Analysis and Optimization of a New 2-D Magnet Array for Planar Motor

被引：49

作者：

Min, Wei ^{[1
]}

Zhang, Ming ^{[1
]}

Zhu, Yu ^{[1
]}

Chen, Badong ^{[1
]}

Duan, Guanghong ^{[1
]}

Hu, Jinchun ^{[1
]}

Yin, Wensheng ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Precis Instruments & Mechanol, Inst Mfg Engn, Beijing 100084, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 05期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Force ripples; genetic algorithm; magnet array; planar motor; ACTUATORS; DESIGN; FIELD;

D O I：

10.1109/TMAG.2010.2040922

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a new 2-D permanent-magnet array for a planar motor, in which the angle between the magnetization directions of any two adjacent magnets is 45 degrees. The harmonic model for flux density distribution of the array is solved by the scalar magnetic potential equation and validated by the finite-element method. An analytical model for real-time control is derived by taking the first harmonic of the magnetic flux density distribution. The ignored higher harmonics in z-component of the magnetic flux density distribution is minimized by the genetic algorithm such that the analytical model becomes more accurate. Compared with the well-known Halbach magnet array, the proposed magnet array has lower higher harmonic components and higher z-component of the magnetic flux density, which will reduce the force ripples of the planar motor.

引用

页码：1167 / 1171

页数：5

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