电磁轴承-无轴承电机系统在转子主动控制的应用研究

Application of an Active Magnetic Bearing and Bearingless Motor System to the Active Vibration Control of a Shaft

主动磁轴承借助电磁力来控制转子的振动,无轴承电机在实现转矩控制的同时实现电机的悬浮控制。本文在对永磁偏置三自由度电磁轴承和两自由度无轴承电机的磁悬浮机理一般性描述的基础上,分析了其产生的悬浮控制力。并以转子电磁振动为研究对象,结合电磁轴承和无轴承电机的特点,提出利用一种新型的五自由度磁悬浮异步电机作为执行机构对转子电磁振动进行主动控制,实现了转子系统稳定工作。此系统可以有两方面的应用,既可以用做转子的支承,也可以用做转子振动主动控制的增稳。

Based on the introduction of the suspension principle of permanent magnet biased electromagnetic bearing with three degrees of freedom and bearingless induction motor with two degrees of freedom, the suspension control force on radial and axial components are analyzed. Aiming at the electromagnetic vibration of a rotor, and by combining the aetive magnetic bearing with the bearingless motor, a new type of magnetic suspension induetion motor constructed with five degrees of freedom is utilized to control the electromagnetic vibration of the shaft. The operation of the rotor system is stable. The system with the new type of magnetic suspension induction motor is proved to be the way to improving the stabilization of the active vibration eontrol of a shaft and the beating of the rotor