基于AR多变量模型的半球谐振陀螺温度漂移建模

Modelling Temperature Drift of HRG Based on AR Multi-Variable 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,导致陀螺产生温度漂移,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,本文利用时间序列中的AR多变量模型对温度漂移数据进行分析,建立了漂移和温度的两个变量的随机数学模型,为温度补偿打下了基础。

In the working process of the HRG（Hemisphemical resonator gyro）, temperature change is inevitable. Temperature change leads to the shift of HRG structure size so that the output of HRG produces thermal drifts.. In order to improve the precision of the HRG, on the basis of relativity of temperature drift and temperature change, the temperature drift data is analyzed with the AR muti-variable model in the time sequence method and established a random error model of two variables drift and temperature. This is the base of temperature compensation.