15 October 2013 Reduction of the effect of the overflow reset in resonant frequency servo loop for resonator fiber optic gyro
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Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 89240P (2013) https://doi.org/10.1117/12.2031547
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China
Abstract
Digital proportional-integral (PI) controller is always adopted in the resonant frequency servo loop in a highperformance resonator fiber optic gyro (R-FOG). Large reset pulse at the output of the R-FOG occurs on the overflow reset of the digital PI controller, which limits the lock-in frequency accuracy and system response. To reduce the effect of the overflow reset in the digital PI, an auto-controlled reset technique is proposed and experimentally demonstrated. As a result, the time back to the lock-in state falls from 8 s to 5 ms. With the integration time of 1 s, the equivalent accuracy of the resonant frequency servo loop is improved to 0.18 deg/h.
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Xiao Lu, Xuhui Yu, Huilian Ma, Zhonghe Jin, "Reduction of the effect of the overflow reset in resonant frequency servo loop for resonator fiber optic gyro", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89240P (15 October 2013); doi: 10.1117/12.2031547; https://doi.org/10.1117/12.2031547
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