Design and fabrication of a full elastic sub-micron-Newton scale thrust measurement system for plasma micro thrusters

作     者：Zhongkai Zhang Guanrong Hang Jiayun Qi Zun Zhang Zhe Zhang Jiubin Liu Wenjiang Yang Haibin Tang 张仲恺;杭观荣;齐佳运;张尊;章喆;刘久镔;杨文将;汤海滨

作者机构：School of Space and EnvironmentBeihang UniversityBeijing 100191People's Republic of China Shanghai Institute of Space PropulsionShanghai Engineering Research Center of Space EngineShanghai 201112People's Republic of China School of AstronauticsBeihang UniversityBeijing 100191People's Republic of China The Institute of Space SystemsUniversity of StuttgartStuttgart D-70569GermanyBeijing 100083People's Republic of China Key Laboratory of Spacecraft Design Optimization&Dynamic Simulation TechnologiesMinistry of EducationBeijing 100083People's Republic of China Laboratory of Space Environment Monitoring and Information ProcessingMinistry of Industry and Information TechnologyBeijing 100083People’s Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2021年第23卷第10期

页      面：29-39页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 082502[工学-航空宇航推进理论与工程] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0825[工学-航空宇航科学与技术] 0702[理学-物理学] 

基　　金：supported by the Shanghai Engineering Research Center of Space Engine(No.17DZ2280800) 

主　　题：plasma thruster micro-thrust measurement torsional pendulum 

摘      要：In this work,a force measurement system is proposed to measure the thrust of plasma microthruster with thrust magnitude ranging from sub-micro-Newtons to hundreds *** thrust measurement system uses an elastic torsional pendulum structure with a capacitance sensor to measure the displacement,which can reflect the position change caused by the applied force perpendicular to the pendulum *** the open-loop mode,the steady-state thrust or the impulse of the plasma micro-thruster can be obtained from the swing of the pendulum,and in the closed-loop mode the steady-state thrust can be obtained from the feedback force that keeps the pendulum at a specific *** thrust respond of the system was calibrated using an electrostatic weak force generation *** results show that the system can measure a thrust range from 0 to 200μN in both open-loop mode and closed-loop mode with a thrust resolution of 0.1μN,and the system can response to a pulse bit at the magnitude of 0.1 m N s generated by a micro cathode arc *** background noise of the closed-loop mode is lower than that of the open-loop mode,both less than 0.1 m N/Hz in the range of 10 mHz to 5 Hz.