摘要
为了提升电感式位移传感器的灵敏度,建立了电感式位移传感器的传递模型,通过相关理论计算、采用Matlab数值仿真等方式,分析了线圈匝数、磁极面积以及激励频率等参数变化时对灵敏度的影响,得到了各参数变化对灵敏度大小的影响程度,并据此确定了可行的提升灵敏度的措施。结果表明:增大线圈匝数比增加磁极面积更能提高传感器灵敏度,并且初始气隙的大小对灵敏度的影响比激励频率、线圈匝数等更为明显。采用上述的改进措施可以使传感器的灵敏度得到一定的提升。
To improve the sensitivity of inductive displacement sensors,this work establishes the transfer model for inductive displacement sensors through theoretical calculations and Matlab numerical simulations.The influence of the parametric variation in terms of coil turns,magnetic pole area,and excitation frequency on the sensitivity of the inductive displacement sensors have been investigated.According to the results,pathways for improving the sensitivity have been determined.The results show that increasing the number of turns on the coil is better than increasing the area of the magnetic pole in the improvement of the sensitivity of the sensor.The initial air gap has a significant effect on the sensitivity than the excitation frequency and the number of turns on the coil.By adopting the above-mentioned optimisations,the sensitivity of the sensor can be improved.
作者
王睿
WANG Rui(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Provincial Engineering Technology Research Center for Magnetic Suspension,Wuhan 430070,China)
基金
国家重点研发计划资助项目(2018YFB2000103)
关键词
电感式位移传感器
灵敏度
线圈匝数
激励频率
inductive displacement sensor
sensitivity
coil turns
excitation frequency
