Quadrature error closed loop compensation method for double-ended quartz tuning fork gyroscope

被引：0

作者：

Liang, Jinxing ^{[1
,2
]}

Chen, Hao ^{[1
,2
]}

Fang, Feihu ^{[1
,2
]}

Huang, Rentao ^{[1
,2
]}

Li, Chengjin ^{[1
,2
]}

机构：

[1] School of Instrument Science and Engineering, Southeast University, Nanjing,210096, China

[2] Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology of Ministry of Education, Southeast University, Nanjing,210096, China

来源：

Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology | 2025年 / 33卷 / 05期

关键词：

Error compensation - Error detection - Quartz - Signal detection - Time domain analysis - Tuning;

D O I：

10.13695/j.cnki.12-1222/o3.2025.05.012

中图分类号：

学科分类号：

摘要：

Quartz tuning fork gyroscopes fabricated by wet etching are difficult to ensure the symmetry of the tuning fork structure, which results in serious orthogonality errors. By briefly analyzing the principle of orthogonality error and its impact on the output of the gyroscope, a closed-loop compensation method based on collecting the charge quantity generated at the drive end as the orthogonality error compensation signal is proposed. On the basis of theoretical analysis, a time-domain simulation model of orthogonal error compensation is established to verify the suppression effect of the proposed compensation method on the orthogonality error signal in the detection path. The proposed method is verified by experiments with a double-ended tuning fork gyro prototype developed in the laboratory. The simulation results and experimental results both show that after introducing the compensation signal, the orthogonality error signal in the detection path is effectively suppressed, and the zero bias stability of the gyroscope is improved by 75.2%, proving the effectiveness of the proposed method. © 2025 Editorial Department of Journal of Chinese Inertial Technology. All rights reserved.

引用

页码：510 / 516