Hard disk rotors suspended by active magnetic bearings consists of stators, rotors, magnetic actuators, sensors, controllers and power amplifiers.

磁悬浮硬盘转子系统由定子、转子、电磁作动器、传感器、控制器和放大器等部件组成。

youdao

These excellent single crystals, possessing a large displacement output under low magnetic field, build a foundation for the fabrication of the high precision micro-displacement actuators.

单晶材料消除了晶界对畴壁移动的影响，具有很好的低场下的位移输出能力，这为微位移致动器的研制奠定了很好的基础。

youdao

Through these experiments, we find that the micro actuators vibrate in high frequency under the action of the alternating magnetic field, which make the micro robot model move forward in the water.

实验表明，该模型在交变磁场的作用下，微执行器将做高频率划动，使水下微机器人模型能够在水中产生运动。

youdao