射频离子推力器放电与引出特性调节规律仿真与试验研究

推进技术 ›› 2019, Vol. 40 ›› Issue (1): 232-240.

• 电推进和其它推进 • 上一篇

射频离子推力器放电与引出特性调节规律仿真与试验研究

吴辰宸,孙新锋,顾左,贾艳辉

兰州空间技术物理研究所真空技术与物理国防科技重点实验室，甘肃兰州 730000,兰州空间技术物理研究所真空技术与物理国防科技重点实验室，甘肃兰州 730000,兰州空间技术物理研究所真空技术与物理国防科技重点实验室，甘肃兰州 730000,兰州空间技术物理研究所真空技术与物理国防科技重点实验室，甘肃兰州 730000

发布日期:2021-08-15
作者简介:吴辰宸，博士生，工程师，研究领域为空间电推进技术与工程。E-mail:wuchenchen2008kaka@163.com 通讯作者:孙新锋，博士，工程师，研究领域为空间电推进技术与工程。
基金资助:
国家自然科学基金(11702123)。

Numerical and Experimental Research of Optimal Regulation with Discharge and Beam Current Extraction for RIT

National Key Laboratory of Science and Technology on Vacuum Technology and Physics，Lanzhou Institute of Physics，Lanzhou 730000，China,National Key Laboratory of Science and Technology on Vacuum Technology and Physics，Lanzhou Institute of Physics，Lanzhou 730000，China,National Key Laboratory of Science and Technology on Vacuum Technology and Physics，Lanzhou Institute of Physics，Lanzhou 730000，China and National Key Laboratory of Science and Technology on Vacuum Technology and Physics，Lanzhou Institute of Physics，Lanzhou 730000，China

Published:2021-08-15

摘要/Abstract

摘要： 获得射频离子推力器放电与引出特性调节规律，是制定性能调节控制优化算法的核心问题。为了获得射频离子推力器放电与引出特性，采用数值计算与试验研究的手段，对 LRIT-40射频离子推力器放电与引出特性调节规律开展了研究。研究结果表明:模型能够正确描述放电与引出特性调节规律；射频功率适合作为精调参数，用于连续平滑地调节性能；屏栅电压调节存在明显拐点，当屏栅电压低于拐点，可配合射频功率对性能进行精调；当屏栅电压高于拐点，适合作为快速响应调节参数； 65W～85W射频功率、 800V～1500V屏栅电压能够实现推力 1.5mN～4.7mN，比冲 1300s～3920s宽范围调节，制定性能调节优化控制算法时，应根据需要选取最小参数调节区间。

关键词: 离子推力器；电参数；性能调节；流体模型

Abstract: The kernel of formulating the performance regulation optimal control algorithm is to obtain thevariation of discharge and beam current extraction characterizations of RF Ion thruster(RIT). To obtain the dis. charge and beam current extraction characterizations of RIT，the discharge and beam current extraction character.izations of LRIT-40 have been studied by the numerical and experimental methods in this paper. The simulationresults agree well with the experimental results，which mean that the numerical model can be applied to the dis.charge and beam current extraction investigations for kinds of RF Ion thruster. Further researches reveal that theRF power which as a fine adjustment parameter is suitable for the continuous and smoothing control of the thrusterperformance. Meanwhile，the screen voltage which has an adjusted turning can be used to the performance man.agement as well as the RF power，when the voltage is lower than this turning point. But if the screen grid voltage is higher than that turning point，it fits for the fast adjustment parameters. In addition，the ranges of thrust from1.5mN to 4.7mN and the specific impulse from 1300s to 3920s can be achieved with the RF power from 65W to85W and the screen grid voltage from 800V to 1500V. And the parameters adjustment interval should be as smallas possible according to the optimal control algorithm in the practice application.

Key words: Ion thruster；Electrical parameters；Performance tuning；Fluid model

吴辰宸,孙新锋,顾左,贾艳辉. 射频离子推力器放电与引出特性调节规律仿真与试验研究[J]. 推进技术, 2019, 40(1): 232-240.

WU Chen-chen,SUN Xin-feng,GU Zuo,JIA Yan-hui. Numerical and Experimental Research of Optimal Regulation with Discharge and Beam Current Extraction for RIT[J]. Journal of Propulsion Technology, 2019, 40(1): 232-240.

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射频离子推力器放电与引出特性调节规律仿真与试验研究

Numerical and Experimental Research of Optimal Regulation with Discharge and Beam Current Extraction for RIT

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