基于激光多普勒原理的极低风速测量实验

徐大川; 龙彦志; 李玉栋

doi:10.13224/j.cnki.jasp.2020.06.013

基于激光多普勒原理的极低风速测量实验

doi: 10.13224/j.cnki.jasp.2020.06.013

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出版历程
- 收稿日期: 2019-11-05
- 刊出日期: 2020-06-28

Experiment of extremely low wind velocity measurement based on laser Doppler

1.
Facility Design and Instrumentation Institute,China Aerodynamics ,Research and Development Center,Mianyang Sichuan,621000,China
2.
Chengdu Aviation Instrument Company Limited,Aviation Industry Corporation of China Limited,Chengdu 610000,China

摘要

摘要: 介绍了利用激光多普勒效应进行风速测量的原理及定点遥测原理，分析了探测气溶胶颗粒大小的要求，并以此搭建了一套极低风速测量系统。同时分析了系统的测速精度，以及安装角度对测量结果的影响。最后分别开展了转台实验、直线导轨实验和风洞实验，实验结果表明，该极低风速测量系统的测量误差基本可以控制在001 m/s以内，当风洞工作介质为未经处理的环境空气时，系统可以获得稳定可靠的信号，测量结果与高性能仪器十分接近。
- 激光多普勒 /
- 极低风速 /
- 气溶胶 /
- 误差分析 /
- 风洞实验
Abstract: The principles of laser Doppler effect and telemetry were introduced, and the requirement for the size of aerosol particles was analyzed. A low wind velocity measurement system was established, and through which the measurement accuracy and influence of installation angle were analyzed. The experiments of rotary table, linear guideway and wind tunnel were carried out. The results verified the analysis and proved that the measurement accuracy was better than 001 m/s by experimental data. The measurement system can obtain stable and reliable signal when the medium in wind tunnel was conventional air, and the measurement results were very close to the high-performance instrument.
- laser Doppler /
- low wind velocity /
- aerosol /
- error analysis /
- ,wind tunnel experiment

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