Comparative investigation of permanent magnet linear oscillatory actuators used in orbital friction vibration machine

Issue title: Proceedings from the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)

Guest editors: Xavier Maldague and Toshiyuki Takagi

Article type: Research Article

Authors: Xu, Fei^a | Hu, Jianhui^{a; *} | Zou, Jibin^a | Li, Yong^a | Xu, Yongxiang^a | Fan, Hua^a

Affiliations: [a] Department of Electrical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China | Université Laval, Canada | Tohoku University, Japan

Correspondence: [*] Corresponding author: Jianhui Hu, Department of Electrical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China. Tel.: +86 0451 8641 3613; E-mail: hujianhui@hit.edu.cn

Abstract: The paper describes the alternative designs and performances of a single-phase moving-magnet linear oscillating actuator (LOA) which has been developed for orbital friction welding. The influences of the pole ratio on the performance of the LOAs are investigated and the optimal parameters have been identified with reference to the thrust force characteristics. It can be illustrated that a quasi-Halbach magnetized LOA, in which the magnets are assembled on a nonmagnetic mover yoke, represents the best electromagnetic performances. Finally, the predicted thrust force-current characteristic of quasi-Halbach magnetized LOA is validated by measurements on a prototype actuator.

Keywords: Orbital friction vibration welding, linear oscillatory actuator, thrust force, optimal design

DOI: 10.3233/JAE-141880

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 45, no. 1-4, pp. 581-588, 2014