【摘要】 磁致伸缩材料是一种特殊的智能材料，置于磁场中会发生物理变形。本文利用它的这一特性，设计研制了一用于试验的磁致伸缩作动器。此作动器具有变形大，承载力强和响应速度快等特点。文中详细阐述了作动器的设计步骤及注意事项，最后对此作动器作了动态特性的试验研究。试验结果表明，尽管作动器还存在着弱倍频现象，但基本上满足了设计要求。更多还原

【Abstract】 Magnetostrictive material (Terfenol D) is a special smart material. When placed in a magnetic field aligned with the material′s magnetostrictive axis, it expands quickly and forcefully. Based on its magnetomechanical properties, a megnetostrictive actuator is designed and manufactured, which has advantages of large displacement, high loads and fast action. The actuator′s design steps and points for attention are presented in detail in this paper. Finally, the results of experimental study for its dynamic characteristics indicate that the actuator satisfies the requirements on the whole in spite of effects of weak nonlinearity.更多还原