摘  要：运用Ansys 12.0软件对一种低频动磁式直线振动电机的振动系统进行了基于有限单元法的模态分析和研究，计算出了该振动系统的前五阶固有频率，通过分析得出了该振动电机在正确运动形式下振动系统的固有频率，为激励线圈电流的频率设计提供依据，该方法可以用于直线振动电机的设计和改良。
关键词： 直线振动电机；模态分析；振型；有限元分析

Abstract: Resonant frequency of the vibrating system of LOA was researched based on ANSYS 12.0 modal analysis. First five resonant frequency was calculated, working frequency of LOA vibrating system which is the foundation of designing current frequency of coils was obtained by researching. This method was proved effective on LOA designing and improving.
Key words: LOA；modal analysis；vibrating mode；FEA