基于自适应遗传算法的三轴磁强计误差校正方法
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摘要
三轴磁强计已被广泛应用于空间磁场的测量。分析三轴不正交对三轴磁强计测量结果带来的影响,得到三轴磁强计的误差校正公式,建立求解非正交误差角的最优化数学模型,并运用自适应遗传算法对模型进行求解,实现对磁强计固有参数的辨识和测量误差的校正。通过FGM-2000三轴磁力仪实测实验对校正方法进行验证,结果表明,校正方法效果明显,仪器的测量误差减小了88.1%,测量精度显著提高。
Tri-axial magnetometers are widely studied and used in geomagnetic measurement. The influence on the measurement results caused by tri-axial nonorthogonality is analyzed,and the calibration formula is established. An optimization mathematical model is established to get the nonorthogonal error angles,and the Adaptive Genetic Algorithm is used to solve the model,in order to achieve the identification of intrinsic parameters and the calibration of measurement errors. The measurement experiment of FGM- 2000 tri-axial magnetometer is done to verify the calibration method,and results show that the effect is obvious,the measurement error is reduced 88. 1% and the measurement accuracy is significantly improved.
Tri-axial magnetometers are widely studied and used in geomagnetic measurement. The influence on the measurement results caused by tri-axial nonorthogonality is analyzed,and the calibration formula is established. An optimization mathematical model is established to get the nonorthogonal error angles,and the Adaptive Genetic Algorithm is used to solve the model,in order to achieve the identification of intrinsic parameters and the calibration of measurement errors. The measurement experiment of FGM- 2000 tri-axial magnetometer is done to verify the calibration method,and results show that the effect is obvious,the measurement error is reduced 88. 1% and the measurement accuracy is significantly improved.
引文
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[16]王军号,孟祥瑞.一种基于改进遗传RBF神经网络的传感器动态特性补偿算法[J].传感技术学报,2010,23(9):1298-1302.
[2]林春生,向前,龚沈光.三轴磁强计正交误差分析与校正[J].探测与控制学报,2005,27(2):9-12.
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[4]朱昀,董大群.三轴磁强计转向差的自适应校正[J].仪器仪表学报,1999,20(4):392-396.
[5]周庆飞,汪海涛,梁斌.磁通阀式磁传感器最小二乘校正[J].探测与控制学报,2009,31(2):63-70.
[6]周榕军,刘大明,洪泽宏.非理想条件下三轴磁通门传感器误差修正方法[J].舰船科学与技术,2011,33(3):85-89.
[7]吴德会.基于SVR的三轴磁通门传感器误差修正研究[J].传感器与微系统,2008,27(6):43-46.
[8]胡海滨,林春生,龚沈光.基于共轭次梯度法德非理想正交三周磁传感器的修正[J].数据采集与处理,2003,18(1):88-91.
[9]周建军,林春生,张坚.基于蚁群算法对三轴磁强计非正交度的修正[J].舰船科学技术,2011,33(2):106-109.
[10]Kwok H S,Tang W K S.A Fast Image Encryption System Based on Chaotic Maps with Finite Precision Representation[J].Chaos,Solitons and Fractals,2007,32(4):1518-1529.
[11]李志宇,史浩山.一种基于网格和移动代理的无线传感器网络数据融合算法[J].传感技术学报,2008,21(7):1232-1236.
[12]史建国,高晓光,李相民.“预先”进化遗传算法研究[J].宇航学报,2005,26(2):168-173.
[13]徐定杰,刘明凯,沈锋.基于自适应遗传算法的DGPS整周模糊度快速解算[J].航空学报,2013,34(2):371-377.
[14]王小平,曹立明.遗传算法———理论、应用与软件实现[M].西安:西安交通大学出版社,2002(1):68-85.
[15]Cheung A,Bennamoun M,Bergmann N W.An Arabic Optical Character Recognition System Using Recognition-based Segmentation[J].Pattern Recognition,2001,34(2):215-233.
[16]王军号,孟祥瑞.一种基于改进遗传RBF神经网络的传感器动态特性补偿算法[J].传感技术学报,2010,23(9):1298-1302.