A One-Axis-Controlled Magnetic Bearing and Its Performance ( Magnetic Bearing)
A One-Axis-Controlled Magnetic Bearing and Its Performance ( Magnetic Bearing)
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一种单轴控制磁力轴承及其性能（磁力轴承）
DOI：
10.1299/jsmec.46.391
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
A. Shimokohbe
中科院分区：
文献类型：
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作者：
Lichuan Li;T. Shinshi;Jiro Kuroki;A. Shimokohbe
磁轴承（MB）是一种复杂的机器，其中必须使用传感器和控制器来稳定转子。标准MB需要对五个运动轴进行主动控制，这带来了显著的复杂性和高成本。在本文中，我们报告了一个非常简单的MB和它的实验测试。在该MB中，转子仅通过一个运动轴的主动控制来稳定。其他四个运动轴由永磁体和适当的磁路设计被动稳定。在被动稳定的转子径向平移运动中，当转子质量为11.5×10- 3 kg时，获得了205 Hz的共振频率。该MB具有几乎为零的控制电流和零转子铁损（磁滞和涡流损耗）。虽然转速和精度受到被动稳定轴共振的限制，但MB仍然适用于成本至关重要但性能不重要的应用，例如冷却风扇和空气动力轴承的辅助支撑。
Magnetic bearings (MBs) are complex machines in which sensors and controllers must be used to stabilize the rotor. A standard MB requires active control of five motion axes, imposing significant complexity and high cost. In this paper we report a very simple MB and its experimental testing. In this MB, the rotor is stabilized by active control of only one motion axis. The other four motion axes are passively stabilized by permanent magnets and appropriate magnetic circuit design. In rotor radial translational motion, which is passively stabilized, a resonant frequency of 205Hz is achieved for a rotor mass of 11.5×10-3kg. This MB features virtually zero control current and zero rotor iron loss (hysteresis and eddy current losses). Although the rotational speed and accuracy are limited by the resonance of passively stabilized axes, the MB is still suitable for applications where cost is critical but performance is not, such as cooling fans and auxiliary support for aerodynamic bearings.