圆壳体振弦式陀螺驱动设计与振动特性分析  

Circular shell vibrating wire gyro drive design and vibration character analysis

作　　者：陈志龙[1] 刘鹏 黄鸣 舒凯 CHEN Zhilong;LIU Peng;HUANG Ming;SHU Kai(Provincial Key Laboratory of Nanchang Institute of Technology,Nanchang 330044,China;Guangzhou Depot of China Railway Guangzhou Bureau Group Co Ltd,Guangzhou 510080,China;School of Electromechanical and Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]南昌理工学院省级重点实验室,江西南昌330044 [2]中国铁路广州局集团有限公司广州车辆段,广东广州510080 [3]华东交通大学机电与车辆工程学院,江西南昌330013

出　　处：《传感器与微系统》2022年第2期29-33,38,共6页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61663033)。

摘　　要：针对微陀螺高精度和微型化的发展趋势,依据振弦式陀螺的工作原理建立了圆壳体振弦式陀螺驱动模型;应用Ansys软件分析了驱动中U形折叠梁结构参数以及内环驱动结构参数对驱动的影响,优化了驱动结构并建立了振动响应仿真分析。结果表明:圆壳体振弦式陀螺受驱动方向和驱动垂直方向的重力影响较大但变形小于1μm,优化后的U形折叠梁沿z方向有足够的刚性,可降低振弦式陀螺受z方向重力加速度的影响,且从谐响应分析中得出驱动峰值频率为3 500 Hz,最大应力为132 kPa,幅值为9.27μm。从而验证了所提出的驱动模型的可行性,为实际产品试制研究奠定理论基础。Aiming at the development trend of high precision and miniaturization of micro gyroscopes, the driving model of the circular shell vibrating wire gyro is established according to the working principle of the vibrating wire gyro;the U-shaped folding beam in the driving is analyzed using Ansys.The structural parameters and the influence of the inner ring drive structural parameters on the drive have optimized the drive structure and established a simulation analysis of the vibration response.The results show that the circular shell vibrating wire gyroscope is greatly affected by the gravity of the driving direction and the vertical driving direction, but the deformation is less than 1 μm.The optimized U-shaped folded beam has sufficient rigidity in the z direction to reduce the vibration of the vibrating wire gyroscope.The influence of gravity acceleration and from the analysis of harmonic response, the driving peak frequency is 3 500 Hz, the maximum stress is 132 kPa, and the amplitude is 9.27 μm.Thus, the feasibility of the driving model is verified, which lays a theoretical foundation for the research on the trial production.

关 键 词：振弦式陀螺 U形折叠梁 重力响应分析 谐响应分析 

分 类 号：TH137[机械工程—机械制造及自动化] TP212[自动化与计算机技术—检测技术与自动化装置]