用于LDA系统校准的独特旋转盘

分析了激光多普勒测速系统校准的必要性，提出了用单一粒子已知的确定速度标准的新思路。据此专门设计了一种独特的用于ＬＤＡ系统校准的旋转盘。通过试验验证了校准盘系统的转速稳定性并证明了线速精度伯均达到或优于设计参数的要求；所以，校准盘的线速度可作为参考速度与ＬＤＡ系统或其它光学风速计的测量速度进行比较，并对上述仪器进行评估。

Unique Rotating Disk for Calibration of LDA System

This paper analyzes the necessity for the calibration of LDA system. Proposing a newconcept of using a known definite speed of a single particle as velocity reference, according to that an unique rotating disk for calibrating LDA system (calibrating disk ) is specially designed. It is verified experimentally that both stability of rotating speed and accuracy of linear velocity of this calibrating disk system have achieved or exceeded the desire of designing parameters. Therefore, linear velocity of calibrating disk can be considered as a reference velocity to make comparison with the velocities and evaluation measured by an LDA system or other optical anemometers.