宇航学报

宇航学报 ›› 2017, Vol. 38 ›› Issue (5): 481-489.doi: 10.3873/j.issn.1000-1328.2017.05.006

• 飞行器设计与力学 • 上一篇    下一篇

新型微框架磁悬浮飞轮用洛伦兹力磁轴承

刘强，赵勇，曹建树，任元   

  1. 1. 北京石油化工学院精密电磁装备与先进测量技术研究所，北京102617；
    2. 北京石油化工学院磁悬浮轴承研发与精密制造中心，北京102617；
    3. 装备学院航天装备系，北京101416
  • 收稿日期:2016-12-06 修回日期:2017-03-06 出版日期:2017-05-15 发布日期:2017-05-25
  • 基金资助:

    国家自然科学基金（51405022）

Lorentz Magnetic Bearing for Novel Vernier Gimballing Magnetically Suspended Flywheel

LIU Qiang，ZHAO Yong，CAO Jian shu，REN Yuan   

  1. 1. Institute of Precision Electromagnetic Equipment and Advanced Measurement Technology, Beijing Institute of Petrochemical Technology, Beijing 102617, China；
    2. Magnetic Bearings Center for Researching and Precision Manufacturing, Beijing Institute of Petrochemical Technology, Beijing 102617, China；
    3. Department of Space Equipment, Academy of Equipment, Beijing 101416, China
  • Received:2016-12-06 Revised:2017-03-06 Online:2017-05-15 Published:2017-05-25

PDF

845

摘要：

针对微框架磁悬浮飞轮用磁阻力磁轴承存在偏转负力矩和洛伦兹力磁轴承气隙磁密均匀性较差的缺点，提出了一种基于球形转子的微框架磁悬浮飞轮，介绍了其结构、工作原理和洛伦兹力磁轴承方案。采用等效磁路法建立了洛伦兹力磁轴承磁路数学模型，得到了其径向偏转力矩和轴向平动悬浮力。利用电磁场数值分析法，对三种洛伦兹力磁轴承方案的磁密和磁通进行比较分析，得到了最优的球面梯形磁钢方案。在此基础上，结合15Nms微框架磁悬浮飞轮技术指标，对磁轴承进行了详细实例设计。根据设计结果研制了一台微框架磁悬浮飞轮，并利用线性磁密霍尔对磁轴承气隙磁密进行动态测试。测试结果与优化结果一致，对微框架磁悬浮飞轮系统整体设计具有重要意义。

关键词: 磁悬浮飞轮, 磁轴承, 微框架, 洛伦兹力, 等效磁路法

Abstract:

To remedy the limitations of the magnetic resistance type magnetic bearing with negative deflection torque and Lorentz magnetic bearing with poor gas flux density uniformity, a novel vernier gimballing magnetically suspended flywheel is presented. And its composition, operating principle and scheme of the Lorentz magnetic bearing are introduced. The equivalent magnetic circuit method is applied to the magnetic analysis of the Lorentz magnetic bearing, and its mechanics models of the radial deflection torque and translational levitation force is got. By comparatively analyzing the magnetic density with the electromagnetic numerical analysis method, the sphere trapezoid permanent magnet is adopted. Upon this, by combining the technical index of the vernier gimballing magnetically suspended flywheel with an angular moment of 15 Nms, the Lorentz magnetic bearing is designed in detail. According to design results, the vernier gimballing magnetically suspended flywheel is manufactured, and the air gap magnetic density is dynamically measured by the linear magnetic density hall sensors. The results have a good agreement with the design values, which has important significance in the design of flywheel system.

Key words: Magnetically suspended flywheel, Magnetic bearing, Vernier gimballing, Lorentz force, Equivalent magnetic circuit method

中图分类号: