| Citation: |
Zhang Xulin, Ma Huilian, Jin Zhonghe, Ding Chun. An Open-Loop Test of a Resonator Fiber Optic Gyro[J]. Journal of Semiconductors, 2006, 27(4): 688-691.
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Zhang X L, Ma H L, Jin Z H, Ding C. An Open-Loop Test of a Resonator Fiber Optic Gyro[J]. Chin. J. Semicond., 2006, 27(4): 688.
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An Open-Loop Test of a Resonator Fiber Optic Gyro
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Abstract
The resonator fiber optic gyro (R-FOG),which utilizes a resonance frequency change due to the Sagnac effect,is a promising candidate for the next generation inertial rotation sensor.In this study,an open-loop R-FOG is set up using phase modulation spectroscopy.First,the demodulation curve is obtained using a lock-in amplifier.From the demodulation signal,a gyro dynamic range of ±4.2rad/s is obtained.Then,using different phase modulation frequencies,the open-loop gyro output signal is measured when the gyro is rotated clockwise or counterclockwise.The bias drift as a function of time is also measured.The fluctuation of the output over 5s is about 0.02rad/s.The drift can be reduced by taking countermeasures against system noise. -
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