窄脉冲激光器驱动电路延时反馈控制研究  

Research on delay feedback control of narrow pulse laser driver circuit

作　　者：王婷[1] 魏明[1] 宋巍 WANG Ting;WEI Ming;SONG Wei(Applied Technology College,Soochow University,Suzhou Jiangsu 215325,China)

机构地区：[1]苏州大学应用技术学院,江苏苏州215325

出　　处：《激光杂志》2024年第12期40-44,共5页Laser Journal

基　　金：江苏省高等学校基础科学项目名称(No.23KJD430010)。

摘　　要：在窄脉冲激光器驱动电路中,收发天线以双极化模式运作,受到非理想因素影响,使源信号的极化方向容易在信号传输过程中部分转移到其他极化方向上,导致出现极化干扰,引入非期望的干扰信号,降低控制过程的稳定性。为此,提出一种窄脉冲激光器驱动电路延时反馈控制方法。通过交叉极化隔离度描述信号功率与交叉极化干扰之比,量化干扰大小,采用盲源分离法还原源信号,利用峭度函数确定最佳步长,从多个独立分量中提取非零峭度的信号作为源信号,实现干扰信号的抑制。在窄脉冲激光器驱动电路中组建离散正交虚拟电路,计算实际电压电流正交的虚拟分量并展开反馈,实现窄脉冲激光器驱动电路延时反馈控制。实验结果表明,所提方法具有良好的稳定性,可以获取更加满意的窄脉冲激光器驱动电路延时反馈控制结果。In the narrow pulse laser driving circuit,the transmitting and receiving antennas operate in dual polarization mode,which is affected by non ideal factors,making it easy for the polarization direction of the source signal to partially transfer to other polarization directions during signal transmission,resulting in polarization interference and introducing unexpected interference signals,reducing the stability of the control process.Therefore,a delay feedback control method for narrow pulse laser driving circuit is proposed.By describing the ratio of signal power to cross polarization interference through cross polarization isolation,quantifying the interference size,using blind source separation to restore the source signal,using kurtosis function to determine the optimal step size,extracting non zero kurtosis signals from multiple independent components as source signals,and achieving interference signal suppression.Construct a discrete orthogonal virtual circuit in the driving circuit of a narrow pulse laser,calculate the virtual components of the actual voltage and current orthogonal and unfold feedback to achieve delayed feedback control of the narrow pulse laser driving circuit.The experimental results show that the proposed method has good stability and can obtain more satisfactory delay feedback control results for narrow pulse laser driving circuits.

关 键 词：窄脉冲激光器 驱动电路 延时反馈控制 代价函数 最优步长 

分 类 号：TN710[电子电信—电路与系统]