Research on the principle of torque measurement using laser doppler technique 一种利用激光多普勒技术测量扭矩的原理研究
The turbulence properties of annular space in a cyclone were investigated by using the laser doppler velocimetry 摘要采用激光多普勒测速系统测试了蜗壳式旋风分离器内的流场，分析了环形空间内的湍流特性。
In order to improve the frequency stabilization of the doppler modulator , a series of affecting factors are considered in depth and optimized in the aspects of optics , mechanics and electronics 摘要为了提高激光多普勒调制器调制频率的稳定度，通过从光学、机械、电子学等方面的优化，对影响多普勒调制器的各种因素进行了深入的研究。
Compared with traditional contact flow measurement methods , presents the non - contact flow measurement methods , and emphases the application of laser doppler anemometry ( lda ) and particle image velocimetry ( piv ) to flow field measurement 摘要与传统接触式流量测试方法相比较，介绍了非接触式流量测试方法，重点介绍了激光多普勒技术( lda )和粒子图像测试技术( piv )在流场测试中运用的原理。
Abstract : in this paper , the fundamentals and method of longitudinal displace mentmeasarement utilizing laser doppler effect are introduced . the factors influencing the affecting accuracy are expounded . moreover , the theory analysis and experiment - based methods are offered to improve the accuracy . this study can be applied in analyzing the surface profile and distortion , which is very important in theory and practice for the fields of aviation , mechanical and architecture industries 文摘:介绍了激光多普勒纵向位移测量的基本原理和方法,阐述了影响测量精度的要素,并在理论分析和实验的基础上,提出了改进措施.该项研究可应用于分析物体表面轮廓和变形状况,对航空、机械、建筑等工业有重要的理论意义和实用价值
This article has a particular research on three kind of gas / liquid coaxial nozzles for their flow performance and atomization performance under cold - flow - simulated experiment with the supply of laser doppler technology , and the measurement of the drop parameter and combustion performance under normal pressure and burning condition 本文应用激光多普勒技术对三种气液同轴模型喷嘴的流量特性和雾化特性进行了冷流模拟实验研究，并在常压燃烧条件下对其喷雾流的液滴参数和燃烧性能进行了实验测量。
Laser doppler velocimeter ( ldv ) is a precise instrument based on the theory of laser doppler effect with no - touch measurement capability , quick responsibility , high precision , wide measurement range , multiple dimension measurement and direction judgement ability . ldv is applied extensively in the field of science research & education and industrial measurement . in this thesis , we researched on the high - precise signal processing in ldv 激光多普勒测速仪( ldv )是根据激光多普勒效应研制而成的一种精密测速仪器,具有非接触测量、动态响应快、分析精度高、测量范围宽、可测多维速度和判别速度方向等优点,被广泛应用于科研教育领域和工业测量领域。
Abstract : in this paper , the problems of the window set - up , the forward receiving method by mirror and the way of side direction receiving , when ldv is used to measure the velocity of water flow inside a circular tube , are discussed and some practical experience in the measurement is summarized 文摘:使用二维激光多普勒测速仪( ldv )对圆管中水流进行测速时，对于窗口的设置、利用反射镜前向接收的方法和侧向接收方式等问题,本文进行了探讨，并总结了测量中的一些实际经验。
