第22卷第5期 2014年5月
文章编号
1004924X(2014)05-1296-08
光学精密工程
Optics and Precision Engineering
Vol.22No.5
May.2014
悬臂式压电双晶片振子夹持长度变化
对其动态特性的影响
程光明1.2，李新辉1，张海滨1.2，曾平1，温建明1（1.浙江师范大学精密机械研究所，浙江金华321004 2.兰州交通大学机电工程学院，甘肃兰州730070）
悬臂式压电双晶片振子为研究对象，探讨了悬臂式压电双晶片振子的夹持长度
摘要：以惯性压电驱动器的关键部件-
变化对其动态特性的影响规律。首先，建立了悬臂式压电双晶片振子静态参数方程和动力学模型。然后，应用matlab 软件仿真分析了夹持长度变化对悬臂式压电双晶片振子的端部位移幅值和惯性加速度幅值的影响。最后，分别测试了悬臂式压电双晶片振子在不同夹持长度下的端部位移幅值以及惯性加速度幅值。结果显示：驱动电压为10V，频率为 11Hz.悬臂式压电双晶片振子的夹持长度在9~20mm内变化时.其端部位移幅值最大为66.2μm，产生的惯性加速度幅值最大为10.2ms"。仿真和试验结果表明：激励电场相同时，随着悬臂式压电双晶片振子的夹持长度增大，其端部
位移幅值会变小，而其产生的惯性加速度会变大。关键
词：压电双晶片振子，悬臂式双晶片振子；央持长度；动态特性
中图分类号：TN384
文献标识码：A
doi:10.3788/OPE.20142205.1296
Effectofdifferentclampinglengthsofcantilever
bimorph on its dynamic characteristics
CHENG Guang-mingl-, LI Xin-hui'·, ZHANG Hai-binl-2, ZENG Ping', WEN Jian-ming(l.Institute of Precision Machinery,ZhejiangNormal University,Jinhua 321004,China 2. School of Mechanical and Electronic Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
*Correspondingauthor，E-mailhuilai1212@126.com
Abstract: This work focuses on the effect of clamping length on the dynamic characteristics of a canti lever piezoelectric bimorph vibrator. First, the static parameter equation and the dynamic model of the cantilever bimorph vibrator was established. Then, the effects of the changed clamping lengths on the tip displacement amplitude and the inertia acceleration magnitude of the cantilever bimorph vibrator were analyzed with MATLAB software. Finally, the tip displacement amplitude and the inertia accel-eration amplitude of the cantilever bimorph vibrator were measured separately. Results show that the maximal amplitude of tip displacement is 66. 2 μm and the generated maximal inertial acceleration is 10. 2 ms-2 at a driving voltage of 10 V,a frequency of 11 Hz,and the clamping length of cantilever bi-morph vibrator between 9 and 2o mm, Simulation and experimental results indicate that with the same excitation field, the longer the clamping length, the smaller the amplitude of displacement and the lar-ger the inertial acceleration produced by the piezoelectric bimorph vibrator.
收稿日期：2013-12-01；修订日期：2014-02-05.
基金项目：国家自然科学基金资助项目（No.51175478，No.51205369）；浙江省自然科学基金资助项目（No.
Y1110529)