强激光与粒子束, 2017, 29 (4): 044003, 网络出版: 2017-03-29  

离子推力器工作性能参数控制模型

Work performance parameter control model of ion thruster
作者单位
兰州空间技术物理研究所 真空低温技术与物理国家级重点实验室, 兰州 730000
摘要
为了研究离子推力器工作参数对输出特性的影响,通过离子推力器工作性能参数的理论计算公式,建立起离子推力器输入参数与输出参数的Simulink控制模型,根据模型分别对我国研制的30 cm口径以及20 cm口径离子推力器的工作输出参数进行了理论计算,并通过推力测量试验对理论值进行了比对和分析。比对结果表明: 在推力理论计算过程中引入二价Xe离子比率和束流密度分布推力修正,以及推力均方误差修正后,推力理论值与实测值符合性较好,计算误差小于1 mN,证明了推力修正方法的合理性。
Abstract
In order to research the effect of ion thruster’s work performance parameters on output characteristics, an ion thruster’s input/output work performance parameter control model was built by theoretical equation, which was also used to calculate work performance parameters of the 30 cm diameter ion thruster and the 20 cm diameter ion thruster. Thrust measure experiment was carried out to verify the calculation results. The verification results indicate that, after doubly charged xenon ion ratio, beam current density and thrust minimum mean squared error were introduced in thrust correction, thrust theoretical calculation values are in rough agreement with the experimental results. The calculation error is less than 1 mN compared with the experimental results, which proves that the thrust correction method used in this paper is reasonable. Ion thruster input/output performance parameter control model provides reference to semi-physical simulation modeling process, and it can be used in thruster work performance parameters optimization and in electrical supply parameters and propellant supply parameters confirm during electrical system united experiment as well.

孙明明, 张天平, 郭伟龙, 龙建飞. 离子推力器工作性能参数控制模型[J]. 强激光与粒子束, 2017, 29(4): 044003. Sun Mingming, Zhang Tianping, Guo Weilong, Long Jianfei. Work performance parameter control model of ion thruster[J]. High Power Laser and Particle Beams, 2017, 29(4): 044003.

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