小波变换在两相流速度测量中的应用

Measuring Solid Velocity of Two-Phase Flow Based on Wavelet Transform

介绍一种利用空间滤波和小波变换处理两相流信号的基本方法 ,首先研究电容传感器的空间滤波效应 ,并找出固体速度和带宽之间的关系 ,然后利用小波变换的滤波特性 ,确定传感器的带宽 ,进而求出固体速度·最后给出对实际测量信号的处理结果·

The essential method for processing two phase flow signals was described based on spatial filter and wavelet transform. The spatial filtering effect of capacitance sensors was studied. The relationship in solid velocity and band width was found. The capacitance sensors width of pass band is gained by using the nature of wavelet transform filtering. The solid velocity is obtained. The processing results of practical measured signals were given.