超磁致伸缩力传感执行器磁路优化设计与分析  

Optimal design and analysis of magnetic circuit for giant magnetostrictive force sensing actuator

作　　者：王兴东[1,2] 朱俊龙 鲁光涛 WANG Xingdong;ZHU Junlong;LU Guangtao(Key Laboratory of Metallurgical Equipment and Control Technology,Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,湖北武汉430081 [2]武汉科技大学机械传动与制造工程湖北省重点实验室,湖北武汉430081

出　　处：《传感器与微系统》2024年第1期115-119,共5页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(51808417)。

摘　　要：以超磁致伸缩力传感执行器为研究对象,基于磁致伸缩与涡流损耗理论,应用COMSOL有限元软件进行磁场分析,系统地研究了导磁体参数对磁通密度与涡流的影响规律。为增大磁通密度、减小涡流损耗,以超磁致伸缩棒中轴线上磁通密度均匀度为评价标准,优化了导磁体参数,并将导磁体分区绝缘。静、动态磁场下与未优化时实验结果进行对比,结果表明:静磁场中优化后的磁通密度均值提升了0.0161T,均匀度提升了4.5%;动态磁场中,分区绝缘可有效减少涡流损耗,优化后的力传感器灵敏度提升了5.76%。Taking the giant magnetostrictive force sensing actuator as the research object,based on the theory of magnetostriction and eddy current loss,the COMSOL finite element software is used for magnetic field analysis,and the influence law of the parameters of the magnetizer on the magnetic flux density and eddy current is systematically studied.In order to increase the magnetic flux density and reduce the eddy current loss,the uniformity of the magnetic flux density on the central axis of the giant magnetostrictive rod is used as the evaluation standard,and the parameters of the magnetizer is optimized and it is partitioned and insulated.Comparing the experimental results under static and dynamic magnetic fields with those without optimization,result shows that the mean value of optimized magnetic flux density in the static magnetic field is increased by 0.0161 T,and the uniformity is increased by 4.5%;in a dynamic magnetic field,partitioned insulation can effectively reduce eddy current loss,and the sensitivity of the optimized force sensor is increased by 5.76%.

关 键 词：超磁致伸缩执行器 涡流损耗 磁路优化 分区绝缘 有限元仿真 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TM27[自动化与计算机技术—控制科学与工程]