石英晶体板型表面波陀螺仪研究  

Study on quartz crystal plate surface acoustic wave gyroscope

作　　者：吴荣兴[1,2] 王晓明 郑东 WU Rongxing;WANG Xiaoming;ZHENG Dong(School of Architectural Engineering,Ningbo Polytechnic,Ningbo 315800,China;School of Mechanical Engineering and Mechanics,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波职业技术学院建筑工程学院,浙江宁波315800 [2]宁波大学机械与力学学院,浙江宁波315211

出　　处：《传感器与微系统》2021年第10期56-58,共3页Transducer and Microsystem Technologies

基　　金：浙江省教育厅高校科研项目(Y201636501)。

摘　　要：建立了考虑陀螺效应的声表面波在半无限大石英晶体和无限大石英晶体板内的传播方程。通过数值计算分别绘制了声表面波波速和旋转频率以及旋转轴角度之间的关系曲线图。计算结果表明,随着旋转频率的增加,获得的波速都在减小,同时绕声表面波传播方向旋转时的陀螺效应对波速影响十分明显。当声表面波在旋转场作用下的无限大石英晶体板内传播时,获得的两个波速随着板厚的增加逐渐趋向于无限大石英晶体的波速。在实际声表面波陀螺效应传感器设计中,可以利用波速、旋转频率和旋转轴角度进行陀螺效应分析。The propagation equations of surface acoustic wave in the semi-infinite quartz crystal and infinite quartz crystal plate is established with consideration of gyroscopic effects.By numerical computation,the wave velocity-rotating frequency curves and wave velocity-rotating axis angle curves have been plotted.Numeric results show that with the increase of rotational frequency,the wave velocities we obtained decreased,and the gyroscopic effects caused by the rotating around the propagation direction of surface acoustic wave has obvious effect on the wave velocities.During surface acoustic wave propagating in the infinite quartz crystal plate with consideration of the effect of rotating fields,the two surface acoustic wave velocities obtained tend to that of semi-infinite quartz crystal with increase of plate thickness.In the actual surface acoustic wave gyroscopic effect sensor design,gyroscopic effect can be analyzed based on wave velocities,rotating frequency and rotating axis angle.

关 键 词：陀螺 声表面波 石英晶体板 波速 

分 类 号：TH123.1[机械工程—机械设计及理论]