电容层析成像传感器有限元分析及参数优化  

Analysis and Parameter Optimizing of Multi-Electrode Capacitance Transducers Based on Finite Element Method in Electrical Capacitance Tomography System

作　　者：陈德运[1] 李谋遵[1] 郑贵滨[1] 

机构地区：[1]哈尔滨理工大学计算机科学与技术学院,哈尔滨150080

出　　处：《电子器件》2006年第2期427-430,446,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目资助(60572153);国家教育部重点科技项目资助(204043);黑龙江省骨干教师创新计划项目资助(1054G014;10551043);哈尔滨市重点科技攻关项目资助(2005AA1CG035)

摘　　要：以12电极油水两相流电容层析成像系统为研究对象,介绍了电容层析成像的基本原理,利用有限元模型分析传感器各个参数如电极的长度、管壁的厚度、管道与屏蔽罩间的填充材料、径向电极等对其性能的影响,对传感器的结构参数进行选取,并提出评价函数,结合正交方法进行优化,使系统的性能得到明显的改善。The principle of electrical capacitance tomography （ECT） is introduced and the simulation based on the finite element method （FEM） about the sensitivity distribution of 12-electrode capacitance transducers for oil and water two-phase flow system is discussed. The optimal function is presented based on sensitivity distribution which plays an important role in image reconstruction. The influence which the structural parameters of transducers impose on the performance of ECT is studied and the parameter optimizing is achieved by employment orthogonal design method combined with FEM.

关 键 词：电容层析成像 有限元法 电容敏感场参数优化计算机仿真 

分 类 号：TN911.73[电子电信—通信与信息系统]