RESEARCH ON THE MOVEMENT CHARACTERISTICS OF MICRO-DISPLACEMENT MECHANISM WITH VARIABLE FRICTION BASED ON THE PRINCIPLE OF THE INERTIAL IMPACT

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RESEARCH ON THE MOVEMENT CHARACTERISTICS OF MICRO-DISPLACEMENT MECHANISM WITH VARIABLE FRICTION BASED ON THE PRINCIPLE OF THE INERTIAL IMPACT

Article | 更新时间：2020-08-12

- RESEARCH ON THE MOVEMENT CHARACTERISTICS OF MICRO-DISPLACEMENT MECHANISM WITH VARIABLE FRICTION BASED ON THE PRINCIPLE OF THE INERTIAL IMPACT
- Optics and Precision Engineering Vol. 16, Issue 4, Pages: 676-681(2008)
- 作者机构：
  
  吉林大学机械学院
- 作者简介：
- 基金信息：
- DOI：
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- Received：24 September 2007，
  
  Revised：07 November 2007，
  
  Published Online：22 April 2008，
  
  Published：22 April 2008
- 稿件说明：
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李晓韬. 基于惯性冲击原理的变摩擦式微位移机构运动特性的研究[J]. 光学精密工程, 2008,16(4):676-681

RESEARCH ON THE MOVEMENT CHARACTERISTICS OF MICRO-DISPLACEMENT MECHANISM WITH VARIABLE FRICTION BASED ON THE PRINCIPLE OF THE INERTIAL IMPACT[J]. Optics and precision engineering, 2008, 16(4): 676-681.
李晓韬. 基于惯性冲击原理的变摩擦式微位移机构运动特性的研究[J]. 光学精密工程, 2008,16(4):676-681 DOI：

RESEARCH ON THE MOVEMENT CHARACTERISTICS OF MICRO-DISPLACEMENT MECHANISM WITH VARIABLE FRICTION BASED ON THE PRINCIPLE OF THE INERTIAL IMPACT[J]. Optics and precision engineering, 2008, 16(4): 676-681. DOI：

摘要

针对目前无法使用对称的正弦波产生逆压电效应驱动微位移机构的现状，提出了利用正弦波信号驱动压电双晶片振子的技术方案，应用惯性冲击力实现机构的微小位移，建立了机构运动的数学模型。设计了斜面结构使正弦波作用产生的周期性惯性冲击力形成竖直作用于微位移驱动机构的分量，通过改变正压力调整摩擦阻力的大小，并推导了QU<QD<FX的微位移机构运动条件。对微位移机构的速度－频率、速度－电压和位移特性进行了试验，结果表明：变摩擦式微位移机构样机能实现较稳定的正向运动，电压一定且频率为30Hz～38Hz时，运动速度随频率的增加而稳定增加；频率一定时，运动速度随电压增加而稳定增加；在35Hz、90V的正弦波激励下，样机平均步长达到2μm，速度达到1mm/s。

Abstract

Focused on the disability of the micro-displacement mechanism driven by sine wave-a kind of symmetrical wave based on the principle of the converse piezoelectric effect

using sine wave to drive the piezoelectric cantilever bimorphs is proposed. Micro-displacement is realized driven by the inertial impact force. The mathematical model of the mechanism movement is constructed. The mechanism with bevel is designed. Vertical force to the mechanism is produced by the periodical inertial force

which changes the friction by changing vertical pressure. The moving condition QU<QD<FX is deduced. The velocity characteristics under different frequencies and voltages are tested. The results show that micro-displacement mechanism realizes stable and forward direction movement. When the voltage is fixed and the frequency is between 30Hz～38Hz

its velocity increases as the frequency increases. When the frequency is fixed

its velocity increases as the voltage increases. The average step is up to 2μm and the velocity is up to 1mm/s when the mechanism is actuated by the 35Hz、90V sine wave.

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