星地量子通信平台振动的主动控制研究  

Active Vibration Control for Satellite-Earth Quantum Communication Platform

作　　者：路璐[1,2,3] 钟红恩[3] 

机构地区：[1]中国科学院光电研究院,北京100094 [2]中国科学院大学,北京100190 [3]中国科学院空间应用工程与技术中心,北京100094

出　　处：《计算机仿真》2014年第1期190-194,共5页Computer Simulation

基　　金：中国科学院知识创新工程重大项目(KGGX1-YW-24)

摘　　要：在星地通信性能优化问题的研究中,跟瞄精度是星地量子通信跟踪伺服系统的关键参数。星载平台的扰动是跟踪伺服系统的重要干扰源,影响跟瞄精度。通过对星地量子通信系统分析,建立了星上跟踪伺服系统及平台振动的仿真模型。在上述模型的基础上,给出了传统的比例积分(PI)控制算法及改进的PI与归一化自适应滤波相结合的复合控制算法,对二者的振动主动抑制能力及收敛性进行了仿真分析。结果表明:PI控制对宽带扰动控制能力较强,而归一化自适应滤波对窄带扰动控制能力较强,二者复合控制下对宽带和窄带扰动都有较强的抑制能力,其中窄带振动抑制能力提高20dB,总的跟瞄精度达到5μrad以内,为星地通信优化提供了依据。Tracking error is a critical parameter in quantum communication tracking servo system. The vibration of satellite-borne platform is the important source of the disturbance for tracking servo system. Aiming at satellite to earth quantum communication system, a tracking servo system and platform vibration simulation model onside satellite terminal were established. Based on this model, the traditional PI control algorithm and composite control algorithm that combined the PI and normalized adaptive filtering control algorithm were given, both active vibration suppression ability and convergence were analyzed. Analysis and simulation results show that： the PI control can suppress the broadband disturbance, and the normalized adaptive filtering can suppress narrowband disturbance, so the composite control is able to suppress both broadband and narrowband disturbance, in which narrowband vibration suppression capability improved 20dB, and total tracking accuracy reached below 5 μrad.

关 键 词：量子通信 平台振动 伺服系统 归一化自适应 跟瞄精度 

分 类 号：R448.253[医药卫生—诊断学]