磁悬浮动量轮的主动振动控制

Active Vibration Suppression for Magnetically Suspended Momentum Wheels

由于同传统的滚珠轴承动量轮相比 ,磁悬浮动量轮的定子和转子之间没有接触 ,不需要润滑 ,允许高速旋转 ,而且磁悬浮动量轮可以提供框架控制能力 ,因而磁悬浮动量轮被认为是未来高精度航天器姿态控制的理想执行机构。然而尽管与传统动量轮产生干扰力矩的机理不同 ,磁悬动量轮本身还是存在一些振动源。如何消除这些振动源引起的扰动 ,即磁悬浮动量轮的主动振动控制 ,这是将磁悬浮动量轮应用于航天器姿态控制所要解决的主要问题。

Compared with traditional ball bearing momentum wheels, magnetically suspended momentum wheels have the advantages as no contact and lubrication between stator and rotor, allowing high-speed rotation and providing gimballing capability. Therefore magnetically suspended momentum wheels are considered as ideal actuators for future spacecraft attitude control with high accuracy requirements. Although the mechanism of producing disturbance torque is different to that of conventional ball bearing momentum wheels, unfortunately there are still several possible disturbing sources in magnetically suspended momentum wheels. How to eliminate these disturbances, that is to say the active vibration control of magnetically suspended momentum wheel is the main problem in order to apply magnetically suspended momentum wheel to spacecraft attitude control.