利用正交试验的电容传感器仿真及优化设计  

Simulation and Optimization of Capacitance Sensor Based on Orthogonal Test

作　　者：王小鑫[1] 闫洁冰[1] 胡红利[1] 高享想[1] 张肖[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049

出　　处：《西安交通大学学报》2013年第2期81-86,共6页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(51177120);国家"863计划"资助项目(2009AA04Z130)

摘　　要：针对电容传感器存在检测场灵敏度分布不均匀及其测量灵敏度低的问题,提出一种基于有限元分析与正交试验设计相结合的方法,分别对二电极、四电极及八电极的电容传感器结构进行优化设计,并对试验结果进行方差分析。通过比较分析各参数对不同电极电容传感器的影响规律,得出同时满足电容传感器检测场灵敏度分布的均匀性和测量灵敏度的最优组合方案。仿真试验表明,随着电极数的增加,检测场区域的灵敏度分布越来越不均匀,电容传感器的测量灵敏度越来越高。通过对优化设计结果进行静态测试试验,得出二电极、四电极、八电极传感器试验数据的方差分别为0.054 9、0.061 3、0.096 3,即灵敏度分布越来越不均匀,同时随着电极数的增加,灵敏度增大。试验结果与仿真计算结果具有较高的一致性,表明此方法所得出的优化结果具有合理性和正确性。Focusing on the poor sensing field sensitivity uniformity and low measuring sensitivity of the capacitance sensor,an approach combining finite element analysis with orthogonal experiment is proposed.In this work,2-electrode,4-electrode and 8-electrode capacitance sensors are optimally designed,and variance analysis is carried out for the test results.The optimum combination schemes,which satisfy the sensing field sensitivity uniformity and measuring sensitivity simultaneously,are obtained by comparing and analyzing the effects of various parameters on different capacitance sensors.The simulations show that with increasing electrode number,the sensitivity distribution of detection field gets more uneven,and the sensitivity of capacitance sensor gets higher,a static test experiment is conducted on these optimized results.With increasing electrode number,the variance of these three kinds of electrode sensor respectively reaches to 0.054 9,0.061 3 and 0.096 3,the experimental results well coincide with the simulations.

关 键 词：电容传感器 正交试验 有限元分析 灵敏度测量 

分 类 号：TM934[电气工程—电力电子与电力传动]