磁力轴承的发展及应用

综述磁力轴承的基本原理、优越性、分类、发展历史以及国内外应用研究现状,特别是磁力轴承在转子振动主动控制中的应用—电磁动力吸振器;提出电磁动力吸振器固有频率控制的新方法—间隙控制法,即保持电磁铁线圈电流不变,只通过调整电磁动力吸振器与转子之间的间隙来改变动力吸振器的固有频率;详细论述了采用间隙控制法的间隙控制型电磁动力吸振器的结构和原理。通过分析刚度计算公式,表明采用间隙控制法的电磁动力吸振器,固有频率调节范围宽,系统功耗小,响应速度快。

Development and Application of Magnetic Bearings

The basic principle,development history,classification,superiority of magnetic bearings and the domestic and international study on magnetic bearings are introduced in the text,especially the application of magnetic bearings in rotors' active control is presented in detail.Put forward a new method to tune the natural frequency of the magnetic dynamic absorber,by which the current in the coil keeps unchanging,and the clearance between magnet and the rotor's surface is controlled by motor.Defined the clearance controlled magnetic dynamic absorber,the structure and principle of this magnetic absorber is presented,the relationship of stiffness and current and clearance is researched,which indicated the magnetic dynamic absorber is low power assume and has short response time,and the rang of frequency is wide.