永磁轴承的刚度研究  

Research on Stiffness of Permanent Magnetic Bearing

作　　者：高刚[1] 张钢[1] 赵志峰[1] 梁世颇[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《轴承》2008年第3期5-7,共3页Bearing

摘　　要：永磁轴承具有结构简单、无磨损等优点,可以与机械轴承或电磁轴承结合构成各种磁轴承系统。利用永磁体等效电流模型,以涡轮分子泵永磁轴承为对象建立刚度矩阵,由尺寸参数对各刚度的影响分析可知:磁环横截面为正方形时,径向刚度和耦合刚度最大;倾斜刚度的正负在正方形横截面处发生变化。The permanent magnetic bearing has many advantages： simple structure,free- friction,low-cost etc, and it can construct many types of bearing system with the mechanical bearing or the electromagnetic hearing, having wide applications. Based on the equivalent electricity model,taking the permanent magnetic bearing in turbine pump as the object,the stiffness matrix had been built and the figures of all the stiffness varying in geometrical parameters have been drawn. The results show that radial stiffness and coupling stiffness is highest with square section of magnetic loop, and tilting stiffness is dependent on structural parameter and changes at square section.

关 键 词：永磁轴承 刚度 尺寸参数Matlab 

分 类 号：TH133.31[机械工程—机械制造及自动化]