基于球形反馈线圈的三轴磁通门磁强计
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摘要
在高精度三轴磁通门磁强计的设计中,均匀的反馈磁场有助于提高仪器输出的温度稳定性和线性度,同时也可在一定程度上减小由于磁强计各个分量互扰产生的零点偏移。通过简单的物理模型计算,提出了球形反馈线圈的设计方案,并给出了ansys电磁场仿真结果及反馈线圈内部磁场均匀性测试实验结果。经过测试,在此基础上制作的实验样机的线性度达到0.0038%FS,灵敏度温度系数达到0.0000755%FS/℃,且噪声性能也达到9.0807pT/(Hz)～(1/2)。
Homogeneous feedback magnetic field is helpful in improving the performance parameters of three axial fluxgate magnetometer, such as linearity and temperature coefficient. A simple theoretical model of spherical feedback coil is described in this paper; and the simulation result of the magnetic field produced by this coil is shown. Test experiment result of the internal field homogeneity is also given. On the basic of the model, a prototype magnetometer has been manufactured. Test results indicate that the linearity of the prototype reaches to 0.003 8%FS, its sensitivity temperature coefficient reaches to 0.000 075 5%FS/℃ and the noise performance reaches to 9.080 7 pT/(Hz)～(1/2) at 1 Hz.
Homogeneous feedback magnetic field is helpful in improving the performance parameters of three axial fluxgate magnetometer, such as linearity and temperature coefficient. A simple theoretical model of spherical feedback coil is described in this paper; and the simulation result of the magnetic field produced by this coil is shown. Test experiment result of the internal field homogeneity is also given. On the basic of the model, a prototype magnetometer has been manufactured. Test results indicate that the linearity of the prototype reaches to 0.003 8%FS, its sensitivity temperature coefficient reaches to 0.000 075 5%FS/℃ and the noise performance reaches to 9.080 7 pT/(Hz)～(1/2) at 1 Hz.
引文
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[13]朱兆才.三分量磁通门磁变仪探头正交误差对定向的影响[J].东北地震研究,2004(2):70-75.ZHU ZHC.Effects on the right-angled error of the three-component fluxgate magnetometer exploring head to the sense of orientation[J].Seismological Research of North-east China,2004(2):70-75.
[14]NIELSEN O V.Development,construction and analysis of the“Orsted”fluxgate magnetometer[J].Meas.Sci.Technol.,1995(6):1099-1115.
[15]石志勇.一种三探头磁通门传感器的设计[J].传感技术学报,2005(2):433-435.SHI ZH Y.Design of a three detectors fluxgate sensor[J].Chinese Journal of Sensors and Actuators,2005(2):433-435.
[16]何乃明.磁通门探测器的数值计算与仿真[J].仪器仪表学报,2002,23(2):157-160.HE N M.The numerical calculation and simulation of flux gate detector[J].Chinese Journal of Scientific In-strument,2002,23(2):157-160.
[17]何焱.一种便于推广应用的磁通门技术[J].仪器仪表学报,2006,27(10):1279-1282.HE Y.Newtechnique of fluxgate easier to be applied and popularized[J].Chinese Journal of Scientific Instru-ment,2006,27(10):1279-1282.
[18]闫辉.三分量磁通门传感器水平修正方法[J].电子测量与仪器学报,2006,20(6):90-93.YAN H.Horizontal calibration to triaxial fluxgate magne-tometer[J].Journal of Electronic Measurement and In-strument,2006,20(6):90-93.
[2]BRAUER P,NIELSENO V.Fluxgate sensor for the vec-tor magnetometer onboard the Astrid-2satellite[J].Sen-sors and Actuators,2000(81):184-188.
[3]BRAUER P.Transverse field effect in fluxgate sensors[J].Sensors and Actuators,1997(59):70-74.
[4]RIPKA P.Crossfield effect at fluxgate[J].Sensors and Actuators,2000(81):176-179.
[5]RIPKA P.Advances in fuxgate sensors[J].Sensors and Actuators,2003(106):8-14.
[6]AUSTER H U.The THEMIS fluxgate magntometer[J].Space Science Review,2008(141):235-264.
[7]PRIMDAHL.Compact spherical coil for fluxgate magne-tometer vector feedback[J].J.Phys.E:Sci.Instrum,.1982(15):221-226.
[8]ALLDRED J C.Square cross section coils for the produc-tion of uniform magnetic fields[J].J.Phys.E:Sci.In-strum,.1967(44):755-760.
[9]DIACONU E D.Offset thermostability of the TFS-3mag-netometric sensors[J].Sensors and Actuators,1997(57):109-112.
[10]唐列娟.磁通门磁力计测地磁研究[J].传感器与微系统,2006(10):10-12.TANG L J.Fluxgate magnetometer for geomagnetic field measurement[J].Transducer and Microsystem Technolo-gies,2006(10):10-12.
[11]黄子平.非线性含磁芯线圈的PSpice模拟[J].强激光与粒子束,2004(8):1063-1066.HUANG Z P.Simulation of non-linear winding with mag-netic core by PSpice[J].High Power Laser and Particle Beams,2004(8):1063-1066.
[12]郭爱煌.磁通门技术及其应用[J].传感器技术,2000(4):1-4.GUO AI H.Measurement technology of magnetic flux and its application[J].Journal of Transducer Technology,2000(4):1-4.
[13]朱兆才.三分量磁通门磁变仪探头正交误差对定向的影响[J].东北地震研究,2004(2):70-75.ZHU ZHC.Effects on the right-angled error of the three-component fluxgate magnetometer exploring head to the sense of orientation[J].Seismological Research of North-east China,2004(2):70-75.
[14]NIELSEN O V.Development,construction and analysis of the“Orsted”fluxgate magnetometer[J].Meas.Sci.Technol.,1995(6):1099-1115.
[15]石志勇.一种三探头磁通门传感器的设计[J].传感技术学报,2005(2):433-435.SHI ZH Y.Design of a three detectors fluxgate sensor[J].Chinese Journal of Sensors and Actuators,2005(2):433-435.
[16]何乃明.磁通门探测器的数值计算与仿真[J].仪器仪表学报,2002,23(2):157-160.HE N M.The numerical calculation and simulation of flux gate detector[J].Chinese Journal of Scientific In-strument,2002,23(2):157-160.
[17]何焱.一种便于推广应用的磁通门技术[J].仪器仪表学报,2006,27(10):1279-1282.HE Y.Newtechnique of fluxgate easier to be applied and popularized[J].Chinese Journal of Scientific Instru-ment,2006,27(10):1279-1282.
[18]闫辉.三分量磁通门传感器水平修正方法[J].电子测量与仪器学报,2006,20(6):90-93.YAN H.Horizontal calibration to triaxial fluxgate magne-tometer[J].Journal of Electronic Measurement and In-strument,2006,20(6):90-93.
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