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Sensors 2018, 18(1), 124; doi:10.3390/s18010124

Analysis and Optimization of a Novel 2-D Magnet Array with Gaps and Staggers for a Moving-Magnet Planar Motor

State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
Author to whom correspondence should be addressed.
Received: 7 December 2017 / Revised: 27 December 2017 / Accepted: 2 January 2018 / Published: 4 January 2018
(This article belongs to the Section Physical Sensors)
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This paper presents a novel 2-D magnet array with gaps and staggers, which is especially suitable for magnetically levitated planar motor with moving magnets. The magnetic flux density distribution is derived by Fourier analysis and superposition. The influences of gaps and staggers on high-order harmonics and flux density were analyzed, and the optimized design is presented. Compared with the other improved structures based on traditional Halbach magnet arrays, the proposed design has the lowest high-order harmonics percentage, and the characteristics of flux density meet the demand of high acceleration in horizontal directions. It is also lightweight and easy to manufacture. The proposed magnet array was built, and the calculation results have been verified with experiment. View Full-Text
Keywords: 2-D magnet array; high-order harmonics; planar motor; optimization 2-D magnet array; high-order harmonics; planar motor; optimization

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, Y.; Chen, X.; Luo, X.; Zeng, L. Analysis and Optimization of a Novel 2-D Magnet Array with Gaps and Staggers for a Moving-Magnet Planar Motor. Sensors 2018, 18, 124.

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