捷联式惯性系统陀螺仪数据分析与温度建模

Data Analysis and Temperature Modeling of Gyroscope in Strapdown Inertial System

由于惯性元件在系统上的工作环境和元件测试的工作环境不同,因此在系统上进行陀螺仪数据的分析和建模是非常有必要的。根据实际系统的测试数据,发现陀螺仪的性能与陀螺仪内部的温度和陀螺仪再平衡回路的温度变化有关。在对多次测量数据进行分析后,进行了陀螺仪数据的温度建模,并将建立的温度模型应用于实际系统中,使陀螺仪的精度从0.2°/h提高到0.05°/h。这种方法可以应用到其他类型陀螺仪的温度建模上。

It is necessary that the data analysis and temperature modeling of gyro are done in system, because the work circumstance of gyro in system is different from the work circumstance of gyro in component test, It is found that the performance of gyro is related to the interior temperature of gyro and temperature of rebalance loop of gyro on the basis of measure data in system. Gyro temperature modeling was done after analyzing measure data of gyro. Performance of gyro was improved from 0.2°/h to 0.05°/h when gyro temperature modeling was added in system. This method can be applied in temperature modeling of other gyro.