| 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。 |
| 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 |
| DOI： |
| 分类号:V439 |
| 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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| Application of laser interference in micro-impulse measurement with torsion pendulum |
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Fang Juan1, Hong Yanji2, YeJifei2, Wang Guangyu2
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1.Dept.of Postgraduate,Inst.of Equipment Command and Technology,Beijing 101416,China;2.Dept.of Basic Theories,Inst.of Equipment Command and Technology,Beijing 101416,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-impulses 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 measurement system is of 2×10-8N·s and the range is between 2×10-7 and 0.8×10-5 N·s. |
| Key words: Micro-impulse measurement Torsion pendulum Laser interference Tiny-angle measurement Micro-laser plasma thrusters |
