| 航天器表面充电仿真计算和电位主动控制技术 |
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| 引用本文： | 田立成,石 红,李 娟,张天平.航天器表面充电仿真计算和电位主动控制技术[J].航天器环境工程,2012,29(2):144-149. |
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| 作者姓名： | 田立成 石 红 李 娟 张天平 |
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| 作者单位： | 兰州空间技术物理研究所真空低温技术与物理重点实验室,兰州730000 |
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| 基金项目： | 真空低温技术与物理重点实验室基金（项目编号：9140C5504020704） |
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| 摘 要： | 文章运用等效电路理论推导出随时间变化充电问题的微分方程组,用FORTRAN语言开发了相应的计算机模拟程序,针对强地磁亚暴空间环境分析了地球同步轨道航天器在阴影区和光照区的充电水平。最后计算讨论了采用空心阴极等离子体接触器向航天器外发射电子束作为控制航天器充电水平手段的作用效果。
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| 关 键 词： | 空间等离子体 地磁亚暴 航天器表面充电 等效电路模型 电位主动控制 空心阴极等离子体接触器 仿真计算 |
| 收稿时间： | 9/9/2011 12:00:00 AM |
| 修稿时间： | 2012/3/10 0:00:00 |
Simulation of spacecraft surface charging and active control of spacecraft surface potential |
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| Tian Licheng,Shi Hong,Li Juan and Zhang Tianping.Simulation of spacecraft surface charging and active control of spacecraft surface potential[J].Spacecraft Environment Engineering,2012,29(2):144-149. |
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| Authors: | Tian Licheng Shi Hong Li Juan and Zhang Tianping |
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| Institution: | (Vacuum ＆ Cryogenics Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China) |
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| Abstract: | The time-domain differential equations are derived for spacecraft charging based on the equivalent circuit theory,and a related simulation program is developed with FORTRAN language.Under the worst-case geomagnetic sub-storm conditions,the surface charging levels of spacecraft in sunlight and without sunlight are analyzed.The electron beam ejecting outward from spacecraft as a way of controlling spacecraft surface potential is also analyzed.The calculation result shows that this approach by ejecting electrons from the hollow cathode plasma can effectively keep the spacecraft surface potential under control. |
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| Keywords: | space plasma geomagnetic sub-storm spacecraft surface charging equivalent circuit model active control of potential hollow cathode plasma contactor simulation calculation |
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