全金属固态振动陀螺振子特性仿真分析  

Simulative analysis of vibrator characteristics of all-metal solid-state vibrating gyro

作　　者：周建欣 刘洪[1] 谢帅 祝正原 于东明 ZHOU Jianxin;LIU Hong;XIE Shuai;ZHU Zhengyuan;YU Dongming(Beijing Key Laboratory of High Dynamic Navigation Technology,Beijing Information Science&Technology University,Beijing 100101,China)

机构地区：[1]北京信息科技大学高动态导航技术北京市重点实验室,北京100101

出　　处：《传感器与微系统》2023年第11期34-37,共4页Transducer and Microsystem Technologies

基　　金：北京市自然科学基金资助项目(4214071)。

摘　　要：设计了一种具有小体积、抗高过载、高Q值等特点的新型金属陀螺,即全金属固态振动陀螺(ASVG)。利用仿真软件建立振子三维度的动态模型,通过有限元分析软件进行模态分析,得到振子的固有频率及不同频率对应的振动形状;并通过谐响应分析,得到振子在特定频率下的结构响应;对振子进行过载特性仿真分析,得出振子在不同过载下的最大应力值及最大位移值。最终得出一种直径为10 mm,固有频率为10566 Hz,模态隔离度大于1000 Hz,并且能够承受不小于16×10^(4)gn的过载冲击的新型金属振子。A new type of metal gyroscope namely all-metal solid-state vibrating gyro(ASVG)with the characteristics of small size,high overload resistance,high Q value,etc.is designed.Simulation software is used to establish a three-dimensional(3D)model of the vibrator,and modal analysis is performed through finite element analysis software to obtain the natural frequencies of the vibrator dynamic and the vibration shape corresponding to the different frequency.And through harmonic response analysis,the structure response of the vibrator under specific frequency are obtained.The overload characteristics of the vibrator are simulated and analyzed,and the maximum stress value and maximum displacement value of the vibrator under different overload are obtained.Finally,a new type of metal vibrator is obtained.Its diameter is 10 mm,natural frequency is 10566 Hz,modal isolation is greater than 1000 Hz,and can withstand more than 16×104 gn overload impact.

关 键 词：金属振子 振动陀螺 有限元仿真 幅频特性 抗高过载 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TP391.4[自动化与计算机技术—控制科学与工程] TP274.2