Development of a Galfenol Magnetostrictive Linear Motor with Low Driving Voltage

Development of a Galfenol Magnetostrictive Linear Motor with Low Driving Voltage

Ran Zhao 

Jiangxi Province Key Laboratory of Precision Drive & Control, Nanchang Institute of Technology, China, Tianxiang Road No.289 High and New Technology Industrial Development Zone of Nanchang City

Corresponding Author Email: 
zhaoran@nit.edu.cn
Page: 
74-84
|
DOI: 
https://doi.org/10.18280/mmc_a.900106
Received: 
15 March 2017
| |
Accepted: 
15 April 2017
| | Citation

OPEN ACCESS

Abstract: 

A Galfenol driven miniature linear motor was developed in this paper. The proposed motor realized the micro stepping motion and based on the inertia impact and friction force. At first, the principle of impact driving mechanism was introduced, with the discussion of the structure of the given motor. Then, the analysis of the motor’s impedance property and shaft displacement was presented by simulations. At last, the performance of the proposed motor was tested by experiments. The experimental results demonstrate that the micro motor is capable of 8 nm resolution over the travel range of 30 mm. The maximum step-size is 2.1 μm. The maximum operation frequency is 500 Hz. A high accuracy displacement was achieved under 0-3 V low driving voltage. The results imply that the given motor is highly promising for use in nano-scale positioning system.

Keywords: 

galfenol, magnetostrictive material, precision positioning, inertia impact

1. Introduction
2. Operation Principle
3. Design
4. Simulation and Analysis
5. Experiments and Discuss
6. Conclusion
Acknowledgments

This work is supported by Opening fund of Jiangxi Province of Jiangxi Province Key Laboratory of Precision Drive & Control under granted No.KFKT201617, University Science and Technology Project under granted No.KJLD14094 and Jiangxi Province Science and Technology Support Program under granted No.20122BBE500033.

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