Halbach Permanent Magnet Shape Selection for Slotless Tubular Actuators
Halbach Permanent Magnet Shape Selection for Slotless Tubular Actuators
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DOI：
10.1109/tmag.2008.2001536
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发表时间：
2008-11-01
影响因子：
2.1
通讯作者：
Lomonova, Elena A.
中科院分区：
文献类型：
--
作者：
Meessen, Keen J.;Gysen, Bart L. J.;Lomonova, Elena A.
本文介绍了改变永磁体（PMs）的磁铁形状的影响，在Halbach阵列应用于无槽管状驱动器。更具体地，方形磁体被梯形磁体代替。提出了规则正方形永磁体磁场的半解析解，并用于近似梯形永磁体产生的气隙磁场。该方法基于将磁体划分为若干径向层并叠加场来计算总磁场。结果进行了比较，有限元分析（FEA），并显示出良好的协议。利用该磁场解，通过参数搜索分析了磁体形状对磁场波形的影响。
This paper describes the effects of changing the magnet shape of permanent magnets (PMs) in a Halbach array applied in a slotless tubular actuator. More specifically, the square shaped magnets are replaced by trapezoidal shaped magnets. A semi-analytical magnetic field solution of regular square shaped magnets is presented and used to approximate the airgap field produced by the trapezoidal shaped PMs. The method is based on dividing the magnets into several radial layers and superposition of the fields to calculate the total magnetic field. The results are compared to finite element analysis (FEA) and show excellent agreement. Using this magnetic field solution, the effect of the shape of the magnets on the magnetic field waveform is analyzed by means of a parametric search.