结构材料对光纤陀螺动态性能的影响

刘海霞; 蒋鹞飞; 宋凝芳; 潘雄

结构材料对光纤陀螺动态性能的影响

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（50905009）

详细信息

中图分类号: V241.533
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出版历程
- 收稿日期: 2013-04-03
- 网络出版日期: 2014-01-20

Effect of structural material upon the dynamic performance of FOG

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

摘要

摘要: 光纤陀螺（FOG，Fiber-Optic Gyroscope）在动态运用过程中输出易产生非互易性误差，分析FOG产生振动误差的原因，提出结构材料的性质对FOG动态性能有显著的影响.对作为FOG结构核心的本体采用不同结构材料，分别建立对应的FOG有限元模型，进行模态分析以及谐响应分析，定性分析结构材料的比刚度对FOG动态性能的影响，通过扫频振动和随机振动实验验证模型建立的正确性.结果表明，将比刚度高的铍铝材料替换铝合金材料应用在FOG本体上，能将FOG的一阶固有频率由1 452 Hz提高至2 213 Hz，可显著提高FOG的动态输出精度，并减小FOG整体质量，特别适用于轻小型FOG.
- 光纤陀螺 /
- 结构材料 /
- 比刚度 /
- 动态性能
Abstract: In a dynamic process, the fiber-optic gyroscope (FOG) generates a nonreciprocal error easily. After analyzing the reason of the FOG generating dynamic error, the principle that structural material performance has a significant influence on the FOG dynamic performance was proposed. Applied different structural materials in the structural body that as FOG the major part, the finite element models were made respectively. The ratio stiffness of structural material impacting on the FOG dynamic performance was qualitatively analyzed through modal analysis and harmonic response analysis. Random vibration and sine sweep vibration experiments were also executed for confirmation with finite element model. The results show that the first resonance frequency of the FOG is increased from 1 454 Hz to 2 213 Hz by applying beryllium aluminum alloy which has higher ratio stiffness instead of aluminum alloy. FOG dynamic accuracy is significantly improved with the resonance frequency increasing. Deserve to mention that beryllium aluminum alloy makes the FOG become lighter and more suitable for use in a small and light FOG.
- fiber-optic gyroscope (FOG) /
- structural material /
- ratio stiffness /
- dynamic performance

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参考文献(11)

[1]	Lee B.Review of the present status of optical fiber sensors[J]. Optical Fiber Technology, 2003, 9(2):57-79
[2]	宋凝芳, 张春熹, 李立京, 等.数字闭环光纤陀螺振动误差分析[J].北京航空航天大学学报, 2004, 30(8):702-706 Song Ningfang, Zhang Chunxi, Li Lijing, et al.Analysis of vibration error in digital closed-loop fiber optic gyroscope[J].Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(8) :702-706(in Chinese)
[3]	孟照魁, 邵洪峰, 徐宏杰, 等.固胶对保偏光纤环的影响[J].北京航空航天大学学报, 2006, 32(8):958-961 Meng Zhaokui, Shao Hongfeng, Xu Hongjie, et al.Effect caused by coating adhesive on polarization-maintaining fiber coil[J].Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(8):958-961(in Chinese)
[4]	刘淑荣, 吴衍记, 徐磊.结构谐振对闭环光纤陀螺振动性能的影响[J].红外与激光工程, 2008, 37(S):256-269 Liu Shurong, Wu Yanji, Xu Lei.Relationship between vibration error and structural resonance in closed-loop FOG[J].Infrared and Laser Engineering, 2008, 37(S):256-269(in Chinese)
[5]	任剡, 房建成, 许端.直升机光纤陀螺IMU抗振设计及实时滤波方法[J].北京航空航天大学学报, 2013, 39(4):1-5 Ren Yan, Fang Jiancheng, Xu Duan.Anti-vibration design and real-time filter methods for FOG IMU used in the helicopter[J].Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(4):1-5(in Chinese)
[6]	刘孝宁, 马世光.铍铝合金的研究与应用[J].稀有金属, 2003, 27(1):62-65 Liu Xiaoning, Ma Shiguang.Study and application of AlBe alloy[J].Chinese Journal of Rare Metals, 2003, 27(1):62-65(in Chinese)
[7]	廖延彪.光纤光学[M].北京:清华大学出版社, 2000:68 Liao Yanbiao.Fiber optics[M].Beijing:Tsinghua University Press, 2000:68(in Chinese)
[8]	Zhang Yonggang, Gao Zhongxing.Fiber optic gyroscope vibration error due to fiber tail length asymmetry based on elastic-optic effect[J].Optical Engineering, 2012, 51(12):124403-1-124403-6
[9]	Herve C L.The fiber optic gyroscopes[M].Norwood:Artech House, 1993
[10]	刘颖, 赵小东, 李言, 等.采用冗余设计的光纤陀螺组合支架的优化及分析[J].红外与激光, 2012, 41(6):1556-1560 Liu Ying, Zhao Xiaodong, Li Yan, et al.Optimize and analysis of fiber optic gyroscope combination bracket based on redundancy design[J].Infrared and Laser Engineering, 2012, 41(6): 1556-1560(in Chinese)
[11]	Thomson W T, Dahleh M D.Theory of vibration with applications[M].Beijing:Tsinghua University Press, 2005:18