基于COMSOL的环状静电传感器灵敏度仿真分析  

Sensitivity Simulation Analysis of Circular Electrostatic Sensor Based on COMSOL

作　　者：程冲 蔡景 王正琳 张振生 CHENG Chong;CAI Jing;WANG Zhenglin;ZHANG Zhensheng(College of Civil Aviation,Nanjing University of Aeronautics and Astronautics)

机构地区：[1]南京航空航天大学民航学院

出　　处：《仪表技术与传感器》2025年第3期6-10,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金青年基金(U52305124);浙江省自然科学基金探索项目(LQ23E050002)。

摘　　要：环状静电传感器的空间灵敏度是传感器的关键参数之一,其数学模型复杂,难以求得解析解,为了分析环状静电传感器在带电磨粒监测方面的灵敏度问题,通过建立静电传感器的有限元模型,并运用COMSOL软件进行仿真分析,以探究磨粒轴向位置、纵向位置、速度以及双磨粒距离等因素对传感器灵敏度的影响,并利用MATLAB对仿真数据进行进一步分析。结果显示:磨粒距离传感器中心越近,传感器的灵敏度越高;而当磨粒在传感器外部时,随着其纵向距离增加,传感器的灵敏度下降;此外,磨粒速度对传感器的灵敏度变化率有影响,双磨粒距离的减小会增加传感器的灵敏度峰值。The spatial sensitivity of circular electrostatic sensors is one of the key parameters of the sensor.Its mathematical model is complex,and it is difficult to obtain an analytical solution.In order to analyze the sensitivity issues of circular electrostatic sensors in the monitoring of charged abrasives,a finite element model of the electrostatic sensor was established,and the COMSOL software was used for simulation analysis to explore the effects of factors such as the axial position of the abrasive,longitudinal position,velocity,and the distance between two abrasives on the sensor's sensitivity.MATLAB was utilized to further analyze the simulation data.The results show that the closer the abrasive is to the center of the sensor,the higher the sensitivity of the sensor is.When the abrasive is outside the sensor,the sensitivity of the sensor decreases as longitudinal distance increases.In addition,the velocity of the abrasive affects the rate of change in the sensor's sensitivity,and the decrease in the distance between two abrasives increases the peak sensitivity of the sensor.

关 键 词：有限元仿真 环状静电传感器 灵敏度 磨粒位置 磨粒速度 双磨粒距离 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]