基于SVM和ECT的两相流离散相浓度测量  

ECT and SVM based concentration measurement of two-phase flow

作　　者：彭珍瑞[1] 殷红[1] 祁文哲[1] 

机构地区：[1]兰州交通大学机电工程学院,兰州730070

出　　处：《自动化与仪器仪表》2008年第2期72-74,共3页Automation & Instrumentation

基　　金：甘肃省自然科学基金(编号:3ZS062-B25-016);兰州交通大学"青蓝"人才资助项目

摘　　要：利用12电极电容层析成像系统(ECT)传感器和最小二乘支持向量机(LS-SVM),提出了两相流离散相浓度测量的新方法。电容传感器用来获取反应离散相分布的66个电容测量值。LS-SVM用来建立离散相浓度测量模型,模型的输入是66个独立的电容值,输出是离散相浓度值。本方法省去了传统ECT技术测量浓度时的图像重建过程。实验结果表明:该方法是有效的,测量误差在6%以内。Based on 12-electrode Electrical Capacitance Tomography （ECT） sensor and Least Squares Support Vector Machine （LS-SVM）,a new method for phase concentration measurement of two-phase flow was proposed. ECT sensor was used to obtain the 66 capacitance values,which reflected the phase distribution.LS-SVM was applied to establish the model for phase concentration measurement of two-phase flow.In this model,66 capacitance values were the inputs and the concentration was the output.This new method implemented direct concentration measurement of two-phase flow without the need of time-consuming image reconstruction.The experimental results show that it is effective and the measurement error is within 6%.

关 键 词：两相流 最小二乘支持向量机 浓度 电容 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] O359.1[自动化与计算机技术—计算机科学与技术]