Micro-machined vibrating ring gyroscope

CHEN Li; CHEN De-yong; WANG Jun-bo

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Micro-machined vibrating ring gyroscope

Article | 更新时间：2020-08-12

- Micro-machined vibrating ring gyroscope
- Optics and Precision Engineering Vol. 17, Issue 6, Pages: 1344-1351(2009)
- 作者机构：
  
  中国科学院电子学研究所传感技术国家重点实验室北京,100190
- 作者简介：
- 基金信息：
- DOI：
  CLC： U666.12
- Received：20 January 2009，
  
  Revised：30 April 2009，
  
  Published Online：20 June 2009，
  
  Published：20 June 2009
- 稿件说明：
移动端阅览
陈李,陈德勇,王军波. 微机械振动环陀螺[J]. 光学精密工程, 2009,17(6):1344-1351

CHEN Li, CHEN De-yong, WANG Jun-bo. Micro-machined vibrating ring gyroscope[J]. Optics and precision engineering, 2009, 17(6): 1344-1351.
陈李,陈德勇,王军波. 微机械振动环陀螺[J]. 光学精密工程, 2009,17(6):1344-1351 DOI：

CHEN Li, CHEN De-yong, WANG Jun-bo. Micro-machined vibrating ring gyroscope[J]. Optics and precision engineering, 2009, 17(6): 1344-1351. DOI：

摘要

为了减小振动环驱动模态和检测模态的频率差从而提高陀螺性能

提出了一种采用电磁驱动、电磁检测的全对称振动环陀螺结构。采用MEMS体硅工艺完成该微机械振动环陀螺的加工

其结构在保持镜像对称的同时

还保持了中心对称

因此整个结构高度对称

有利于减小模态频率差。为有效跟踪陀螺驱动模态的谐振频率并稳定驱动模态的幅值

设计了闭环驱动控制电路。该电路由低噪声前置放大器、相位调整环节以及自动增益放大器(VGA)组成。测试结果表明

该陀螺两个模态频率差为0.27 Hz

实现了频率较好的匹配。在±200 °/s

测得陀螺灵敏度为8.9 mV/(°/s)

分辨力为0.05 °/s

非线性度为0.23%。

Abstract

To reduce the frequency split of the drive mode and the sense mode of a vibrating ring gyroscope to improve the performance of the gyroscope

a novel symmetrical structure with electromagnetic driving and detection is proposed in this paper. The Micro-machined Vibrating Ring Gyroscope (MVRG) is fabricated in centro-symmetric and mirror-symmetric micro structures by MEMS bulk silicon processing with (100) oriented single-crystal silicon

which is conductive to reducing the frequency split. A closed-loop control circuit consisting of a low noise front-end amplifier

a phase shifter and a Variable Gain Amplifier (VGA) is developed to track the drive mode resonant frequency and to stabilize the vibration amplitude of the drive mode. The test results show that the frequency split of drive mode and the sense mode is about 0.27 Hz

which means the frequencies have been matched well. The sensitivity of this gyroscope is 8.9 mV/(°/s)

the resolution is 0.05°/s and nonlinearity is about 0.23% in the rotation rate ranges of ±200 °/s.

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Related Author

YANG Liang

SU Yan

QIU An-ping

XIA Guo-ming

ZHANG Ming

CHEN De-yong

WANG Jun-bo

陈李

Related Institution

南京理工大学机械工程学院

State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences

重庆大学2. 中国科学院电子学研究所

MEMS Center, Harbin Institute of Technology

College of Information and Communication Engineering, Harbin Engineering University

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