永磁混合悬浮磁铁设计及特性分析(英文)  

Optimal Design and Characteristic Analysis of Hybrid Magnet in Maglev System

作　　者：陈慧星[1] 李云钢[1] 龙志强[1] 常文森[1] 

机构地区：[1]国防科学技术大学三院磁悬浮技术研究中心,长沙410073

出　　处：《系统仿真学报》2010年第4期837-840,共4页Journal of System Simulation

基　　金：nature science foundation of China under contract (NO. 60874015)

摘　　要：基于磁路电路等效性原理,构建了混合悬浮系统的数学模型,并从承载力、可控性及永磁工作点对混合悬浮磁铁进行了优化设计。对于设计的混合磁铁,进行了刚度问题的分析,推导了刚度与永久磁铁截面积及厚度的关系,并导出在最优间隙反馈系数下混合磁铁结构的最优悬浮刚度。有限元仿真结果表明,适当增加永久磁铁的截面积能提高混合磁铁的承载能力、可控性及悬浮刚度,并使永磁材料工作于最大能积点附近。The successful realization of a near-zero-power-loss hybrid Maglev system relies heavily on the optimal design of the hybrid magnet consisting permanent magnets （PM） and electro magnets. The mathematical model for hybrid levitation system was built based on the correspondence between the electro-circuit and the magnetic circuit. And the hybrid magnet＇s structure was optimized from three aspects,as lift force,controllability and working point of the PM. Researches on the stiffness of the hybrid magnet,and the constraint relationship between the stiffness and the structural parameters of PM were carried out. Also,the optimal stiffness under the optimal feedback coefficients was proposed. The results of theoretical analysis and simulation show that increasing the cross section area of PM properly is a perfect method of optimizing PM,which can not only increase the lift force and controllability and levitation stiffness of the hybrid magnet,but also make PM work at its maximum energy point.

关 键 词：混合磁铁 优化设计 悬浮刚度 最大能积点 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]