一种三轴磁传感器正交误差校正的简便方法

Simple Method to Calibrate Ortho-Error of Tri-Axial Magnetic Sensor

实际使用的三轴磁传感器在探测平台晃动时,所测磁场模值会有较大误差。在传感器测量模型所建立的校正矩阵基础上,通过变换得到新的矩阵,简化了求解,克服了LMS算法在没有获得全方位数据时不能得到矩阵系数精确解的局限性。仿真验证了其有效性。

When tri-axial magnetic sensor sways with the platform, the magnetic field＇s module it measured will have a big error. Get a new matrix from old calibrate matrix which set up by magnetic sensor measure model, and not only simplified the matrix coefficient solution, but also overcome the limitation of LMS algorithm that it can＇t get correct solution when measured date are not all directions. The simulation results obtained have proved the effectiveness of this method.