WANG Jun-jie, CHE Lu-feng, LI Yu-fang, et al. Study on electrostatic self-excited driving for tuning fork micromachined gyroscope with large Q value[J]. 2007, (10): 38-40.
WANG Jun-jie, CHE Lu-feng, LI Yu-fang, et al. Study on electrostatic self-excited driving for tuning fork micromachined gyroscope with large Q value[J]. 2007, (10): 38-40. DOI: 10.13873/j.1000-97872007.10.020.
高Q值音叉式微陀螺静电自激驱动研究
摘要
为了提高检测精度
对研制的具有滑膜阻尼的音叉式微机械陀螺采用静电自激驱动方式
它能够使驱动振动自动稳定在驱动模态的固有频率上
并保持恒定的驱动振动速度幅度。分析了静电自激驱动电路工作原理
采用自动增益控制(AGC)设计制作了相应的检测电路
实现了Q值为325、谐振频率为2.04 kHz微陀螺的闭环恒幅自激振动。
Abstract
In order to improve detection precision
electrostatic self-excited driving mode is presented for tuning fork micromachined gyroscope fabricated with slide-film damping
which enables driving motion to oscillate stably with natural frequency of driving mode and keep steady amplitude of driving oscillation’s velocity.The principle of electrostatic self-excited driving is analyzed
related detecting circuits is designed and fabricated by automatic gain control(AGC)and closed-loop self-excited driving is performed for the gyroscope with the Q value of 325 and resonance frequency of 2.04 kHz.