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http://dx.doi.org/10.5370/JEET.2012.7.3.342

A New Moving-magnet Type Linear Actuator utilizing Flux Concentration Permanent Magnet Arrangement  

Goto, Akira (Ishii Tool & Engineering Corporation)
Okamoto, Takuya (Ishii Tool & Engineering Corporation)
Ikariga, Atsushi (Department of Electrical and Electronic Engineering, Faculty of Engineering, Oita University)
Todaka, Takashi (Department of Electrical and Electronic Engineering, Faculty of Engineering, Oita University)
Enokizono, Masato (Department of Electrical and Electronic Engineering, Faculty of Engineering, Oita University)
Publication Information
Journal of Electrical Engineering and Technology / v.7, no.3, 2012 , pp. 342-348 More about this Journal
Abstract
This paper presents a moving-magnet type linear actuator designed by using flux concentration type permanent magnet arrangement, which can generate higher magnetic flux density in air-gap. In this construction, detent force which is induced by both slot-effect and end-effect becomes larger due to strong attractive forces. To reduce cogging force we have employed a modular mover structure of two magnetic pole sections connected with a center yoke. The improved motor performance is demonstrated with the prototype machine.
Keywords
Linear motor; Moving magnet type; Cogging; Thrust; Center yoke; End yoke;
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  • Reference
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