惯性平台误差快速自标定技术

Rapid Autocalibration for the Errors of Inertial Platform

误差标定及补偿是提高惯性系统实用精度的重要手段。惯性平台借助自身框架的转动及锁定功能可以实现自主误差标定 ,为载体的机动性和制导 /导航精确性创造了条件。但标定的完善性与快速性之间存在矛盾。本文针对一种三轴平台设计了一个十六位置误差标定及自主对准一体化方案 ,可以分离出总计 42项误差 ,其中包括自主确定方位。占用时间约 70分钟 ,在标定完善性与快速性之间达到了较合理地折衷 。

Error calibration and compensation is an important means for increasing the practical precision of inertial systems.The inertial platform can achieve autonomous calibration depending on the capability of turning and locking of its frame,so it gives the possibility of vehicle maneuverability and high accuracy of guidance/anvigation.But there existed a contradiction between perfection and rapidity to solve.In this paper,an integral scheme of 16position error calibration and autonmous alignment for threeaxis platform is given.It may calibrate 42 errors in all,including the determining orientation,and will take about 70 minutes.The scheme achieved a reasonable compromise between perfection and rapidity,and acquired a good result.