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谐振子偏心对半球陀螺精度的影响
引用本文:李灿,汪立新,秦伟伟,田颖.谐振子偏心对半球陀螺精度的影响[J].传感技术学报,2015,28(6):831-835.
作者姓名:李灿  汪立新  秦伟伟  田颖
作者单位:第二炮兵工程大学,西安,710025
基金项目:半球谐振陀螺平台惯导系统技术项目
摘    要:为了获得谐振子偏心对半球陀螺测量角速度的影响,首先基于谐振子径向位移动力学方程,得到了反馈激励幅值与输入角速度的关系。然后给出了谐振子偏心产生的原因,从传感器和激励器的角度分析了谐振子偏心的影响,利用等效输入角速度的思想建立了谐振子偏心的误差模型,仿真计算了谐振子偏心对陀螺测量的影响结果。最后设计实验,给出了基于二轴转台的6位置误差系数标定方法,标定结果验证了误差模型的真实性。

关 键 词:半球谐振陀螺  谐振子偏心  误差模型  等效输入角  误差系数标定

Influence of resonator eccentricity on accuracy of hemispherical resonator gyro
LI Can,WANG Lixin? , QIN Weiwei,TIAN Ying.Influence of resonator eccentricity on accuracy of hemispherical resonator gyro[J].Journal of Transduction Technology,2015,28(6):831-835.
Authors:LI Can  WANG Lixin?  QIN Weiwei  TIAN Ying
Abstract:In order to acquire the influence of resonator eccentricity on the accuracy of hemispherical gyro,based on the dynamic motion equation of resonator,the relationship of feedback actuator and input angular rate is established. According to the measurement principle of force re-balance model gyro,the influence of resonator eccentricity is an-alyzed from the view of sensor and actuator,and the error model of resonator eccentricity is calculated at the thought of equivalent input angular rate,and the result of error model is computed through simulation. Design an experi-ment,error coefficient calibration method is supplied through six attitudes based on biaxial turntable. The authentici-ty of the error model is validated by the result of calibration.
Keywords:hemispherical gyroscope  resonator eccentricity  error model  equivalent input angular rate  error coeffi-cient calibration
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