三轴磁传感器的校正方法  

Correction method of 3-axis magnetic sensor

作　　者：刘建敬[1,2] 陈丽 汪冬瑾[1,2] 戚红向 LIU Jianjing;CHEN Li;WANG Dongjin;QI Hongxiang(State Key Laboratory of Aerospace Intelligent Control Technology,Beijing 100854,China;Beijing Aerospace Automatic Control Institute,Beijing 100854,China;Beijing Aerospace Guanghua Electronic Technology Corporation,Beijing 100854,China)

机构地区：[1]宇航智能控制技术国家级重点实验室,北京100854 [2]北京航天自动控制研究所,北京100854 [3]北京航天光华电子技术有限公司,北京100854

出　　处：《现代电子技术》2018年第9期179-181,186,共4页Modern Electronics Technique

摘　　要：为了消除三轴磁传感器自身的误差,针对其存在的偏移误差、灵敏度误差和非正交误差的特点,建立三轴磁传感器的误差校正模型,利用批量最小二乘拟合方法提出相应的磁传感器校正方法,不需要额外的加速计辅助即可对三轴磁传感器进行校正,并通过磁传感器的误差校正实验进行验证。校正实验结果表明,该三轴磁传感器校正后的均方根误差减小到103 n T,磁传感器的校正方法可以有效消除自身的误差,并且不需要其他辅助手段。In order to eliminate the errors of 3-axis magnetic sensor itself,an error correction model of 3-axis magnetic sen-sor was established according to the characteristics of the offset error,sensitivity error and non-orthogonal error.On the basis of the batch least square fitting method,the corresponding correction method of magnetic sensor is proposed,which can correct the errors of magnetic sensor without the additional accelerometer.The calibration method of 3-axis magnetic sensor was verified with experiment.The results show that the root-mean-square error corrected with 3-axis magnetic sensor is decreased to 103 nT,and the correction method of magnetic sensor can eliminate the errors itself without other auxiliary means.

关 键 词：磁传感器 误差校正模型 最小二乘 拟合方法 地磁场 均方根误差 

分 类 号：TN03-34[电子电信—物理电子学] TJ413.6[兵器科学与技术—火炮、自动武器与弹药工程]