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为解决光纤陀螺全频带频率响应测试问题,提出了基于光纤陀螺Faraday效应的频率响应测试原理。用有限元法建立光纤环的传输模型,在使用高折射率光纤和光纤环固化条件下推导了光纤陀螺的Faraday效应输出模型,得出光纤陀螺Faraday效应输出与磁场强度成正比的结论。根据光纤陀螺的检测原理,分析了该测试方法与角振动台测试法的等效性。设计了模型验证实验,结果表明该方法可以克服角振动台测试法输出频率低的缺点,可以对光纤陀螺的全频带频率响应进行测试。
In order to solve the full-band frequency response test problem of FOG, a frequency response test principle based on Faraday effect of FOG was proposed. The transmission model of fiber ring was established by finite element method. The Faraday effect output model of fiber optic gyroscope was derived under the conditions of high refractive index fiber and fiber ring curing. The conclusion was drawn that Faraday effect output of FOG was proportional to the magnetic field strength. According to the principle of fiber optic gyroscope, the equivalence between the test method and the angular vibration table is analyzed. The model verification experiment is designed. The results show that this method can overcome the shortcoming of the low output frequency of the angular vibration table test method and can test the full-band frequency response of the fiber optic gyroscope.