谐振式微光学陀螺标度因数及其非线性度分析

洪灵菲; 张春熹; 冯丽爽; 于怀勇

谐振式微光学陀螺标度因数及其非线性度分析

北京航空航天大学仪器科学与光电工程学院, 北京 100191

基金项目: 国家自然科学基金资助项目(50875015)

详细信息

中图分类号: TN 815;TN 911.74
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- 被引次数: 16
出版历程
- 收稿日期: 2011-04-28
- 网络出版日期: 2012-08-30

Investigation on scale factor and output nonlinearity in resonator micro-optic gyro

School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 谐振式微光学陀螺(RMOG, Resonator Micro-Optic Gyro)输出标度因数非线性度在大角速度应用时变得明显,影响陀螺性能.理论分析了RMOG中频率调制偏置量对标度因数及其非线性度的影响;根据RMOG谐振腔的谐振输出特性,仿真计算了输入角速度范围内的理论标度因数及其非线性度.利用已知的温度性能测试结果建立了标度因数温度误差模型.搭建RMOG实验系统,实际测量输出标度因数~0.95.模拟和实际转动实验得到±500(°)/s范围内标度因数非线性度分别为6.88×10^-4和0.93%,表明通过有效消除环境因素影响,可以使RMOG的输出非线性度满足多数惯性应用的要求.
- 谐振式微光学陀螺 /
- 标度因数 /
- 非线性度 /
- 频率调制偏置 /
- 温度误差
Abstract: The output nonlinearity of the resonator micro-optic gyro (RMOG) becomes significant along with the increase of the rotation rate. The influence on the scale factor and output nonlinearity by bias-frequency-modulation rate was theoretically analyzed. Corresponding to the resonant characteristics of the RMOG, theoretical scale factor and output nonlinearity within the rotation rate range were calculated. Furthermore, analysis on scale factor error induced by temperature was carried out. RMOG experimental system was set up, with the scale factor of ~0.95. Nonlinearity of 6.88 10^-4 and 0.93% in the region from 500( )/s to +500( )/s were reliably achieved in the simulated and real rotational test, expressing the output nonlinearity can be low enough for most inertial application with proper countermeasure to eliminate the influence from the environment.
- resonator micro-optic gyro /
- scale factor /
- nonlinearity /
- frequency-modulation bias /
- thermal error

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参考文献(12)

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