用于LDA系统校准的独特旋转盘  

Unique Rotating Disk for Calibration of LDA System

作　　者：李菁[1] 张永会[1] 陈煜 程元中 

机构地区：[1]长城计量测试技术研究所,北京市100095

出　　处：《航空计测技术》1998年第5期29-30,42,共3页Aviation Metrology & Measurement Technology

摘　　要：分析了激光多普勒测速（LDA）系统校准的必要性，提出了用单一粒子已知的确定速度作为速度标准的新思路。据此专门设计了一种独特的用于LDA系统校准的旋转盘（校准盘）。通过试验验证了该校准盘系统的转速稳定性并证明线速精度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。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.

关 键 词：校准盘 转速 线速度 LDA 速度测量系统 

分 类 号：TH824.06[机械工程—仪器科学与技术]