利用孤立导体建立等离子体探测载荷参考电位方法

研究讨论了一种利用孤立导体在空间等离子体环境中建立探测器参考电位的技术.将一个金属导体与航天器进行电隔离，利用电路将孤立导体电位引入探测器电源模块，为探测器建立参考电位.该技术可安全方便地应用于卫星等航天器，使探测器的地电位与空间等离子体电位基本一致，避免航天器本体电位对探测器的影响.该技术将应用于中国空间站等离子体原位探测器，通过测试验证了该技术方法可以建立-210～+210V的参考电位，满足空间站等离子体原位探测器-200～+200V的参考电位技术需求. 

Method of Establishing Reference Potential of Plasma Detector Using Isolated Conductor

A technique of using an isolated conductor for establishing a probe reference potential in space plasma environment is presented.In this technique,a metal conductor is electrically isolated from spacecraft.Potential established at the metal conductor is added to probe’s power module by circuit,thus a reference potential for the probe is established.This technique can be applied to spacecraft such as satellites safely and conveniently,and it can make the ground potential of probe basically equal to the potential of space plasma,avoiding the impact of spacecraft potential on the probe.This technique will be applied to the plasma in situ detector of China’s space station.Through testing,it is verified that the reference potential of-210^+210 V can be built by this technique,and this reference potential range meets the technical requirements of-200^+200 V that space station plasma in situ detector needs.