稀土超磁致伸缩致动器的电-机转换关系  

Electro-Mechanical Conversion for Rare Earth Giant Magnetostriction Actuator

作　　者：黄迷梅[1] 张子义[1] 

机构地区：[1]北京联合大学机械工程学院,北京100020

出　　处：《稀土》2000年第4期68-70,共3页Chinese Rare Earths

基　　金：北京市教委科技发展计划项目!资助课题

摘　　要：作出了磁致伸缩驱动液压元件的物理模型 ,据此模型计算了电 -机转换关系。计算结果表明 ,工作在谐振频率附近时 ,负载刚度对位移的影响不容忽视。设计中应考虑一个较磁致伸缩棒刚度大得多的负载刚度 ,才能获得高精度的位移控制。所给物理模型是具有代表性的负载形式。同时作出了模型参数计算的等效回路图 ,将复杂机械机构计算简化为电回路计算。The physical model of hyaraulic element driven by rare earth giant magnetostriction is given in this paper.According to this model,calculation for the electro mechanical conversion is done.Calculation results show that when working around resonance point,effects of the load stiffness on displacement can not be neglected.In order to obtain high displacement control accuracy,a load stiffness that is greater than that of rare earth giant magnetostrictive rod must be considered in design.The given physical model,in its load form,is typical.The equivalent circuit for model parameter calculation is also given,so a calculation for complicated mechanism could be simplified to a electrical circuit calculation.

关 键 词：稀土 电-机转换 TbDyFe棒 超磁致伸缩材料 

分 类 号：TM27[一般工业技术—材料科学与工程]