独立成分分析在两相流速度测量中的应用

The Application of Independent Component Analysis (ICA) to Velocity Measurement of Two-phase Flow

文中提出一种基于独立成分分析和相关法测量两相流速度的方法。首先介绍独立成分分析的基本原理,然后利用独立成分分析分别分离出上游和下游传感器的两相流混合信号,并据此画出对应两相流信号的相关函数曲线,得到不同速度信号的渡越时间。最后给出仿真实验的处理结果。

The essential method for measuring velocity of two-phase flow signals is described based on independent component analysis （ICA） and cross correlation method. Firstly the principle of ICA is presented. Secondly individual signals are extracted from mixture signals of two phase flow of upstream and downstream sensors based on ICA respectively. Then on the basis of this results the cross correlation curves of corresponding two-phase flow signals are drawn. The transition times of different velocity signals are found. Finally simulation experiment results are given.