|本期目录/Table of Contents|

 A Closed-Loop Self-Excited Drive Circuit for Quartz Gyroscope(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2012年6期
页码:
497-502
栏目:
微机电系统
出版日期:
2012-11-15

文章信息/Info

Title:
石英陀螺闭环自激驱动电路
作者:
 WANG Qing-yi1 CHEN Wei-ping12 YIN Liang1 LIU Xiao-wei12 ZHOU Zhi-ping1
 (1. Department of Microelectronics, Harbin Institute of Technology, Harbin 150001, China;
2. Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin 150001,China)
Author(s):
王庆一1 陈伟平12 尹亮1 刘晓为12 周治平1
(1. 哈尔滨工业大学微电子科学与技术系,哈尔滨150001;
2. 微系统与微结构制造教育部重点实验室,哈尔滨150001)
关键词:
 quartz gyroscope application-specific integrated circuit (ASIC) drive circuit
Keywords:
石英陀螺专用集成电路驱动电路
分类号:
TN432
DOI:
-
文献标识码:
A
摘要:
In order to satisfy the requirement of high performance,miniaturization and integration for quartz gyroscope, design of the application-specific integrated circuit (ASIC) interface chip is the trend. In this paper, it is derived that a square wave drive mode is the tradeoff of system performance and complexity based on the analysis of electrical and mechanical characteristics of the element. A closed-loop self-excited drive circuit is designed based on the above conclusion. This circuit together with the quartz element comprise the closed-loop that achieves the self-excited oscillation, and an automatic gain control module maintains the stability of the vibration amplitude. The closed-loop self-excited drive circuit is realized in a 0.5 μm CMOS process. The test results show that the designed circuit accomplishes a drive signal with stable amplitude and frequency, with the amplitude stability of 0.01%. The performance of the quartz gyroscope integrated with this circuit can satisfy the tactical requirement.
Abstract:
为使石英陀螺满足高性能、小型化和集成化需求,设计石英陀螺专用集成电路接口芯片势在必行. 本文通过分析石英陀螺表头的机电特性,得出方波驱动方式是系统性能和复杂程度的折衷. 据此设计了一种闭环自激驱动电路. 该电路与石英结构形成反馈环路,从而实现陀螺的自激驱动,并通过自动增益控制电路实现幅值稳定. 该电路已用0.5 μm CMOS工艺实现,测试结果表明该电路可以实现稳幅稳频的驱动,幅值稳定度0.01%. 集成该驱动电路的石英陀螺系统达到战术级性能.

参考文献/References

备注/Memo

备注/Memo:
收稿日期:
基金项目:
作者简介:
通讯作者:
2012-01-06.
国家重点基础研究发展计划(973 计划)资助项目(2012CB934104).
王庆一(1981— ),男,博士生.
王庆一,wangqingyi2011@gmail.com.
更新日期/Last Update: 2013-02-26