一种电磁作动器的有限元分析与测试  

Finite Element Analysis and Dynamic Characteristic Test of an Electromagnetic Actuator

作　　者：范威[1] 郭云松 章艺[1] 张志谊[1] 

机构地区：[1]上海交通大学振动冲击噪声研究所,上海200240 [2]中国船舶重工集团第七零四研究所,上海200031

出　　处：《噪声与振动控制》2008年第3期27-28,88,共3页Noise and Vibration Control

摘　　要：对一种电磁作动器进行有限元建模与模态分析,计算得到了作动器的动态特征参数,通过改变弹簧的几何参数使作动器的一阶固有频率低于20Hz,而输出力在20-500Hz内无共振峰,有利于进行振动控制。实测的频率响应表明有限元的分析结果是合理的,作动器的频率响应在20-3000Hz内没有共振峰,满足性能要求。The finite element model of an electromagnetic actuator is established and its dynamic characteristics are obtained with modal analysis. By adjusting the geometric parameters of springs, the first natural frequency of the actuator is kept below 20Hz. The specially designed structure ensures that no resonance peaks occur between 20Hz and 500Hz, which is an expected performance and is beneficial to vibration control. The measured frequency response shows that the finite element model is accurate and the frequency response of the actuator output force has no resonance peaks within 20-3000Hz exactly, fully meeting the performance requirement.

关 键 词：振动与波 电磁作动器 有限元 模态分析 

分 类 号：TH113[机械工程—机械设计及理论] TB115[理学—数学]