基于双轴旋转框架捷联惯性组件快速标定方法研究

现场条件下惯组的标定精度及标定速度直接影响惯性导航系统的使用.基于双轴旋转框架的捷联惯组快速标定法,将带有旋转框架的惯组安装在载体上,只需一次通电后控制双轴框架合理转位,实现惯组误差参数的快速辨识.结果表明6位置快速标定法,可以满足捷联惯组现场标定精度要求且在30 min内即可完成惯组标定,尤其是降低了现场标定时对高精度三轴转台的依赖,极大地提高了器件测试的灵活性.

Research on Fast Calibration Method for Strapdown Inertial Measurement Units Based on Two Axis Rotating Frame

The calibration accuracy and speed for inertial measurement unit(IMU) directly affects the use of inertial navigation system under field conditions.Based on fast calibration method of strapdown inertial measurement unit(SIMU) with the biaxial rotation framework,the IMUs are mounted on a carrier,and after only one power,reasonable transposition of biaxial framework is controlled,which could achieve rapid identification of error parameters for the IMUs.The results show that the fast calibration method of 6-position can perfectly meet the calibration precision of SIMU under field conditions,and complete the IMU calibration in 30 minutes,especially reduce the dependence on high precision three-axis turntable,and greatly enhances the flexibility of the device testing.