随着科学技术的发展,磁悬浮推力轴承以无摩擦、高转速、高精度、无需润滑的优点,成为高速或超高速回转机构主轴系统轴承发展的主要方向之一。本文主要对磁悬浮推力轴承运行原理分析,建模,并对其PID控制进行设计与仿真分析,其结果表明:采用PID控制,能够应对外来扰动,使转子稳定悬浮。因此,磁悬浮轴承在精准的PID控制器下,更加具有无摩擦、高转速、高精度、无需润滑的优点。 With the development of science and technology, magnetic levitation thrust bearings have become one of the main directions for spindle bearings in high-speed or ultra-high-speed slewing mechanisms with the advantages of no friction, high speed, high precision and no lubrication. In this paper, the principle of maglev thrust bearing operation is analyzed and modeled, and its PID control is designed and simulated. The results show that PID control can deal with external disturbances and make the rotor stably float. Therefore, the magnetic bearings in the precise PID controller, more frictionless, high speed, high precision, no lubrication advantages.