微机械谐振陀螺的有限元分析  

Finite element analysis of the micromechanical resonant gyroscope

作　　者：朱一纶[1] 王寿荣[1] 裘安萍[1] 

机构地区：[1]东南大学仪器科学与工程系,南京210096

出　　处：《东南大学学报（自然科学版）》2004年第1期38-41,共4页Journal of Southeast University：Natural Science Edition

摘　　要：依据微机械谐振陀螺的结构和工作原理 ,利用ANSYS有限元仿真软件对微机械谐振陀螺的设计进行了计算和仿真 .首先计算了陀螺的驱动模态固有频率和检测模态的固有频率 ,分析了在检测方向的输出位移、哥氏力与输入驱动信号频率之间的关系 ,在这基础上 ,得出当驱动模态的固有频率与检测模态的固有频率比较接近时 ,输出哥氏力灵敏度较大 .同时还分析了内框架梁与外框架梁对陀螺驱动模态与检测模态固有频率的影响 ,并以此为基础 。The vibratory characteristics of the gyroscope were simulated and calculated with the finite element software ANSYS based on structure and work principle of a micromechanical resonant gyroscope. The natural frequencies in drive mode and sense mode of gyroscope were calculated, the relation between displacement, Coriolis force in sense direction and frequency of input exciting force were analyzed, the result is that output Coriolis force is more when the drive mode natural frequency is closer to the sense mode natural frequency. The parameters of gyroscope beam's influence on natural frequencies in drive mode and sense mode were analyzed, a method for adjusting the natural frequency difference between drive mode and sense mode was proposed.

关 键 词：陀螺 仿真 谐振频率 

分 类 号：V666.12[航空宇航科学技术]