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.
出处
《轴承》
北大核心
2008年第11期18-22,共5页
Bearing
关键词
磁力轴承
支承特性
非线性刚度
刚度试验
magnetic bearing
suspension characteristics
nonlinear stiffness
stiffness test
