摘要
介绍了一种新结构混合型轴向磁悬浮轴承(HAMB)的结构与工作原理。该结构的混合型轴向磁悬浮轴承利用永磁体来建立偏置磁场,控制磁场由电磁线圈产生,通过控制电磁线圈中电流的大小和方向,产生可控的轴向悬浮力。提出了一种基于磁通量计算的参数设计方法,首先计算出要达到额定承载力所需的磁路中的总磁通量,从而可得出各关键截面处磁场的磁通密度,各个关键截面的结构参数应使该截面处的磁通密度在磁性材料磁化曲线的线性区间内变化。利用有限元分析软件对设计结果进行了电磁场仿真,仿真结果验证了参数设计方法的合理性与正确性。
An original hybrid axial magnetic bearing＇s （HAMB＇s） configuration and operating principle are introduced. This type of hybrid axial magnetic bearing utilizes permanent magnets to establish bias magnetic field. Its control magnetic field is established by magnet wires. Controllable axial levitating force is produced through adjusting the magnitude and direction of current in the magnet wires. A method of parameter design is proposed based on flux calculation. We also determined the amount of flux needed for getting rated bearing force and the flux density in every key section. The parameters of the key section should make its flux density never exceed the linear range of magnetization curve. Magnetic field simulation is performed by using FEA software. The result of simulation validates the rationality and validity of the parameter design method.
出处
《机械科学与技术》
CSCD
北大核心
2009年第10期1370-1374,1378,共6页
Mechanical Science and Technology for Aerospace Engineering
