圆筒型Halbach次级结构磁悬浮重力补偿器  

A Cylindrical Magnetic Levitation Gravity Compensator with Halbach Secondary Structure

作　　者：张赫[1] 寇宝泉[1] 金银锡[1] 张海林[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001

出　　处：《电工技术学报》2016年第6期30-37,共8页Transactions of China Electrotechnical Society

基　　金：国家科技重大专项(2009ZX02207-001);国家自然科学基金青年科学基金(51507034);中央高校基本科研业务费专项资金(HIT.NSRIF.2017011)资助项目

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。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.

关 键 词：磁悬浮 重力补偿器 低刚度 磁场解析 HALBACH 永磁阵列 音圈电机 

分 类 号：TM35[电气工程—电机]