摘要
介绍了超磁致伸缩材料的伸缩现象并针对试验中涉及到的稀土磁致伸缩材料的动态特性 ,采用乘积型最小二乘法拟合出二元曲面S(H ,P)的函数式并计算出它的动态磁致伸缩量
Telescopic principle of the great magnetostrictive material was summarized.The dynamic characteristic curves of rare-earth materials used in experiments were obtained by measuring Terfenol bar,from which the formula S(H,P) was abstracted using least square surface fitting.Then Magnetostrictive changes can be calculated,providing the preliminary information needed for the design of magnetostrictive actuator.
出处
《包头钢铁学院学报》
2004年第2期151-154,共4页
Journal of Baotou University of Iron and Steel Technology
基金
内蒙古科技攻关项目(20010109)
关键词
磁致伸缩
动态特性
曲面拟合
Magnetostriction
dynamic characteristic
surface fitting
