摘要
半球谐振陀螺作为一种高精度的陀螺仪,具有良好的学术研究价值及重要的应用价值,是国内外研究的热点。半球谐振子是半球谐振陀螺的核心部件,是一种工作中做四波腹振动的半球壳结构。由于在实际加工过程中存在误差,因此实际的谐振子无法达到理想的轴对称结构,这将导致谐振子在做四波腹振动时产生其他振动,从而对陀螺的精度产生影响。其主要原因是谐振子做四波腹振动时,非轴对称结构将产生非对称的惯性力。为此,该文对谐振子的不平衡力进行了理论推导,给出了半球谐振陀螺不平衡力的理论公式,并通过数值计算给出不平衡力与驻波方位间定量的关系,为分析不平衡质量对陀螺精度的影响提供参考。
As a kind of high precision gyroscope,hemispherical resonator gyro has good academic research value and important application value,and is a research hotspot at home and abroad.The hemispherical resonator is the core component of the hemispherical resonant gyro.It is a kind of hemispherical shell structure which does four wave belly vibration in operation.Due to the inevitable errors in the actual machining process,the actual harmonic oscillator cannot reach the ideal axisymmetric structure,which will leads to additional vibration,thus affecting the precision of the gyroscope.The main reason lies in the asymmetric inertia force generated by the non-axisymmetric structure when the resonator makes four wave abdominal vibration.In this paper,the unbalance force of resonator is derived theoretically and the theoretical formula of unbalance force of hemispherical resonant gyro is given.At the same time,the quantitative relationship between unbalance force and standing wave position is given by numerical calculation,which provides reference for analyzing the influence of unbalance mass on the precision of gyro.
作者
刘奎
于鑫海
段杰
苏定宁
赵思晗
李绍良
赵万良
LIU Kui;YU Xinhai;DUAN Jie;SU Dingning;ZHAO Sihan;LI Shaoliang;ZHAO Wanliang(Shanghai Aerospace Control Technology Institute,Shanghai 201109,China;Shanghai Engineering Research Center of Inertia,Shanghai 201109,China)
出处
《压电与声光》
CAS
北大核心
2023年第4期504-507,共4页
Piezoelectrics & Acoustooptics
关键词
半球谐振陀螺
谐振子
不平衡质量
不平衡力
hemispherical resonant gyroscope
hemispherical resonators
unbalance mass
unbalance force