The sensor temperature characteristics of a fluxgate magnetometer by a wide-range temperature test for a Mercury exploration satellite
The sensor temperature characteristics of a fluxgate magnetometer by a wide-range temperature test for a Mercury exploration satellite
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水星探测卫星大范围温度测试磁通门磁力计传感器温度特性
DOI：
10.1088/0957-0233/18/8/050
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
N. Onishi
中科院分区：
文献类型：
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作者：
Y. Nishio;F. Tohyama;N. Onishi
对行星磁层和行星际空间的磁场观测是澄清行星磁层结构及其与太阳风相互作用的基础。水星固有的磁偶极子是水手10号在飞越水星时发现的，但是磁场的结构及其与太阳风的相互作用还没有得到充分的研究。将在BepiColombo水星磁层轨道器上安装一台日本磁通门磁力计。在行星际空间飞行期间和在水星轨道上，磁力计的传感器放置在延长杆上，将暴露在−100至+175 °C的温度下。然而，传感器的特性-灵敏度，磁偏移和噪声-是温度相关的。特别是，在−160至+200 °C的宽温度范围内，传感器特性的数据不可用。我们开发了一个带有磁屏蔽盒的宽温度范围（从−160到+200 °C）测试系统，并测试了两种类型的传感器芯支架（Inconel和陶瓷芯线轴）。结果，我们得到了传感器的灵敏度，偏移和噪声的特性，并发现陶瓷芯线圈架的噪声性能优于铬镍铁合金芯线圈架的上级。
Magnetic field observations of a planetary magnetosphere and interplanetary space are fundamental in clarifying the structure of the planetary magnetosphere and its interaction with solar wind. The inherent magnetic dipole of Mercury was discovered by flyby observations performed by Mariner 10; however, the structure of the magnetic field and its interaction with solar wind have not been sufficiently investigated. A Japanese fluxgate magnetometer is to be installed on the BepiColombo Mercury magnetospheric orbiter. During the interplanetary space flight and in orbit around Mercury, the sensor of the magnetometer, which is placed on an extension mast, will be exposed to temperatures ranging from −100 to +175 °C. However, the sensor characteristics—sensitivity, magnetic offset and noise—are temperature dependent. In particular, data pertaining to the sensor characteristics over a wide temperature range from −160 to +200 °C are not available. We developed a wide-range temperature (from −160 to +200 °C) testing system with a magnetic shield box and tested two types of sensor core supports (Inconel and ceramic core bobbins). As a result, we obtained the characteristics of the sensor sensitivity, offset and noise and found that the noise performance of the ceramic core bobbin was superior to the Inconel core bobbin.