Real-time dynamic simulation of angular velocity and suppression of dead zone in IFOG

Real-time dynamic simulation of angular velocity and suppression of dead zone in IFOG
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IFOG中角速度实时动态模拟及死区抑制

DOI:
10.1007/s10043-015-0046-0
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发表时间:
2015-02
期刊:
影响因子:
1.2
通讯作者:
Jinwen Luan
Jinwen Luan
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Hong Gu;Yunpeng Huan;Ansu Wang;Jinwen Luan

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从理论上分析了闭环光纤陀螺死区产生的机理。对光纤陀螺仪的数字闭环传递模型进行了修正,并在正向通道中加入了探测器输出信号中反馈通道的电子交叉耦合干扰。利用该模型,实现了对盲区的实时动态仿真。仿真结果与实验结果基本一致。在消除电子交叉耦合之前,高精度光纤陀螺的死区约为,而中精度光纤陀螺的死区约为。修改调制器电路板后,IFOG的死区和噪声在同一数量级,分别优于和。
The mechanism of the dead zone in closed-loop IFOGs is theoretically analyzed. The digital closed-loop transfer model for fiber-optic gyroscope is modified and the electronic cross-coupling interference from the feedback channel in the output signal of the detector in the forward channel is added. Using this model, we achieve a real-time dynamic simulation for the dead zone. The simulation results are basically consistent with experiment results. Before the electronic cross-coupling has been eliminated, the dead zone of the high-precision fiber-optic gyro is about, while the medium precision fiber-optic gyro is. After modifying the modulator circuit boards, the dead zone and the noise of the IFOG are of the same order of magnitude, better thanand, respectively.
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