Eigen frequency measurements of a fiber optic gyroscope based on a staircase waveform with large temperature range

Zhu Xunmin; Chen Xingfan; Shu Xiaowu; Liu Cheng

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Eigen frequency measurements of a fiber optic gyroscope based on a staircase waveform with large temperature range

机译：基于阶梯波形的光纤陀螺仪的尖端频率测量，温度范围大

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The eigen frequency is a key parameter of a fiber optic gyroscope (FOG). We present an online eigen frequency tracking method for FOG technology based on the staircase waveform and a four-step frequency perturbation. Results show that the measurement accuracy of the eigen frequency does not exceed 1.7 Hz for a temperature range of 27.5 degrees C-62.5 degrees C and a variation rate of 0.24 degrees C/min. This is in good agreement with the theoretical model. The method, which exhibits a low time-space complexity, simply requires the addition of a low-rate digitalto-analog converter to the existing gyro system. There is no requirement for the type of staircase waveform in the phase modulation, and the staircase waveform remains unchanged. Thus, this method can be easily transplanted into other algorithms. (C) 2019 Optical Society of America

机译：特征频率是光纤陀螺仪（雾）的关键参数。我们在基于楼梯波形和四步频率扰动的基础上提出了一种用于FOG技术的在线频率跟踪方法。结果表明，尖锐频率的测量精度不超过1.7Hz，温度范围为27.5℃-62.5℃，变化率为0.24℃/ min。这与理论模型很好。表现出低时间空间复杂度的方法简单地要求将低速率DigiteDo-Damporter添加到现有的陀螺系统。不要求相位调制中的楼梯波形类型，楼梯波形保持不变。因此，该方法可以容易地移植到其他算法中。（c）2019年光学学会

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《Applied optics》 |2019年第6期|共7页
作者
Zhu Xunmin; Chen Xingfan; Shu Xiaowu; Liu Cheng;
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作者单位

Zhejiang Univ Coll Opt Sci &

Engn Hangzhou 310058 Zhejiang Peoples R China;

Zhejiang Univ Coll Opt Sci &

Engn Hangzhou 310058 Zhejiang Peoples R China;

Zhejiang Univ Coll Opt Sci &

Engn Hangzhou 310058 Zhejiang Peoples R China;

Zhejiang Univ Coll Opt Sci &

Engn Hangzhou 310058 Zhejiang Peoples R China;

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Eigen frequency measurements of a fiber optic gyroscope based on a staircase waveform with large temperature range

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