磁悬挂天平的变结构控制

Variable Structure Control of Magnetic Suspension and Balance System

鉴于磁悬挂天平系统强烈的非线性特性及存在的多种不确定性 ,针对非匹配不确定性情况设计了变结构控制器。根据对悬浮时模型受力图的分析及其模型两端电磁力、电流和电压的平衡关系 ,并以Y轴方向受力为例 ,讨论了磁悬挂天平的非线性变结构设计过程。该设计的目的是使镇定误差趋近于 0 ,其设计步骤包括期望性能到期望力的传递、满足滑动模态可达条件的控制力到控制电压的传递、控制电压的求解。同时对设计的结果进行了仿真分析 。

In view of the strong nonlinear feature of the magnetic suspension and balance system,variable structure controller is designed Taking the Y axis as an example,the procedure of designing nonlinear variable structure controller is discussed The aim is to keep the error as zero The design step includes three aspects The design consequence is emulated at the same time The result of the emulation shows that the dynamic properties of the system are upstanding