两相流ECT系统的自寻增益数控放大器设计  

Design of self-selecting gain digital-control amplifier for two-phase flow electrical capacitance tomography

作　　者：苗利[1] 刘存[1] 王举[2] 

机构地区：[1]沈阳工业大学信息科学与工程学院,辽宁沈阳110023 [2]沈阳市产品质量监督检验所,辽宁沈阳110021

出　　处：《沈阳工业大学学报》2003年第4期320-322,共3页Journal of Shenyang University of Technology

摘　　要：在两相流电容层析成象(ECT)系统中,由于两相流体的多样性、流型及相分布的复杂性,使得被测介质的介电常数变化范围很大,这就要求采集处理电路的放大部分的增益具有宽量程来适应不同参数的两相流体.所提出的高精度自寻增益数控放大器,很好地解决了这些问题.In twophase flow electrical capacitance tomography system, because of twophase flow's diversity,regimes, and complexity of component, it makes the object to be measured have wide range permittivity, which needs wide range for the gain of data collection and conditioning circuit's amplify part to adjust twophase flow of different phases. This paper puts forward a high precision and selfselecting gain digitalcontrol amplifier,and can resolve above problems.

关 键 词：两相流 介电常数 电容层析成象 自寻增益 数据采集处理 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]