摘要
采用等效磁路法对主动磁悬浮轴承进行了建模,结合有限元软件分析了磁路法在忽略轴承漏磁及磁饱和现象时导致的轴承承载力误差,并重点对磁饱和现象进行了研究。采用有限元软件获取了主动磁悬浮轴承结构参数改变时磁饱和的变化规律,在此基础上从饱和控制电流的角度出发,对磁饱和进行了定量描述,对磁饱和程度进行评估,并将表征饱和程度的拟合表达式与有限元仿真计算结果进行了对比,证明该表达式的计算精度较高。
The active magnetic bearing is modeled by the equivalent magnetic circuit method, and the calculation error of bearing load capacity caused by neglecting leakage flux and magnetic saturation is analyzed in combination of the finite element method, while the research is focused on the magnetic saturation. With the change of the structure parameters of the active magnetic bearing, the change law of the magnetic saturation in magnetic bearings is obtained using the finite element method. Based on this, the magnetic saturation is quantitatively described from the perspective of saturated controlling current. Furthermore, the saturation degree of the bearing is evaluated and its fitting expression is compared with the calculating results of finite element method, in which high calculation accuracy is achieved.
出处
《轴承》
北大核心
2017年第2期12-18,共7页
Bearing
基金
国家自然科学基金项目(51405351)
湖北省自然科学基金重大项目(创新群体)(2014CFA013)
关键词
主动磁悬浮轴承
磁饱和
饱和控制电流
有限元法
active magnetic bearing
magnetic saturation
saturated controlling current
finite element method
