第23卷第5期 2015年5月
文章编号
1004-924X(2015)051365-07
光学精密工程
Optics and Precision Engineering
Vol.23No,5
May.2015
变正压力非对称夹持惯性压电旋转驱动器
马继杰，张海滨，程光明，曾平，温建明，李新辉
（浙江师范大学工学院，浙江金华321004）
摘要：设计了以非对称机械夹持压电双晶片振子为驱动元件，支撑面之间正压力可以改变的非对称夹持惯性压电旋转驱动器。分析了该驱动器的运动机理，建立了非对称夹持压电双晶片振子的伤真分析模型，研制了实验装置，并采用 ANSYS仿真分析和试验测试对比的方式，探讨了非对称夹持压电双晶片振子在对称方波激励电信号作用下的瞬态加速度响应情况。仿真分析和试验测试结果表明，在对称方波激励电信号作用下，非对称夹持压电双晶片振子具有较好的惯性冲击特性。试验研究了变正压力非对称夹持惯性压电旋转驱动器在不同旋转角度和激励电信号频率条件下的工作性能，结果表明：在夹持差为4mm，激励电信号电压为30V，激电信号频率为5Hz，压电振子与接触平面之间夹角为50°
时，研制的压电施转驱动器能够明显减少惯性压电旋转驱动器回退的现象，可实现稳定单向旋转。关键词：压电驱动器；旋转驱动器；非对称央持；变正压力；瞬态响应
中图分类号：TN384
文献标识码：A
doi:10.3788/OPE,20152305,1365
Piezoelectric inertial rotary actuator with
variablenormalpressureandasymmetricgripper
MA Ji-jie, ZHANG Hai-bin, CHENG Guang-ming', ZENG Ping, WEN Jian-ming, LI Xin-hui
(Collegeof Engineering,ZhejiangNormalUniversity,Jinhua321004,China)
*Correspondingauthor，E-mail:cgm123@163.com
Abstract: A piezoelectric inertial rotary actuator with variable normal pressures and asymmetric grippers was designed, which driven by a asymmetric clamping piezoelectric bimorph vibrator. The motion mechanism of the piezoelectric inertial rotary actuator was analyzed, then a simulation model of the asymmetric clamping piezoelectric bimorph vibrator was established and an experimental platform was built. By both the ANSYS simulation analysis and comparison experiment, the transient response of symmetric square wave of this asymmetric clamping piezoelectric bimorph vibrator was demonstrated.The results show the asymmetric clamping piezoelectric bimorph vibrator has good inertial impact performance under a symmetric square wave. The further variable normal pressure tests on different angles and stimulation frequencies for the piezoelectric inertial rotary actuator illustrate that the return length in each step is apparently reduced when the clamping difference is 4 mm, the stimulating voltage is 3o V, the stimulation frequency is 5 Hz and the angle between the piezoelectric vibrator and the surface is 5o°, by which the piezoelectric inertial rotary actuator implements a stable unidirectional rotation.
Key words: piezoelectric actuator; rotary actuator; asymmetry gripper; variable normal pressure;
transient response
收稿日期：2014-10-28；修订日期：2014-12-09.
基金项目：国家自然科学基金资助项目（No.51205369，No,51175478）；浙江省教育厅资助项目（No.Y201225987）