Automatic Mode-Matching and Scale Factor Adjustable Detection System for Force to Rebalance Control of Cobweb-Like Gyroscopes

An automatic mode-matching circuit and scale factor adjustable detection system for force to rebalance cobweb-like disk resonator gyroscopes (DRG) are presented in this work. The mode-matching circuit uses a phase detection system to track and control phase difference between output signal of drive...

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Bibliographic Details
Published in2018 IEEE SENSORS pp. 1 - 4
Main Authors Mengmeng Cheng, Shuwen Guo, Bo Fan, Quan Wan, Zuxiang Wen, Dacheng Xu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2018
Subjects
disk resonator gyroscopes
Electrodes
Force
Gyroscopes
mode match
PI control
Resonant frequency
scale factor adjustable
Sensors
Tuning
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Summary:An automatic mode-matching circuit and scale factor adjustable detection system for force to rebalance cobweb-like disk resonator gyroscopes (DRG) are presented in this work. The mode-matching circuit uses a phase detection system to track and control phase difference between output signal of drive mode and quadrature error to match the mode resonance frequencies, which results in a significant performance improvement. Besides, a new scale factor adjustment method is proposed, which could be used in force to rebalance detection system of cobweb-like DRG. The experimental results show that the scale factor of gyroscope with closed loop controlled sense mode improves from 7.9mV/°/s to 19.1mV/°/s, and the bias instability improves from 11.19°/hr to O.43°/hr.
ISSN:2168-9229
DOI:10.1109/ICSENS.2018.8589903