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首页> 外文期刊>JSME International Journal. Series C, Mechanical Systems, Machine Elements and Manufacturing >A One-Axis-Controlled Magnetic Bearing and Its Performance
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A One-Axis-Controlled Magnetic Bearing and Its Performance

机译：一轴控制的电磁轴承及其性能

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摘要

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 205 Hz is achieved for a rotor mass of 11.5 X l0~(-3) kg. 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.
机译：电磁轴承（MB）是复杂的机器，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，这会带来很大的复杂性和高成本。在本文中，我们报告了一个非常简单的MB及其实验测试。在该MB中，仅通过主动控制一个运动轴即可使转子稳定。其他四个运动轴通过永磁体和适当的磁路设计被动稳定。在被动地稳定的转子径向平移运动中，转子质量为11.5 X l0〜（-3）kg时，共振频率为205 Hz。该MB几乎具有零控制电流和零转子铁损（磁滞和涡流损耗）的特性。尽管旋转速度和精度受被动稳定轴的共振限制，但MB仍然适用于对成本至关重要但对性能要求不高的应用，例如冷却风扇和气动轴承的辅助支撑。

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