Galfenol悬臂梁磁致伸缩式旋转电机设计及有限元分析

Design and finite element analysis of Galfenol cantilever beam driven by magnetostrictive rotary motor

针对压电式惯性冲击旋转驱动器在转速和负载方面的不足,利用Galfenol材料作为驱动源,设计了一种Galfenol悬臂梁磁致伸缩式旋转电机。该旋转电机基于惯性冲击的原理工作,在2种不同的锯齿波电信号的驱动下,可以实现双向旋转,具有响应快、转速快、负载能力强等优点。设计了Galfenol悬臂梁磁致伸缩式旋转电机的结构,采用有限元的方法对该电机的主要部分Galfenol悬臂梁,进行了有限元分析。结果表明当质量块的重量为1 N时,Galfenol悬臂梁可以驱动其移动0.05 mm。

There are such shortages as low speed and insufficient load in the inertial rotary piezoelectric actuator.Using Galfenol material as the driving source,a Galfenol cantilever beam driven by magnetostrictive rotary motor was designed,and it is based on the principle of drive impact.Driven by the electrical signals of two different sawtooth waves,the newly designed rotary motor can achieve such advantages as fast response,fast rotation speed,and strong load capacity.The structure of the Galfenol cantilever beam driven by magnetostrictive rotary motor was designed in the paper,and finite element analysis method was utilized to analyze the Galfenol cantilever beam.The results suggest that Galfenol cantilever beam can drive the mass to move 0.05 mm when its weight is 1 N.