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Improvement on the Structure Design of a Kind of Linear Piezoelectric Motor with Flexible Drive-Foot

  • Xifu Chen
  • Ming Li
  • Huixia Zhang
  • Qian LuEmail author
  • Sungki LyuEmail author
Regular Paper
  • 9 Downloads

Abstract

Linear piezoelectric motors have wide application prospects in precision instrument, biomedical engineering and many other high technology fields. In this paper, a linear piezoelectric motor operating in non-resonant state was proposed by using a flexible mechanism with characteristics of precision displacement output. Since the stator structural characteristic affects the stability and output performance of the motor directly, this paper focused on the improvement on the structure design of a motor stator with flexible five-bar drive-foot. Firstly, by analyzing the displacement output characteristics of flexible five-bar mechanism, the elliptical trajectory of drive-tip was investigated. Then the drive-foot was particularly designed with the characteristics of flexible structure, and its main structure parameters ware improved by the finite element method. Further, the integrated structure of stator was designed and fabricated. Finally, the comparison tests of the two motors were carried out. The experimental results show that the output force and efficiency of the improved piezoelectric motor are increased by 52.38% and 159.15%, respectively.

Keywords

Linear motors Piezoelectric Flexible drive-foot Parameter optimization 

Notes

Acknowledgements

This work was a project funded by the National Natural Science Foundation of China (Number: 51405420, 51375224, 51805465); Youth project of Jiangsu Natural Science Foundation of China (Number: BK20140474); Natural Science Research Projects in Jiangsu Higher Education Institutions (18KJB460030); Qing Lan Project of Jiangsu Higher Education of China (Su-Teacher 2018-12); The sponsorship of Jiangsu Oversea Research and Training Program for University Prominent Young & Middle-aged Teachers.

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Copyright information

© Korean Society for Precision Engineering 2019

Authors and Affiliations

  1. 1.School of Mechanical EngineeringYancheng Institute of TechnologyYanchengChina
  2. 2.School of Mechanical and Ocean EngineeringHuaihai Institute of TechnologyLianyungangChina
  3. 3.School of Mechanical and Aerospace Engineering, ReCAPT, 501Gyeongsang National UniversityJinju-daero, Jinju-siKorea

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