光纤陀螺标度因数的自标定方法  

Self-calibration Method for FOG Scale Factor

作　　者：张思[1] 吴磊[1] 薛冰[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《压电与声光》2015年第5期830-832,843,共4页Piezoelectrics & Acoustooptics

基　　金：黑龙江省青年科学基金资助项目(QC2013C069)

摘　　要：基于数字闭环光纤陀螺的阶梯波调制原理,该文提出了一种光纤陀螺标度因数的自标定方法,旨在提高光纤陀螺的标定效率。在陀螺的数字信号处理部分即现场可编程门阵列(FPGA)上加入等幅度递增的数字阶梯波信号,通过Y波导改变两光之间的相位差,用这种方法模拟转台角速度的输入,静基座条件下即可拟合标度因数及计算其非线性误差。通过实验验证了光纤陀螺的自标定方法的可行性,并对其适用范围进行研究。Based on the principle of ladder wave modulation of digital FOG,a self-calibration method of scale factor aimed at improving the efficiency of fiber optic gyro calibration was proposed.The equal amplitude increased digital ladder wave signal was added into the digital signal processing section of gyro FPGA.The difference of phase between the two light was changed by Y waveguide.Then the angular velocity of the input of turntable was simulated to fit the scale factor and calculate the nonlinearity error under the static conditions.Test result verified the feasibility of the self-calibration of fiber optic gyro and its application scope was also studied.

关 键 词：阶梯波调制 自标定 分立式标定 闭环工作 光纤陀螺 

分 类 号：TN911.3[电子电信—通信与信息系统] U666.123[电子电信—信息与通信工程]