摘要
基于非线性压磁方程,通过COMSOL有限元仿真平台,分析了片状铁镓合金的压磁效应。仿真研究了不同偏置磁场和不同应力下铁镓合金动态压磁系数的变化。参考悬臂梁特性,利用铁镓合金设计并制作了一种新型的磁致伸缩力传感器。根据电磁学理论和压磁效应,建立了力传感器的测试模型。搭建磁致伸缩力传感器实验平台,通过实验研究了偏置磁场和力对输出特性的影响。通过仿真和实验结果可知,偏置磁场强度为4.5 kA/m时,压磁系数最大值为17.5 T/GPa。传感器的测力范围为0~4 N,在0~2 N内传感器有较高的灵敏度。该传感器具有结构简单,灵敏度高等优点,可满足对力精确感知的要求。
Based on the nonlinear piezomagnetic equation,the piezomagnetic effect of flake Galfenol alloy was analyzed by COMSOL finite element simulation platform.According to the simulation results,the variation of dynamic piezomagnetic coefficient of Galfenol alloy under different bias magnetic fields and stress was studied.According to the characteristics of cantilever beam,a novel magnetostrictive force sensor was designed and fabricated by using Galfenol alloy.Based on the electromagnetism theory and piezomagnetic effect,the measurement model of force sensor was established.The experimental platform of magnetostrictive force sensor was built,and the influence of bias magnetic field and force on output characteristics was experimentally studied.The simulation and experimental results show that when the bias magnetic field is 4.5 kA/m,the piezomagnetic coefficient reaches the maximum value of 17.5 T/GPa.The measuring range of the sensor is 0~4 N,and it possesses a high sensitivity in the range of 0~2 N.The sensor has the advantages of simple structure and high sensitivity,and can meet the requirement of accurate force perception.
作者
李云开
王博文
张冰
Li Yunkai;Wang Bowen;Zhang Bing(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin 300130,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2019年第17期3615-3621,共7页
Transactions of China Electrotechnical Society
基金
国家自然科学基金（51777053）
河北省自然科学基金（E2017202035）资助
关键词
压磁系数
磁致伸缩
非线性本构模型
力传感器
Piezomagnetic coefficient
magnetostriction
nonlinear constitutive model
force sensor
