Yangyang;MENG Lixin;ZHANG Tun;FAN Tao(College of Mechatronic Engineering Changchun Unipersity of Science and Technology,Changchun 130022,China;Key Laboratory of Air-to-ground Laser Commmnication and National Defense,Changchun Unitersiry of Scierceand Technology,Changchun 130022,China)

机构地区：[1]长春理工大学机电工程学院,长春130022 [2]长春理工大学空地激光通信国防重点实验室,长春130022

出　　处：《激光杂志》2022年第5期17-22,共6页Laser Journal

基　　金：吉林省教育厅科学技术研究项目(No.JJKH20210836KJ)。

摘　　要：针对一对多组网光通信粗跟踪伺服控制系统,通过解析法和正弦扫频辨识建立了粗跟踪系统的模型,然后依据数学模型设计了模型预测控制器(MPC),进行了与比例-积分-微分(PID)控制器的对照实验。实验结果表明MPC控制器能以10μrad的误差跟踪0.1 Hz的正弦信号,跟踪精度是PID控制器的两倍。在叠加了50 Hz,幅值1.8 m随机噪声的情况下,MPC控制器的最大稳态跟踪误差为55μrad,只有PID控制器最大稳态跟踪误差的一半。并且在运动平台的粗跟踪实验中,MPC控制器的稳态误差最大为15μrad,PID控制器的稳态误差最大为25μrad。表明MPC控制器可以有效提高一对多光通信粗跟踪控制效果。Aiming at one-to-many network optical communication coarse tracking servo control system,this paper establishes a coarse tracking system model through analytical method and sine sweep frequency identification,and then designs a model predictive controller( MPC) based on mathematical model,and carries out the proportional-Integral-derivative( PID) controller control experiment. Experimental results show that the MPC controller can track a 0. 1 Hz sinusoidal signal with an error of 10,and the tracking accuracy is twice that of the PID controller. In the case of superimposed random noise of 50 Hz and amplitude 1. 8 m,the maximum steady-state tracking error of the MPC controller is 55,which is only half of the maximum steady-state tracking error of the PID controller. And in the coarse tracking experiment of motion platform,the maximum steady-state error of the MPC controller is 15,and the maximum steady-state error of the PID controller is 25. It shows that the MPC controller can effectively improve the coarse tracking control effect of one-to-many optical communication.

关 键 词：光通信 组网 激光通信 粗跟踪 模型预测控制 

分 类 号：TN249[电子电信—物理电子学]