基于多项式模型的半球谐振陀螺温度漂移建模

Temperature Drift Modeling of HRG Based on Polynomial Model

在半球谐振陀螺工作过程中,环境温度的变化是不可避免的.温度的变化影响陀螺的结构和谐振频率,导致陀螺产生漂移,为了提高半球谐振陀螺的精度,根据温度漂移和温度变化的相关性,本文利用回归理论对温度漂移数据进行分析,建立了半球谐振陀螺温度偏置漂移的多项式数学模型,实验表明,多项式模型能够有效的补偿半球谐振陀螺的温度偏置漂移.

In the working process of the HRG （Hemispherical resonator gyro）, the environmental temperature change is inevitable. The temperature change leads to the shift of HRG structure size so that the output of HRG produces the temperature drift. In order to improve the precision of the HRG, on the basis of correlation of temperature drift and temperature change, the temperature drift data is analyzed with the recursive theory. A polynomial model is established to describe HRG temperature bias drift. The result shows that the polynomial model is effective to compensate the temperature bias drift.