电磁轴承陀螺力矩耦合及其交叉解耦分析

Analysis of gyroscopic coupling and cross decoupling properties on the electromagnetic bearing

对飞轮类转子的电磁轴承的陀螺力矩耦合现象进行分析,并对径向四自由度系统建模,应用软件方法在控制中对其进行速度交叉解耦补偿.系统解耦前后的仿真对比表明,消除了陀螺力矩耦合对系统在高速下的稳定裕度的影响,并提出了低、高速采用不同控制方法的新思想.

This paper analyzes the flywheel rotor＇s gyroscopic coupling effect on the electromagnetic bearing and derives the motion equations of radial four- degree- of- freedom rotors. It eliminates the coupling effect on rotor system stability margin under high rotational-speed by means of speed cross decoupling compensation. After simulation, it brings forward a new method, that of adopting a different control law under rotational speed difference.