超磁致伸缩力传感器的模型研究  

Model study of giant magnetostritive force sensor

作　　者：樊长在[1] 杨庆新[1] 闫荣格[1] 杨文荣[1] 刘福贵[1] 

机构地区：[1]河北工业大学电磁场与电器可靠性省部共建国家重点实验室培育基地,天津300130

出　　处：《传感器与微系统》2007年第3期40-42,共3页Transducer and Microsystem Technologies

基　　金：河北省自然科学基金资助项目(E2005000017;503028);天津市自然科学基金资助项目(05YFJMC06000)

摘　　要：磁致伸缩逆效应是稀土超磁致伸缩材料的一个重要应用特性,应用磁致伸缩逆效应可以制作超磁致伸缩力传感器,基于能量变分原理,建立了超磁致伸缩力传感器的有限元模型。应用该模型计算了超磁致伸缩力传感器空气隙中的磁感应强度和磁致伸缩棒上施加力的关系,并与实验值进行了比较。计算结果与实验结果符合较好,表明建立的超磁致伸缩力传感器的有限元模型是有效的。Inverse magnetostritive effect is an important application characteristic of rare-earth giant magnetostrictive materials. According to the inverse magnetostritive effect of rare-earth giant magnetostrictive materials,a giant magnetostritive force sensor can be made. A finite element model,which is based on the energy functional is presented . Using the proposed model,the relation between the magnetic flux density in the air of the giant magnetostrictive force sensor and the value of force applied on the magnetostrictive rod is calculated. The obtained results are compared with the measured ones to examine the validity of the proposed model Satisfactory agreements are achieved. This indicates that the proposed finite element model is valid,

关 键 词：稀土超磁致伸缩材料 磁致伸缩逆效应 力传感器 有限元模型 

分 类 号：TM27[一般工业技术—材料科学与工程]