As one of the common methods of unbalance control,auto-balancing has a wide range of applications in magnetic bearing system.Although auto-balancing can effectively improve the stability of the magnetic bearing system,it is easy to cause system oscillations when operating near the critical speed of the radial rigid body,which cannot ensure the stable operation of the rotor in the full speed range.In this regard,this article proposes a magnetic bearing unbalance control based on phase shift notch filter,which improves the open loop gain of the system by changing the phase angle of the notch filter in different speed ranges,thereby ensuring the stable operation of the rotor in all frequency bands.
关键词
磁悬浮轴承/自动平衡/相移补偿/陷波滤波器
Key words
magnetic bearing/auto-balancing/phase shift compensation/notch filter
维普
万方数据