摘要
在考虑压电效应的情况下，本文对压电陶瓷圆形振子的耦合振动进行了研究。根据压电陶瓷圆形振子的运动方程及压电方程，通过引入振子不同振动模式之间的机械耦合系数，分析了振子轴向及径向振动之间的耦合关系，得出了振子耦合振动的电导纳表达式，并导出了共振频率方程。与一维理论的结果相比，由本文理论得出的振子共振频率与实际测量值更加符合。
The coupled vibration of piezoelectric ceramic disks was studied when the piezoelectric effect is considered. Based on the piezoelectric and motion equations, introducing themechanical coupling coefficient the electric admittance and the frequency equation werederived, the relation between the axial and radial vibrations was analyzed. The resonantfrequencies of the vibrators were computed' Compared with the measured frequencies thecomputed results of this paper are better those computed by one dimensional theory.
出处
《声学技术》
CSCD
1994年第1期15-20,共6页
Technical Acoustics
关键词
压电效应
耦合振动
压电陶瓷
Piezoelectric effect, coupled vibration, resonant frequency, electric admittance, electro-mechanical coupling coefficient, mechanical coupling coefficient.
