【摘要】 提出一种结构新颖的圆筒型磁悬浮重力补偿器,次级采用Halbach永磁结构,具有悬浮力大、法向刚度低等特点。介绍了圆筒型磁悬浮重力补偿器的结构,建立圆筒型磁悬浮重力补偿器的数学模型,利用等效电流法对气隙磁场进行解析,推导出静态悬浮力、动态悬浮力及法向刚度的数学表达式。利用有限元法对圆筒型磁悬浮重力补偿器的静态特性进行仿真分析,阐述低刚度被动磁悬浮中的特殊问题。最后研制一台样机,通过实验测试验证了所提出圆筒型磁悬浮重力补偿器的可行性。更多还原

【Abstract】 A novel cylindrical magnetic levitation gravity compensator was proposed in this paper. The secondary adopted Halbach permanent magnet structure that had such excellent advantages as large levitation force and low vertical stiffness. The structure of this new-type magnetic levitation gravity compensator was introduced and its mathematical model was built. The air gap magnetic flux density from permanent magnet rings was calculated using equivalent current method. The expressions of static levitation force, dynamic levitation force and stiffness were derived. Through finite element simulation, the static characteristics of cylindrical magnetic levitation gravity compensator were obtained. And the special problems of low stiffness passive magnetic levitation were explained. Finally, a prototype was manufactured. The prototype experiment verified the feasibility of the proposed magnetic levitation gravity compensator.更多还原