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Micro-impulse torsion device for differential measurement of laser interferometry

A technology of laser interference and differential measurement, which is used in measurement devices, optical devices to transmit sensing components, force/torque/work measuring instruments, etc. High precision and accurate effect of laser micro-impulse measurement

Active Publication Date: 2010-06-23
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a laser interferometry differential measurement micro-impulse torsion device to solve the problems of low precision, defocus, and translational motion caused by impact loading in the existing torsion

Method used

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  • Micro-impulse torsion device for differential measurement of laser interferometry
  • Micro-impulse torsion device for differential measurement of laser interferometry
  • Micro-impulse torsion device for differential measurement of laser interferometry

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Embodiment Construction

[0028] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0029] Such as figure 1 As shown, the torsion part of the laser interferometry differential measurement micro-impulse torsion device of the present invention includes: a vertical bar 2, an upper cross bar 3 and a lower cross bar 4. Shaped frame, inclined beam 16, lifting adjustment mechanism 15 and translation adjustment mechanism 14; A pendulum wire 5 is suspended between the upper cross bar 3 and the lower cross bar 4 of the shaped frame, and the pendulum beam 6 perpendicular to the pendulum wire 5 is fixed in the middle part of the pendulum wire 5, and the pendulum beam 6 is fixed between the pendulum wire 5 and the pendulum beam 6 by the clip in the middle part of the pendulum beam. The wire mechanism is fixed, the ablation target 7 is installed at one end of the pendulum beam 6, and the counterweight 8 is installed at the other end, the near-a...

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Abstract

The invention discloses a micro-impulse torsion device for differential measurement of laser interferometry, which solves the problems of low precision of torsion, defocus, and translation caused by impact force loading. Including the torsion part and the laser interference part; the torsion part includes a vertical frame, an upper cross bar and a lower cross bar, an oblique beam, a lifting adjustment mechanism and a translation adjustment mechanism; between the upper cross bar and the lower cross bar of the shaped frame The pendulum wire is suspended between the wires, and the middle part of the wire is fixed with a pendulum beam perpendicular to the wire. The vertical rod is fixed on the upper end of the inclined beam through the lifting adjustment mechanism. The lower end of the inclined beam is installed on the translation adjustment mechanism, and the translation adjustment mechanism is fixed on the test bench. ; The laser interference part includes beam expanders, reflectors, beam splitters, He-Ne lasers for generating interference beams, photodetectors and signal processing terminals. The measuring range of the device system of the invention is reasonable, the measurement accuracy is higher, the measurement process period is short, and the high-precision laser micro-pulse measurement is realized.

Description

technical field [0001] The invention belongs to the technical field of space propulsion, and relates to a micro-impulse measuring device for laser micro-propelling. Background technique [0002] Laser micro-propulsion uses laser as the power to ablate the working medium to generate impulse, and realize the attitude and orbit control of the spacecraft. The impulse measurement of laser micro-propulsion is crucial to the study of laser micro-propulsion technology. The impulse range generated by laser micro-propulsion is usually in the range of 10 -6 ~10 -4 Between the N·s level, the impulse measurement requires high precision, fast response, and large range (across three orders of magnitude), and the measuring device needs to be specially designed to meet the requirements. [0003] At present, among the micro-impulse test methods publicly reported at home and abroad, the most concerned is the torsion measurement method. The torsion pendulum was originally a device for measu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00G01J11/00G01D5/26
Inventor 叶继飞金星洪延姬王广宇文明窦志国李倩崔村燕黄辉李南雷
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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