摘要
振动轮式微机械陀螺仪存在两个主要的工作模态 :驱动模态和敏感模态。本文研究了敏感模态反馈控制环节对系统工作性能的影响。提出刚度、阻尼组合反馈的模态控制思想 ,探讨了利用刚度反馈控制敏感模态的固有谐振频率 ,利用阻尼反馈控制系统检测范围的多参量控制方法 ;并对敏感模态中刚度反馈校正环节和阻尼反馈的校正环节进行了详细的分析 ,建立了系统对两个校正环节在增益和相位上的要求。
A vibrating wheel micromechanical gyroscope is presented in this paper. Such a gyroscope has two vibrating modes: excitation mode and detection mode. A new feedback control method for gyroscopic sensitivity evaluation on the vibrating wheel gyroscope is present in this paper. This method is used to overcome the main drawbacks for the frequency mismatch of the excitation mode and detection mode of the vibrating wheel gyroscope, and improve the linearity and measurement range of the detection circuit of gyroscope. The measure sensitivities of the gyroscope using this closed loop control method are from 0.1 (°)/s -1 to 400 (°)/s -1 .
出处
《中国惯性技术学报》
EI
CSCD
2000年第1期50-54,共5页
Journal of Chinese Inertial Technology
基金
国防科技预研项目
关键词
振动轮式
微机械陀螺仪
刚度反馈
模态控制
vibrating wheel gyroscope
damping feedback
stiffness feedback
adjustment coefficient
