| 引用本文: | 于达仁,崔凯,刘辉,曾明,蒋文嘉.用于引力波探测的微牛级霍尔电推进技术[J].哈尔滨工业大学学报,2020,52(6):171.DOI:10.11918/201911131 |
| YU Daren,CUI Kai,LIU Hui,ZENG Ming,JIANG Wenjia.Micro-newton hall electric propulsion technology for gravitational wave detection[J].Journal of Harbin Institute of Technology,2020,52(6):171.DOI:10.11918/201911131 |
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| 摘要: |
| 为满足空间引力波探测卫星无拖曳控制所需的微牛级推力宽范围连续可调的推进需求,依据霍尔电推进工作原理,分析微牛级霍尔推力器的设计理念,并经过一系列的推力器特征尺寸优化研究,设计了出口直径4 mm、通道长度30 mm的微牛级会切型霍尔推力器.实验测试结果表明:该型推力器可实现推力0.2~112.7 μN的连续可调输出,满足引力波探测任务对推力器推力输出范围的需求.为进一步改善推力噪声等推力器动态性能指标,开展了推力器控制系统设计和仿真研究,并根据无拖曳控制原理建立无拖曳卫星仿真系统,对微牛级霍尔推力器应用于引力波探测任务的可行性进行仿真评估.推力器控制和无拖曳卫星的仿真结果表明:推力器闭环控制可有效降低推力噪声,提高推力输出快速性和精度,还可大幅提升非保守力补偿精度,使航天器与测试质量之间的位移误差满足引力波探测计划的无拖曳控制精度指标.该型微牛级会切型霍尔推力器可满足引力波探测任务的推进需求,具备应用于此类空间科学任务的可能. |
| 关键词: 引力波探测 无拖曳控制 微牛级电推进 霍尔推力器 推力噪声 推力器控制 |
| DOI：10.11918/201911131 |
| 分类号:V439 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(11927812)；先进空间推进技术实验室开放基金课题(LabASP-2018-13) |
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| Micro-newton hall electric propulsion technology for gravitational wave detection |
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YU Daren,CUI Kai,LIU Hui,ZENG Ming,JIANG Wenjia
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(School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)
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| Abstract: |
| To meet the micro-newton adjustable thrust requirements of gravitational wave detection tasks, the design concept of micro-newton hall thrusters is analyzed based on the working principle of this electric propulsion technology. After a series of research of thruster size optimization, a micro-newton Hall electric thruster with outlet diameter being 4 mm and the length of 30 mm is designed. The experimental results of the thruster show that the thruster can achieve the continuous adjustable thrust output 0.2~112.7 μN, which meets the requirements of the gravitational wave detection missions. To further improve the dynamic performance of the thruster, the design and simulation of thruster control system are carried out, and the drag-free satellite simulation system is established based on the principle of drag-free control. Simulation results show that the closed-loop control of the thruster can not only effectively reduce the thrust noise and improve the response speed and accuracy of thrust output, but also improve the compensation accuracy of non-conservative forces, so that the displacement errors between spacecraft and test mass could satisfy the drag-free control accuracy indexes of gravitational wave detection tasks. Therefore, this kind of Hall thruster can meet the propulsion requirements of gravitational wave detection tasks and has the possibility to be applied to such space science missions. |
| Key words: gravitational wave detection drag-free control micro-newton electric propulsion hall thruster thrust noise thruster control |
