中文摘要：

基于Fe-Ga磁致伸缩材料,设计了一种新型结构的磁致伸缩驱动器.基于材料的磁化模型,应用有限元软件和模态分析技术研究了驱动器的输出特性.研究发现,当对驱动器的2个驱动线圈通入反向电流时,驱动器在径向的谐振频率为1 000 Hz,在谐振频率处的径向输出位移为52 m,轴向输出位移为1.7 m.对磁致伸缩驱动器的2个驱动线圈施加同向电流时,驱动器在轴向的谐振频率为7 808 Hz,在谐振频率处的轴向输出位移为14 m.通过实验研究了磁致伸缩驱动器的输出特性,结果表明实验与仿真计算结果基本一致,证明研制的驱动器具有实用价值.

英文摘要：

A new type of magnetostrictive actuator is designed based on Fe-Ga magnetostrictive material. The output characteristic of the magnetostrictive actuator is analyzed by using the magnetization model, the finite element software and the modal analysis theory. It is found that when the two driving coils of the actuator are connected to opposite current,the radial resonance frequency is 1 000 Hz, and the output displacements in radial and axial directions are 52 m and 1.7 m, respectively. When the same direction current is applied to the two driving coils of the magnetostrictive actuator, the axial resonance frequency is 7 808 Hz, and the displacement at the resonant frequency is 14 m. The output characteristic of the magnetostrictive actuator was studied by experiments, and the experimental result was in agreement with the simulation results. It is proved that the developed actuator is of practical value.