摘要
半球谐振陀螺仪(HRG)是极具发展前景的新型固态波陀螺仪,其发展的关键是如何设计制造出精致可靠的陀螺结构部件。该文以工程应用中成熟半球陀螺半径尺寸为例,对谐振子部件几何尺寸中壁厚和轴柄半径的设计从抗模态干扰方面提出优化建议,并首次将抗冲击过载能力纳入优化设计考量因素中,通过COMSOL软件仿真得出壁厚和轴柄半径取值范围。创新性地提出对谐振子与其他石英部件的双端固定与单端固定方式进行模态仿真。经仿真分析结果表明,双端固定时,轴柄高度对工作模态无干扰;单端固定时,倾斜模态和摇摆模态较接近工作模态频率,且上轴柄越高,对工作模态越易产生干扰。
The hemispherical resonator gyroscope(HRG)is a new type of solid-state wave gyroscope with great development prospects.The key to its development is how to design and manufacture delicate and reliable gyro structural components.In this paper,taking the radius size of hemispherical gyroscope in mature engineering application as an example,the optimization suggestions for the design of wall thickness and shaft radius in the geometry size of resonator components are put forward from the aspect of modal anti-interference,and the overload resistance is taken into consideration in the optimized design for the first time,and the value range of wall thickness and shaft radius are obtained through COMSOL software simulation.The modal simulations of the two-end and single-end fixed modes of resonator and other quartz components are presented innovatively.The simulation results show that the height of shaft does not interference with the working mode when the two-ends are fixed,while when a single end is fixed,the tilt mode and the swing mode are close to the working mode frequency,and the higher the upper shaft is,the more interference will occur to the working mode.
作者
谭品恒
方针
方仲祺
彭凯
TAN Pinheng;FANG Zhen;FANG Zhongqi;PENG Kai(The 26th Institute of China Electronics Technology Group Corporation, Chongqing 400060, China)
出处
《压电与声光》
CAS
北大核心
2021年第2期265-269,共5页
Piezoelectrics & Acoustooptics
