高精度光纤陀螺检测电路串扰自检测研究  

Research on Crosstalk Auto Detection of High Precision Fiber Optic Gyroscope Detection Circuit

作　　者：蔡美芳[1] CAI Meifang(School of Artificial Intelligence,Nanchang Institute of Science and Technology,Nanchang Jiangxi 330038,China)

机构地区：[1]南昌工学院人工智能学院学院,江西南昌330038

出　　处：《电子器件》2023年第1期68-73,共6页Chinese Journal of Electron Devices

基　　金：江西省教育厅科学技术研究项目(GJJ191096)。

摘　　要：光纤陀螺检测电路应用过程中,受到自检测方案的影响,导致串扰故障检测所需测试矢量较多。因此,提出高精度光纤陀螺检测电路串扰自检测研究。分析光纤陀螺数字闭环检测原理,并提取检测电路串扰特征。根据闭环电路的连续信号微分方程,计算等效模拟输入转速。结合数字阶梯波算法,设计电路串扰检测方案。再计算地球自转角速率的分量测量死区,得到电路串扰测量结果。仿真结果表明:与嵌入式“反射器”的新型谐振陀螺仪和多导体传输线串扰不确定性问题的计算方法相比,当串扰故障覆盖率为80%,所提出的串扰自检测方法的矢量数量为46个,降低了自测试所需的成本。In the application of fiber optic gyro detection circuit,due to the influence of self detection scheme,there are many test vec-tors required for crosstalk fault detection.Therefore,a method of crosstalk self detection of high-precision fiber optic gyro detection cir-cuit is proposed.The digital closed-loop detection principle of fiber optic gyroscope is analyzed,and the crosstalk characteristics of the detection circuit are extracted.According to the continuous signal differential equation of the closed-loop circuit,the equivalent analog input speed is calculated.Combined with the digital step wave algorithm,the circuit crosstalk detection scheme is designed.The dead zone measurement result of the earth angle crosstalk component is obtained.The simulation results show that the number of vectors of the proposed crosstalk self detection method is 46,when the crosstalk fault coverage is 80%,compared with the calculation method of crosstalk uncertainty of embedded“reflector”new resonant gyroscope and multi conductor transmission line,which reduces the cost of self-test.

关 键 词：光纤陀螺 检测电路 串扰 数字闭环 数字阶梯波 死区测量 

分 类 号：V241.59[航空宇航科学与技术—飞行器设计]