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CLC number: TN24

On-line Access: 2011-11-04

Received: 2010-12-26

Revision Accepted: 2011-04-01

Crosschecked: 2011-08-29

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Journal of Zhejiang University SCIENCE C 2011 Vol.12 No.11 P.942-950

10.1631/jzus.C1000441


Optimization of the resonant frequency servo loop technique in the resonator micro optic gyro


Author(s):  Yang Ren, Zhong-he Jin, Yan Chen, Hui-lian Ma

Affiliation(s):  Department of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   zju.renyang@qq.com, jinzh@zju.edu.cn

Key Words:  Resonator micro optic gyro (RMOG), Resonance frequency servo loop, Phase compensating methodAn erratum to this article can be found at doi:10.1631/jzus.C10e0441


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Yang Ren, Zhong-he Jin, Yan Chen, Hui-lian Ma. Optimization of the resonant frequency servo loop technique in the resonator micro optic gyro[J]. Journal of Zhejiang University Science C, 2011, 12(11): 942-950.

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doi="10.1631/jzus.C1000441"
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%T Optimization of the resonant frequency servo loop technique in the resonator micro optic gyro
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%A Zhong-he Jin
%A Yan Chen
%A Hui-lian Ma
%J Journal of Zhejiang University SCIENCE C
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%N 11
%P 942-950
%@ 1869-1951
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C1000441

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T1 - Optimization of the resonant frequency servo loop technique in the resonator micro optic gyro
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A1 - Hui-lian Ma
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.C1000441


Abstract: 
Proportional integrator (PI) is always adopted in the resonant frequency servo loop in a resonator micro optic gyro (RMOG). The oscillation phenomenon is observed when adjusting the loop gain surpassing a threshold. This phenomenon limits system performance on step response speed and residual error. Based on the experiment system, a simulation model was set up. Further analysis shows that the threshold gain is related to the system loop filter setting and the loop delay. The traditional PI frequency servo loop technique in the RMOG system cannot keep up with the environment’s disturbance quickly enough, which leads to a large residual error. A compensating method is proposed to optimize the tracking performance, solve the oscillation problem, and speed up the system response. Simulation and experiment results show that the compensated system is superior in performance. It has less residual error in the stable state and is 10 times quicker than the uncompensated system on the step response.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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