Theoretical and Experimental Analysis on Bi-Directional Rotary Asymmetric Piezoelectric Actuator

doi:10.7652/xjtuxb201312016

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Theoretical and Experimental Analysis on Bi-Directional Rotary Asymmetric Piezoelectric Actuator

更新时间：2025-07-09

- Theoretical and Experimental Analysis on Bi-Directional Rotary Asymmetric Piezoelectric Actuator
- Vol. 47, Issue 12, Pages: 90-94(2013)
- 作者机构：
  
  吉林大学机械科学与工程学院,长春,130022
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201312016
  CLC： TM384;TH703.8
- Online First：10 December 2013，
  
  Published：2013
- 稿件说明：
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Theoretical and Experimental Analysis on Bi-Directional Rotary Asymmetric Piezoelectric Actuator[J]. 2013, 47(12): 90-94.
DOI：

Theoretical and Experimental Analysis on Bi-Directional Rotary Asymmetric Piezoelectric Actuator[J]. 2013, 47(12): 90-94. DOI： 10.7652/xjtuxb201312016.

摘要

以非对称压电惯性驱动器为研究对象

提出一种可形成双向驱动能力的新型非对称惯性压电驱动器。该驱动器通过压电振子的非对称夹持结构

使其向两侧振动时具有不同的系统刚度

当以对称信号驱动时

驱动器在一个振动周期内向两侧的转角不同

连续的往复振动使驱动器可以实现定向转动。根据其运动特征

运用能量守恒定律对压电振子的运动过程进行理论分析

推导出双向旋转驱动器步距角与频率之间的关系式

提出通过采用对称波形、不同频率的电源激励信号

使驱动器实现双向运动的方案。设计制作了旋转驱动器试验样机

搭建了驱动器的测试系统

在不同电压幅值、频率的正弦波激励下对驱动器步距角、转速等进行了测试。试验结果表明

可以通过频率控制实现非对称惯性压电驱动器的双向驱动

在100 V正弦电压信号激励下

当频率分别为65 Hz和83 Hz时

驱动器在两个方向上的最大转速分别为5.23 rad/s和0.56 rad/s。

Abstract

A novel bi-directional rotary asymmetric piezoelectric driving mechanism with asymmetric piezoelectric actuator is proposed. The actuator system stiffness varies as it is vibrating from one side to another due to the asymmetric clamping structure

and then the actuator is allowed to directionally rotate as long as asymmetric continuous driving signal is provided. Energy conservation law is considered to theoretically analyze the movement of piezoelectric vibrator

accordingly the relationship between step-angle and frequency of the bi-directional rotating actuator is deduced

and a novel bi-directional movement actuator excited by symmetric signals with different frequencies is presented. An experimental rotating actuator prototype is designed and the corresponding test system is set up. The step-angle and the speed of the actuator is tested under sine wave excitation with different voltages and frequencies. It demonstrates that the bi-directional drive of the asymmetric inertial piezoelectric actuator can be realized via frequency control. The maximum velocities of bi-directional rotation reach 5.23 rad/s in the case of 100 V and 65 Hz and 0.56 rad/s in the case of 100 V and 83 Hz

respectively.

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Keywords

references

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