东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (8): 1078-1082.DOI: 10.12068/j.issn.1005-3026.2014.08.004

• 信息与控制 • 上一篇    下一篇

永磁驱动器偏心磁极的优化设计

石松宁，王大志，时统宇   

  1. (东北大学 信息科学与工程学院， 辽宁 沈阳110819)
  • 收稿日期:2013-10-20 修回日期:2013-10-20 出版日期:2014-08-15 发布日期:2014-04-11
  • 通讯作者: 石松宁
  • 作者简介:石松宁(1982-)，女，辽宁锦州人，东北大学博士研究生;王大志(1963-)，男，辽宁锦州人，东北大学教授，博士生导师.
  • 基金资助:
    辽宁省技术创新重大项目(201309001).

Optimal Design of Eccentric Magnetic Pole for Permannent Magnet Drive〓

SHI Songning， WANG Dazhi， SHI Tongyu   

  1. School of Information Science & Engineering， Northeastern University， Shenyang 110819， China.
  • Received:2013-10-20 Revised:2013-10-20 Online:2014-08-15 Published:2014-04-11
  • Contact: SHI Songning
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摘要： 设计了一种具有偏心磁极结构的永磁驱动器，采用三维有限元仿真建立样本空间，构建具有偏心磁极结构的永磁驱动器的最小二乘支持向量机非线性回归模型；基于该模型，选择涡流损耗最小且输出转矩最大为优化目标，利用粒子群优化算法对其结构进行优化，得出最优结构参数组合.有限元仿真实验对比改进前后永磁驱动器的径向磁通密度和涡流密度分布的结果，验证了最小二乘支持向量机和粒子群算法的参数优化方法是可行的，改进的偏心磁极结构优化了永磁驱动器的涡流路径，提高了永磁驱动器的传动转矩，进一步提高了系统的工作效率.

关键词: 永磁驱动器, 有限元方法, 最小二乘支持向量机, 粒子群算法, 优化设计

Abstract: A permanent magnet drive (PMD) with eccentric magnetic pole was designed. The sample space was built by 3D finite element simulation， and a nonlinear regression model of the PMD was developed using the least squares support vector machine (LSSVM). Based on the model， the minimal eddy current loss and maximal output torque were selected as optimal objectives. The optimal parameters of the PMD were then derived through particle swarm optimization (PSO) searching. The results show that the parameter optimization method based on LSSVM and PSO algorithms is feasible by comparing the radial magnetic flux and eddy current densities of the improved PMD with that of the intrinsic one. The improved structure of the eccentric magnetic pole optimizes eddy current path and reduces stray current， thus increases the work efficiency.

Key words: permanent magnet drive, finite element method, least squares support vector machine, particle swarm algorithm, optimal design

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