Optimal design of length factor for cross-coupled 2-DOF motor with Halbach magnet array
Optimal design of length factor for cross-coupled 2-DOF motor with Halbach magnet array
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DOI：
10.1109/icmech.2015.7084032
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发表时间：
2015-03
期刊：
影响因子：
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通讯作者：
Shodai Tanaka;T. Shimono;Y. Fujimoto
中科院分区：
文献类型：
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作者：
Shodai Tanaka;T. Shimono;Y. Fujimoto
本文介绍了交叉耦合二自由度 (2-DOF) 电机的优化设计。一般来说，Halbach磁体阵列可以实现高磁负载。因此，采用Halbach磁体阵列将获得更高的推力和扭矩。所提出的电机具有轴、永磁体、螺旋绕组和两个线轴。该结构可独立实现直线运动和旋转运动。另外，动子部由轴和扇形且沿径向或轴向磁化的永磁体构成。两种磁体（轴向和径向磁化）沿轴向交替放置在轴上。通过确定长度系数（两种磁体的长度之比），即可找到最大推力和最大扭矩。在本文中，通过改变这些磁体的长度系数并执行有限元分析（FEA）来验证最佳设计。
This paper introduces an optimal design for a cross-coupled two-degree-of-freedom (2-DOF) motor. Generally, Halbach magnet array can realize high magnetic loading. Therefore, higher thrust force and torque will be obtained by employing Halbach magnet array. The proposed motor has a shaft, the permanent magnets, helical windings, and two bobbins. This structure can independently realize linear and rotary motions. Also, the mover part is constituted of the shaft and the permanent magnets which are segment shape and magnetized to the radial or the axial direction. Two kinds of magnets (magnetizations of axial and radial directions) are alternately placed at the shaft to axial direction. By determining the length factor which is the ratio between lengths of two kinds of magnets, the maximum thrust force and maximum torque will be found. In this paper, the optimal design is verified by varying the length factor of these magnets and performing the finite element analysis (FEA).