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

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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.

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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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  1. Huixia Zhang and Xifu Chen contributed equally

Authors and Affiliations

  1. School of Mechanical Engineering, Yancheng Institute of Technology, Yancheng, 224051, China

    Xifu Chen, Ming Li & Qian Lu

  2. School of Mechanical and Ocean Engineering, Huaihai Institute of Technology, Lianyungang, 222005, China

    Huixia Zhang

  3. School of Mechanical and Aerospace Engineering, ReCAPT, 501, Gyeongsang National University, Jinju-daero, Jinju-si, Gyeongnam-do, 52828, Korea

    Sungki Lyu

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  1. Xifu Chen
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  2. Ming Li
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  3. Huixia Zhang
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  4. Qian Lu
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  5. Sungki Lyu
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Correspondence to Qian Lu or Sungki Lyu.

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Chen, X., Li, M., Zhang, H. et al. Improvement on the Structure Design of a Kind of Linear Piezoelectric Motor with Flexible Drive-Foot. Int. J. Precis. Eng. Manuf. 21, 81–89 (2020). https://doi.org/10.1007/s12541-019-00209-7

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  • DOI: https://doi.org/10.1007/s12541-019-00209-7

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