Development Study on the Fluxgate Magnetometer for Planetary Research Vehicle

某航天器磁通门磁强计传感器暴露在太空中，要求传感器在+200℃~-160℃的宽温度范围内高精度工作，研制了一种由磁屏蔽材料制成的宽范围温控箱。该系统的温度变化范围为+200~-160℃，并配有一个磁定标线圈和6个通道热电偶。在第一个测试步骤中，我们测试了几种类型的传感器芯，在20到+200℃的高温区。用过的铁芯是用坡莫合金薄箔制成的，它缠绕在两种由因科涅尔和陶瓷制成的线轴上。在下一步中，我们在20℃到-160℃的低温范围内测试了这些传感器核心。与此同时，我们改进了磁强计的电子设备，生产了一种类似于贝皮-科伦坡水星研究车的模型磁强计。得到了两种传感器在较宽范围内的温度特性数据。并研制了磁矩测量系统，对卫星部件、仪器和卫星本身的磁化强度进行了测量。(1)搭建了磁屏蔽温度控制系统，能够控制+200℃~-160℃的温度。该系统是一种宽范围的温度测试系统，适用于非磁场环境下的温度测试。(2)获得了两种传感器芯体的温度特性、灵敏度、漂移、偏移量和噪声。高速磁矩测量系统正在对多台仪器和卫星的磁化性能进行星载电磁兼容测试。

A sensor of fluxgate magnetometer on a space vehicle is exposed in space, so the sensor should be required working on a good condition in the wide range temperature from +200℃ to -160℃ with precise resolution.We developed a wide range temperature control box that is made of magnetic shield material. The system changes the temperature from +200 to -160℃, and it has a magnetic calibration coil and 6 channel thermocouples. We tested some kinds of sensor core at the range of high temperature region, from 20 to +200℃ in the first test step. The used core is made of Permalloy thin foil and it is winded around two kind bobbins that is made of Inconel and made of ceramics. In the next step, we tested these sensor cores at the low temperature range, from 20℃ to -160℃. At the same time, we improved the magnetometer electronics and we produce a model magnetometer that is similar to that of the Bepi-Colombo Mercury Research Vehicle. We obtained good data of temperature characteristics of 2 kind sensors at the wide range. And also we developed a magnetic moment measuring system and measured magnetization of satellite parts, instruments and satellite itself.In this study, we obtained the following.(1) A magnetic shielded temperature control system was built and it is able to control the temperature from +200℃ to -160℃. It is wide range temperature test system and it will be useful system for temperature test under the non magnetic field environment.(2) The temperature characteristics, sensitivity, drift, offset and noise of sensor were obtained for 2 kind sensor cores. The result of ceramic sensors showed excellent characteristics.(3) The high speed magnetic moment measuring system is working on a satellite EMC test of the magnetization for many instruments and satellites.