大气隙混合磁悬浮轴承磁场仿真与实验  

Simulation and experiment of magnetic field for large air gap HMB

作　　者：张正元 周伟[1] 封卫忠[1] 王鹏[1] ZHANG Zhengyuan;ZHOU Wei;FENG Weizhong;WANG Peng

机构地区：[1]中国飞行试验研究院,陕西西安710089

出　　处：《现代机械》2017年第6期58-62,共5页Modern Machinery

摘　　要：针对一种大气隙径向八极混合磁悬浮轴承结构,采用有限元技术和实验方法,探讨永磁和电流激励下磁场耦合特性。研究结果表明:当偏移量固定时,某方向(x或y)电流越大,其耦合现象越明显;当转子在平衡位置时或偏移量较小时(如0.5 mm),x和y两方向的电流耦合现象不明显;如转子偏移量进一步增加(达到1.2 mm),其电流磁力耦合增加,且电磁力非线性越强烈。For a radial octupole hybrid magnetic bearing with large air gap,the finite element method and experimental method are used to investigate the magnetic field coupling characteristics under the excitation of permanent magnet and current. The research results show that the coupling phenomenon become more obvious with the increase of a certain direction（ x or y） current when the rotor offset is constant. Especially,the coupling phenomenon is not obvious when the rotor is in the balance position or the offset is small. If the rotor offset has a big amount（ to 1. 2 mm）,the current magnetic coupling increases,and the nonlinearity of the electromagnetic force is stronger.

关 键 词：大气隙 混合磁悬浮轴承 耦合特性 磁场 

分 类 号：TH312[机械工程—机械制造及自动化]