The characteristic of power amplifier is closely related to the stability and characteristics of magnetic suspended disk.
磁悬浮盘片能否实现稳定悬浮并具有良好的性能，与功率放大器性能的好坏密切相关。
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。
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