Design and Fabrication of the Large Thrust Force Piezoelectric Actuator

Shyang-Jye Chang,Jing Chen

doi:10.1155/2013/912587

Abstract

This paper presents a novel piezoelectric actuator containing double pushers. By using finite element analysis software, this study simulated the vibration mode and amplitude of piezoelectric actuators. The Taguchi method was used to design the parameters of piezoelectric actuators including length, width, height, and electrodes setting. This paper also presents a discussion regarding the influence that the design parameters had on the actuator amplitudes. Based on optimal design parameters, a novel piezoelectric actuator containing double pushers is produced and some thrust tests are also carried out. From the experiment results, the piezoelectric actuator containing double pushers can provide a greater thrust force than that of traditional actuators containing a single pusher as the preload is greater. Comparing with the traditional actuators, the thrust force of new actuator can be increased by 48% with the double preload.

Highlights

In 1982, the first piezoelectric actuator was produced by Shinsei
This study presents a novel piezoelectric actuator
Taguchi method is used to find the optimal combination of parameters including length, width, height, and electrodes setting

Summary

Introduction

In 1982, the first piezoelectric actuator was produced by Shinsei. In 1987, piezoelectric actuators were installed in dot matrix printers and mass-produced; this was the first time piezoelectric actuators were used in commercial applications. The vibration mode of traveling-wave actuators is a ripple, which travels in an oval trajectory. The motion trajectories of standing-wave actuators are oval, linear, or of other shapes. Because of a lack of phase differences, single-phase piezoelectric actuators possess a simple driver circuit design and high output efficiency. Double- and multiphase piezoelectric actuators travel in oval trajectories because they are driven by multiple modes. When two vibration modes are simultaneously excited, differences in frequency tend to prevent effective resonance, thereby lowering efficiency. This setback in doubleand multiphase piezoelectric actuators must be rectified. Based on single-phase standing-wave piezoelectric actuators, this study designed a novel piezoelectric actuator containing double pushers

Materials and Methods

Results and Discussion

A2 B1 B2 B3 C1 C2 C3 D1 D2 D3

Conclusions

Conflict of Interests