A Performance Study on a Permanent Magnet Spherical Motor

To realize the multi-Degree-of-Freedom (multi-DOF) movement, researches on spherical motor have been conducted in many countries. The Spherical motor has a 3-DOF, whose shaft can not only rotate as rotary motor but also tilt in the 2-DOF space. Researches on spherical motor will greatly contribute t...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2013-05, Vol.49 (5), p.2307-2310
Main Authors: Park, Hyun-Jong, Lee, Ho-Joon, Cho, Su-Yeon, Ahn, Han-Woong, Lee, Ki-Doek, Park, Chan-Yeop, Won, Sung-Hong, Lee, Ju
Format: Article
Language:English
Subjects:
3-DOF (3-degree-of-freedom) motor
3-DOF system
Camber
Coils
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Induction motors
Magnetism
Materials science
Mathematical analysis
motor control
Motors
Other topics in materials science
Permanent magnet motors
Permanent magnets
Physics
Rotating
Rotors
spherical motor
Stators
Synchronous motors
Tilt
Torque
Weight reduction
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Summary:To realize the multi-Degree-of-Freedom (multi-DOF) movement, researches on spherical motor have been conducted in many countries. The Spherical motor has a 3-DOF, whose shaft can not only rotate as rotary motor but also tilt in the 2-DOF space. Researches on spherical motor will greatly contribute to 3-DOF systems, because spherical motor can reduce the size and weight of 3-DOF systems. This paper studies a new type of spherical motor that has rotating coils and tilting coils. Also, the current function depending on shaft angles is proposed. Finally, the torque is calculated corresponding to different shaft angles and rotating speeds. Moreover, these performances are validated via experiments.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2013.2238616