石英微陀螺的驱动控制方法研究  

Research on the Exciting Control Method for Micromachined Quartz Gyroscope

作　　者：谢立强[1] 邢建春[1] 董培涛[2] 吴学忠[2] 

机构地区：[1]解放军理工大学国防工程学院,江苏南京210007 [2]国防科学技术大学机电工程与自动化学院,湖南长沙410073

出　　处：《兵工学报》2013年第6期770-775,共6页Acta Armamentarii

基　　金：国家自然科学基金项目(51005240)

摘　　要：基于相位控制技术设计了石英微陀螺驱动轴的谐振环路,使其产生驱动模态振动。通过提取系统信号幅值的方法,设计了基于速度幅值的控制器,使微陀螺驱动轴的振动幅值保持恒定。建立了Matlab Simulink模型,仿真结果与所设计的谐振环路和幅值控制系统的驱动控制效果一致。试制了石英微陀螺的驱动控制电路,驱动电路的测试结果表明:谐振环路振荡频率与驱动模态频率非常接近,稳幅控制器使得驱动轴迅速起振,并在0.5 s内稳定,谐振频率下的幅值高于噪声85 dB,振动幅值稳定性有显著改善。A drive resonance loop of micromachined quartz gyroscope was designed to generate a drive mode resonance based on phase control technology. A velocity amplitude controller was designed to keep the drive oscillation amplitude invariable by a signal amplitude extraction method. The exciting control system was simulated by Matlab Simulink. The simulation results are in good agreement with the design objectives of the resonance loop and the amplitude control system. A drive circuit was fabricated and tested. The results show that the oscillation frequency of the fabricated drive loop is very close to the drive mode frequency. The amplitude controller makes the drive axis to oscillate rapidly and stabilize in half a second. The amplitude of the drive signal is 85 dB higher than the noise at the resonance frequency.

关 键 词：信息处理技术 石英微陀螺 驱动控制 谐振 

分 类 号：TN492[电子电信—微电子学与固体电子学]