Performance Improvement of Operating Three-Degree-of-Freedom Spherical Permanent-Magnet Motor
- Title
- Performance Improvement of Operating Three-Degree-of-Freedom Spherical Permanent-Magnet Motor
- Author
- 이주
- Keywords
- Double-air-gap; humanoid joint system; positioning torque; spherical motor; three-degree-of-freedom (3-DOF)
- Issue Date
- 2012-11
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
- Citation
- IEEE Transactions on Magnetics IEEE Trans. Magn. Magnetics, IEEE Transactions on, Vol.48, No.11 [2012], p4654-4657
- Abstract
- This paper describes performance of operating three-degree-of-freedom (3-D.O.F.) spherical permanent-magnet motor with a finite-element-analysis and experimental studies. Torque and efficiency comparison was made for two different models; the pure iron processed stator core model with a Guide-frame structure, and powder formed stator core model with a Guide-frame structure. As a post study to compensate the defect of the guide frame structure, a double-air-gap operating three-degree-of-freedom spherical permanent-magnet motor has been proposed. Double air-gap type has a single stator, double air-gap between the outer rotor and the inner rotor. Moreover, the double air-gap type, which does not have a guide frame, has a higher torque density, better efficiency, and greater applicability. Finally, the estimated performance has been proven via experiment conducted under the proposed efficiency measurement method.
- URI
- https://ieeexplore.ieee.org/document/6332807/http://hdl.handle.net/20.500.11754/43640
- ISSN
- 1941-0069
- DOI
- 10.1109/TMAG.2012.2200470
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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