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北京航空航天大学 仪器科学与光电工程学院,北京 100191
收稿日期:2009-10-15,
修回日期:2009-12-28,
网络出版日期:2010-10-28,
纸质出版日期:2010-10-20
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马东营, 宋凝芳, 金靖, 宋镜明. 微小型光纤陀螺组合分时复用技术[J]. 光学精密工程, 2010,18(10): 2171-2177
MA Dong-ying, SONG Ning-fang, Jin Jing, SONG Jing-ming. Time-division multiplexing for micro-miniature fiber-optic gyroscopes[J]. Editorial Office of Optics and Precision Engineering , 2010,18(10): 2171-2177
马东营, 宋凝芳, 金靖, 宋镜明. 微小型光纤陀螺组合分时复用技术[J]. 光学精密工程, 2010,18(10): 2171-2177 DOI: 10.3788/OPE.20101810.2171.
MA Dong-ying, SONG Ning-fang, Jin Jing, SONG Jing-ming. Time-division multiplexing for micro-miniature fiber-optic gyroscopes[J]. Editorial Office of Optics and Precision Engineering , 2010,18(10): 2171-2177 DOI: 10.3788/OPE.20101810.2171.
为了有效减小多轴光纤陀螺组合的功耗、体积和重量
实现光纤陀螺组合的微小型化
应用分时复用技术
提出了一种基于33耦合器
工作在850 nm短波长的光纤陀螺分时复用组合结构。分析了陀螺输出数据处理方法
得到了分时复用光纤陀螺组合的相对极限零偏稳定性。建立了分时复用光纤陀螺切换模型
揭示了分时复用导致光纤陀螺轴向切换必然存在一个过渡过程
分析了过渡过程对陀螺组合静态、动态特性的影响。结果显示
光纤陀螺组合的相对零偏稳定性是传感方法的2.1倍
最大输入信号检测带宽为1.1 kHz
标度因数的不对称性和非线性度均小于5010
-6
。最后
通过仿真进行了实验验证
结果表明
该技术可以用于中低精度微小型多轴光纤陀螺组合中。
To reduce the power consumption
volume and the weight of a fiber optic gyroscope
the structure of a time division multiplexing fiber-optic gyroscopic system worked at 850 nm was presented based on a 33 coupler. The data processing method of gyroscopic output was analyzed
and the relative bias stability of the time division multiplexing system was obtained. A switching model of the time division multiplexing fiber-optic gyroscope was established
which pointed out that there is a transient process in axis switching. The effects of the transient process on the static and dynamic characteristics of the gyroscopic system were analyzed
which shows that the relative bias stability is about 2.1 times that of the traditional method
the maximum bandwidth is about 1.1 kHz and both the nonlinearity and uniformity of the real scale factor are less than 5010
-6
. Finally
the results were tested and verified by simulations and experiments
and results indicate that the time division multiplexing can satisfy the requirements of applications to micro-miniature fiber-optic gyroscopes.
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