| 双单摆式微推力测量系统的研究 |
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| 引用本文： | 边星,;邵明学,;杨福全,;张海鹏.双单摆式微推力测量系统的研究[J].真空与低温,2014(3):136-139. |
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| 作者姓名： | 边星 ;邵明学 ;杨福全 ;张海鹏 |
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| 作者单位： | [1]首都师范大学物理系,北京100028; [2]中国科学院应用数学研究所,北京100190; [3]兰州空间技术物理研究所,甘肃兰州730000 |
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| 摘 要： | 为了实现空间微推力器的高精度推力测量,提出了一种电容桥式差分读出的双单摆推力测量方案,其测量频带从10-3Hz～0.016 Hz,可实现分辨率为0.1μN,量程1 mN的微推力测量。与意大利帕多瓦大学设计的双单摆微推力差分测量系统相比,方案具有更强的共模抑制能力,操作简单易行。
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| 关 键 词： | 微推进器 双单摆 共模抑制 |
STUDY OF MICRO-THRUST MEASUREMENT USING DOUBLE PENDULUM |
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| Affiliation: | BIAN Xing , SHAO Ming-xue , YANG Fu-quan, ZHANG Hai-peng( 1. Department of Physics, Capital Normal University, Beijing 100028, China; 2. Institute of Applied Mathematics, Chinese Academy of Sciences, Beijing 100190, China; 3. Lanzhou Institute of Space Technology and Physics, Lanzhou Gansu 730000, China) |
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| Abstract: | In order to test and calibrate electric propeller thrust with a resolution of 0. 1 μN,a design using two pendulums was propased. By subtracting the signal of the reference pendulum from the signal of measuring pendulum,most common mode noise can be rejected. By adopting capacity-bridge as displacement sensor,force from 0. 1 μN to 1 mN and frequency from 10- 3Hz to 0. 016 Hz can be measured to an accuracy of 0. 1 μN. |
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| Keywords: | micro-thruster double pendulum differential mode measurement |
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