基于FPGA的光纤陀螺本征频率自动测量  

Automatic measurement of fiber optic gyroscope frequency based on FPGA

作　　者：高辉 马家君 徐榆鑫 白仕才 徐文正 孟鋆 GAO Hui;MA Jiajun;XU Yuxin;BAI Shicai;XU Wenzheng;MENG Jun(College of Big Data and Information Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学大数据与信息工程学院,贵阳550025

出　　处：《智能计算机与应用》2024年第5期126-129,共4页Intelligent Computer and Applications

基　　金：国家自然科学基金(62163006,61605153);贵州省科技厅自然科学基础研究计划(黔科合LH字[2017]7224号);贵州省教育厅青年科技人才成长项目(黔教合KY字[2017]107)。

摘　　要：为实现光纤陀螺本征频率的高精度自动测量,本文基于FPGA提出了一种本征频率自动测量算法。理论研究了方波调制信号与光强信号之间的关系,获得了光纤陀螺本征频率测量误差信号,根据自动控制原理,通过闭环测量系统将本征频率测量误差信号积分进而实时跟踪光纤陀螺本征频率,当测量误差信号为0,方波调制频率即为光纤陀螺本征频率。实验结果表明,该算法可以实现光纤陀螺本征频率的高精度自动测量。与其他算法相比,本文提出的算法测量精度达到1 Hz,具有高精度、速度快、易实现等优点。In order to realize the high-precision automatic measurement of the eigen frequency of fiber optic gyroscope,this paper proposes the measurement method of eigen frequency based on FPGA.The relationship between the square wave modulation signal and the light intensity signal is theoretically studied,and the measurement error signal of the eigen frequency of the fiber optic gyroscope is obtained.According to the principle of automatic control,the eigen frequency measurement error signal is integrated by the closed-loop measurement system to track the eigen frequency of the fiber optic gyroscope in real time.When the measurement error signal is zero,the square wave modulation frequency is the eigen frequency of the fiber optic gyroscope.The experimental results show that this method can realize the high-precision automatic measurement of the eigen frequency of the fiber optic gyroscope.Compared with other methods,the measurement accuracy of the method proposed in this paper reaches 1 Hz,which has the advantages of high-precision,fast speed and easy to implement.

关 键 词：光纤光学 光纤陀螺 频率跟踪 本征频率 

分 类 号：TN248[电子电信—物理电子学]