| 激光干涉法在扭摆法测量微冲量中的应用 |
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| 引用本文： | 方娟,洪延姬,叶继飞,王广宇.激光干涉法在扭摆法测量微冲量中的应用[J].推进技术,2010,31(1):119-122. |
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| 作者姓名： | 方娟 洪延姬 叶继飞 王广宇 |
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| 作者单位： | 1. 装备指挥技术学院,研究生院,北京,101416
2. 装备指挥技术学院,基础部,北京,101416 |
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| 基金项目： | 国家“九七三”项目(61328); 国家自然科学基金项目(90916015) |
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| 摘 要： | 介绍了激光干涉法测微小转角的原理及测量方法,提出了采用激光干涉测量微冲量的方法,将激光与靶作用产生的微冲量转化为扭摆的转动角度,通过激光干涉法测量此微小转角从而计算出冲量。相同单脉冲能量下,以PVC+2%C为工质,用扭摆法测量了激光与工质作用产生的微冲量,结果表明该测试系统分辨率为2×10-8N.s,量程为2×10-7～0.8×10-5N.s。
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| 关 键 词： | 微冲量测量 扭摆 激光干涉 小角度测量 激光微推力器 |
Application of laser interference in micro-impulse measurement with torsion pendulum |
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| Fang Juan,Hong Yanji,YeJifei and Wang Guangyu.Application of laser interference in micro-impulse measurement with torsion pendulum[J].Journal of Propulsion Technology,2010,31(1):119-122. |
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| Authors: | Fang Juan Hong Yanji YeJifei and Wang Guangyu |
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| Institution: | FANG Juan1,HONG Yan-ji2,YE Ji-fei2,WANG Guang-yu2 (1.Dept.of Postgraduate,Inst.of Equipment Comm, , Technology,Beijing 101416,China,2.Dept.of Basic Theories,China) |
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| Abstract: | The measurement principle of tiny-angle using laser interference method is introduced. This method is used to measure micro-impulse. The impulse can be obtained by measuring tiny rotation-angle of torsion pendulum. The micro-impul-ses are measured with a torsion pendulum using PVC + 2% C as target under the same single pulse energy condition. The experimental results indicate that the resolution of measurment systems is of 2×10~(-8)N·s and the range is between 2×10~(-7)and 0.8×10~(-5)N·s. |
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| Keywords: | Micro-impulse measurement Torsion pendulum Laser interference Tiny-angle measurement Micro-laser plasma thrusters |
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