主动磁力轴承支承刚度特性研究  

Study on Active Magnetic Bearing Stiffness Characteristics

作　　者：吕冬明[1] 徐春广[1] 郝娟[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081

出　　处：《轴承》2008年第11期18-22,共5页Bearing

摘　　要：以单自由度磁力轴承为研究对象,建立非线性支承力模型,通过对磁力轴承非线性支承力特性的分析,揭示出磁力轴承支承刚度与控制器参数之间的非线性关系,对磁力轴承结构设计以及控制器的设计具有指导作用。基于非线性支承力模型和线性支承力模型设计不同的控制器,对磁力轴承转子系统进行刚度试验,结果表明,基于非线性刚度模型设计的控制器具有较好的稳定性和较高的刚度,并满足系统的回转精度要求。The nonlinear bearing force model is established based on a single degree freedom magnetic bearing. By analyzing the nonlinear suspension forces, it can be seen that there is strong nonlinear relation between the suspension characteristics and the controller parameters. Different controllers are designed to conduct stiffness test for the active magnetic bearing - rotor system based on the models. The results show that the controllers based on the nonlinear forces models have the better stability and the higher stiffness, which satisfied the control rotary precision demands.

关 键 词：磁力轴承 支承特性 非线性刚度 刚度试验 

分 类 号：TH133.31[机械工程—机械制造及自动化]