Magnetic force characteristics and structure of a novel radial hybrid magnetic bearing

doi:10.4028/www.scientific.net/AMM.150.69

CORC > 兰州理工大学 > 兰州理工大学

	Magnetic force characteristics and structure of a novel radial hybrid magnetic bearing
	Chen, Junhui; Yang, Fengyu; Nie, Chaorui; Yang, Jun; Wan, Pengyan
	2012
会议日期	August 20, 2011 - August 22, 2011
会议地点	Shanghai, China
关键词	Magnetic bearings Magnetic circuits Magnetic flux Nonlinear equations Permanent magnets Rigidity Stabilization Stiffness Air gap flux density Air-gaps Bearing structure Current stiffness Equilibrium positions Halbach array Hybrid magnetic bearing Initial gap Linear relationships Magnetic characteristic Magnetic force Molecular methods Negative stiffness Non-linear model Nonlinear characteristics Permanent magnet biased magnetic bearing Permanent magnetic bearings Permanent magnetics Self-stabilization Virtual displacements
卷号	150
DOI	10.4028/www.scientific.net/AMM.150.69
页码	69-74
英文摘要	There are some problems in the permanent magnetic circuit of the current permanent magnet biased magnetic bearings, such as small magnetic force, low magnetic flux density and lack of self-stabilization. To solve this problem, a new hybrid radial magnetic bearing structure has been proposed. The nonlinear model and linearization equation of the new hybrid radial magnetic bearing capacity has been established by current molecular method and virtual displacement theorem. It is found that the permanent magnetic bearing can achieve self-stabilization in the radial degrees of freedom and can reduce the total displacement of negative stiffness. The results show that the air gap flux density is greatly improved by the new hybrid magnetic bearing with Halbach array structure. Current stiffness and displacement rigidity is closely related to initial current and initial gap of the equilibrium position. Near the equilibrium position, current stiffness and displacement rigidity are linear relationship. With the increase of air gap, it remains a good linearity. While with the decrease of air gap, it presents nonlinear characteristics. © (2012) Trans Tech Publications.
会议录	Applied Mechanics and Materials
会议录出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
语种	英语
ISSN号	16609336
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115971]
专题	兰州理工大学
作者单位	Research Institute of Magnetic Physics and Magnetic Technology, Lanzhou University of Technology, Lanzhou, China
推荐引用方式 GB/T 7714	Chen, Junhui,Yang, Fengyu,Nie, Chaorui,et al. Magnetic force characteristics and structure of a novel radial hybrid magnetic bearing[C]. 见:. Shanghai, China. August 20, 2011 - August 22, 2011.