超磁致伸缩作动器结构设计与分析

Structural design and analysis of giant magnetostrictive actuator

以设计一款能长期工作且最大工作位移为50μm、最大输出力为2 kN的新型超磁致伸缩作动器为目的。在分析超磁致伸缩作动器结构及工作原理的基础上,对关键参数进行设计。选取超磁致伸缩材料的最佳预压应力,通过计算确定超磁致伸缩棒的几何参数;同时,为提高作动器的工作效率,对电磁线圈进行优化设计以及关键参数进行分析。利用MATLAB、ANSYS对其进行仿真分析。实验表明,所设计的作动器满足设计要求。其研究结果对超磁致伸缩作动器的结构设计及相关理论计算具有参考价值。

The purpose is to design a new type of giant magnetostrictive actuator that can work for a long time with a maximum working displacement of 50μm and a maximum output force of 2 kN.Based on the analysis of the structure and working principle of giant magnetostrictive actuators,the key parameters are designed.The optimal prestress of the giant magnetostrictive material is selected,and the geometric parameters of the giant magnetostrictive rod are determined by calculation.At the same time,in order to improve the working efficiency of the actuator,the optimal design of the electromagnetic coil and the key parameters are studied.It is simulated and analyzed using MATLAB and ANSYS.Experiments show that the designed actuator meets the design requirements.The research results have reference value for the structure design and related theoretical calculation of giant magnetostrictive actuators.