三分量磁通门传感器校正的循环优化算法

由于制造工艺的原因,三分量磁通门传感器存在固有的零位误差、标度误差和正交误差。介绍了三分量磁通门传感器固有误差的特点,及其数学描述方法。提出了一种循环优化算法,将优化算法引入全部固有误差的校正,采用循环计算的思想提高了解算误差校正参数的准确度。解决了由于测量数据中三种固有误差的同时存在,难于准确求算每种校正参数的问题。应用表明,循环优化算法大大提高了三分量磁通门传感器的校正效果。

Repeat-optimization Algorithm for the Calibration of Triaxial Fluxgate Magnetometers

There are inevitably offsets,scale factor errors and orthogonal errors in the outputs of triaxial fluxgate magnetometers for the reasons of manufacture crafts. The characteristics and mathematical models of the physical errors are introduced. A repeat-optimization algorithm is presented to calibrate all of the physical errors with the idea of optimization and repeating calculation. The accuracy of the calibration parameters is improved. Further more,the algorithm is immune to interaction among different errors in the process of calculating each type of calibration parameters. An application shows that the repeat-optimization algorithm greatly improves the calibration of triaxial fluxgate magnetometers.