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大量程高精度光纤陀螺的设计与实现
袁慧铮,陆俊清,李星善,邵志浩,葛仲浩,高博
0
(湖北航天技术研究院总体设计所)
摘要:
采用增强Sagnac效应的方式提高干涉式光纤陀螺精度时,往往会减小陀螺的量程。从理论角度分析了高精度光纤陀螺实现量程扩展的可能性,完成了相关的算法设计,实现了跨条纹工作的平滑过渡,搭建了实验平台,成功将高精度光纤陀螺的量程从[Ω-π]~[Ω-π]扩展到[Ω-7π]~[Ω7π]。通过对量程扩展前后陀螺标度因数、零偏稳定性等参数的对比,得到了陀螺在量程扩展后不影响其基本参数的结论,进一步验证了高精度光纤陀螺的大量程设计的正确性和可靠性。
关键词:  高精度  光纤陀螺  量程  跨条纹
DOI:
基金项目:
Design and Implementation of High Precision I-FOG with Wide Dynamic Range
YUAN Hui-zheng,LU Jun-qing,LI Xing-shan,SHAO Zhi-hao,GE Zhong-hao,GAO Bo
(The 9th Designing of China Aerospace Science Industry Crop)
Abstract:
An ideal way to achieve high precision of I-FOG is to enhance Sagnac effect. Lengthing the fiber and enlarging the diameter of fiber coil are the major two methods. However, they bring sharp decrease on the dynamic range of I-FOG. An algorithm attempting to make the I-FOG work on higher interference fringe is presented and designed. The experiment platform to verify the algorithm is also established. Experiment results show that the dynamic range of I-FOG is successfully enlarged from [Ω-π]~[Ω-π] to [Ω-7π]~[Ω7π]. The bias and scalar factor tests show that the dynamic-range-extended I-FOG is at the same precision as the original I-FOG, which give a further evidence to prove the correctness and reliability of the dynamic-range-extended algorithm.
Key words:  High precision  Fiber optic gyro  Dynamic range  Crossing the interference fringe

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