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在旋转的半无限LiNbO3上传播的声表面波
引用本文:李良儿,陈智军,沈晓群,施文康.在旋转的半无限LiNbO3上传播的声表面波[J].中国惯性技术学报,2005,13(2):80-84.
作者姓名:李良儿  陈智军  沈晓群  施文康
作者单位:1. 浙江海洋学院电气工程系,舟山,316004
2. 上海交通大学电子信息与电气工程学院,上海,200030
基金项目:航天部科技创新基金资助
摘    要:声表面波(SAW)陀螺具有无源、无线、单层平面结构等优点。以目前国外研究小组所用的铌酸锂为对象,对含陀螺效应的声表面波的波动方程进行求解。用编制的程序进行了数值计算并绘制了基体绕各不同坐标轴旋转时,陀螺效应对铌酸锂表面传播的声表面波速度及对机电耦合系数影响的相关曲线,并对结果进行了分析。

关 键 词:LiNbO3  传播  半无限  声表面波(SAW)  机电耦合系数  陀螺效应  坐标轴旋转  平面结构  波动方程  数值计算  相关曲线  铌酸锂  波速度  求解
文章编号:1005-6734(2005)02-0080-05
修稿时间:2005年1月8日

Surface Acoustic Waves Propagating over Rotating LiNbO3 Half-space
LI Liang-er,CHEN Zhi-jun,SHEN Xiao-qun,SHI Wen-kang.Surface Acoustic Waves Propagating over Rotating LiNbO3 Half-space[J].Journal of Chinese Inertial Technology,2005,13(2):80-84.
Authors:LI Liang-er  CHEN Zhi-jun  SHEN Xiao-qun  SHI Wen-kang
Institution:LI Liang-er1,CHEN Zhi-jun2,SHEN Xiao-qun1,SHI Wen-kang2
Abstract:SAW(surface acoustic waves) gyroscope is passive, wireless and has single layer level structure. This article gives the solutions to the fluctuation equations of SAW involving gyroscopic effect, taking LiNbO_3 as the model material. Programs are written to do the numerical calculations, and the relevant curves are plotted, in which the gyroscopic effect influences the speed of SAW propagating over LiNbO_3 surface and the electromechanical coupling coefficient when the base is rotating around different coordinate axes. The results are analyzed and they are helpful to the design of SAW gyroscope, the choice of material and the optimization of cutting type.
Keywords:gyro  LiNbO_3  surface acoustic waves  gyroscopic effect
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