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.
galfenol, magnetostrictive material, precision positioning, inertia impact
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.
1. K. Spanner, B. Koc, Piezoelectric Motors, an Overview, 2016, Actuators, vol.5, no.1, pp.1-18.
2. T. Morita, T. Nishimura, R. Yoshida, H. Hosaka, Design for the resonant type SIDM (Smooth Impact Drive Mechanism) actuator. 2012, Proc. Symp. on Ultrason. Electron. vol.33, pp.77-78.
3. K. Furutani, T. Higuchi, Y. Yamagata, N. Mohri, Effect of lubrication on impact drive mechanism, 1998, Precis. Eng., vol.22, no.2, pp.78–86.
4. N. Henmi, Y. Sumi, M. Tanaka, Fast drive of displacement magnification mechanism with flexure hinge using loading type impact damper, 2010, J. Mech. Sci. and Tech., 2010, vol.24, no.1, pp.211-214.
5. C.F Yang, S.L Jeng, W.H Chieng, Motion behavior of triangular waveform excitation input in an operating impact drive mechanism, 2011, Sens. Actuators A, vol.166, pp.66-77.
6. W. Kim, A. Sadighi, A Novel Low-Power Linear Magnetostrictive Actuator With Local Three-Phase Excitation,2010, IEEE Trans. Mechatraonics,vol.15, no.2, pp.299-307.
7. A. Sadighi, W. Kim, Sensorless Control of a Novel Linear Magnetostrictive Motor, 2010, IEEE Trans. Ind. Appl., vol.47, no.2, pp.736-743.
8. J. Kim, J. Doo, Magnetostrictive self-moving cell linear motor, 2003, Mechatronics, vol.13, no.7, pp.739-753.
9. Q. Lu, R. Zhao, Z. Zhu, Magnetostrictive Lineal Actuator Based on Impact Drive Mechanism. 2015, Chiness J. Small Spec. Elec. Mach., vol.43, pp.9-11.
10. G. Engdahl, Handbook of Giant Magnetostrictive Materials, 1999, Academic Press, New York.
11. J. Atulasimha, A.B Flatau, A review of magnetostrictive iron–gallium alloys, 2011, Smart Materials and Structures, vol.20, pp.1-15.
12. Z.Z Guang, T. Ueno, T. Higuchi, Magnetostrictive Actuating Device Utilizing Impact Forces Coupled with Friction Forces, 2010, IEEE Int. Symp. Ind. Electron., pp.464-469.
13. M. Hunstig, T. Hemsel, W. Sextro, Mechatronics Stick–slip and slip–slip operation of piezoelectric inertia drives. Part I: Ideal excitation, 2013, Sens. Actuators A, vol.200, pp.90-100.
14. D.C Jiles, Inotrduetion to Magnetism and Magnetie Materials, Chpamanand Hall, NewYork, 1991.
15. S. Karunanidhia, M. Singaperumal. Design, analysis and simulation of magnetostrictive actuator and its application to high dynamic servo valve, 2010, Sens. Actuators A, vol.157, pp.185-197.