摘要
介绍了永磁偏磁径向磁轴承的结构及其悬浮力产生机理;用等效磁路法对混合磁轴承的磁路进行计算,得出了最大承载力的条件和数学表达式,给出了参数设计和计算过程;用有限元软件进行了仿真验算。研究结果表明:增大永磁体内部磁动势可提高轴承的承载力、稳定性及减小功放损耗;当偏磁磁通大于饱和磁通的一半时,实际承载力最大。
The structure and the basic working principle of producing magnetic suspension forces of permanent magnet biased radial magnetic bearing were introduced. The flux path was calculated by using the method of equivalent magnetic circuit, and the mathematical expressions and some equations were deduced for maximum carrying capacity, and the parameter design and calculation process were presented, which were simulated and calculated by using finite element analysis. The research results show that increasing the magnetic motive force of permanent magnet the carrying capacity and stability of the bearing can be improved,the power consumption is decreased; when the bias flux is more than a half of the saturated flux, the actual carrying capacity is the most.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2007年第10期1143-1146,共4页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50575099)
关键词
永磁偏磁
混合磁轴承
参数设计
有限元分析
permanent magnet biased
hybrid magnetic bearing
parameter design
finite element a- nalysis
