PIV系统测量误差的评价方法研究

The Evaluate Method Research of PIV System Measurement Error

摘要:

通过解决高速高精度的转速控制、安全性控制等技术问题研制了PIV基准速度场系统,最高速度达200m/s,且达到了可用于对PIV系统标定的误差要求；介绍了利用基准速度系统对PIV测量误差评价的实验方法,解决了示踪粒子模拟、体激光投射的PIV测量方法等关键技术问题,并完整的介绍了实验的流程；通过PIV系统误差来源分析、速度基准系统不确定度分析以及PIV测量结果分析等完整的介绍了数据分析的方法与流程,得到了1套PIV设备的误差标定结果。

Abstract:

This paper develops a standard PIV velocity field system by solving the technical problems of high speed and high precision revolution control as well as the security control. The system’s maximal speed up to 200m/s, and the uncertainty is up to the demand which can be used to PIV system calibration. The experimental method of the PIV measurement errors evaluation using the standard velocity field system is introduced, solving key techniques such as particle simulation and stereoscopic laser projection, and introducing the whole test process. Introduction of the method and process of data analysis is presented by analyzing the measurement error source of PIV system, the uncertainty of standard velocity and the result of PIV experiment. Obtain the error calibration result of a PIV system.