From the model , we can solve and gain the values and change orders of charging current , charging voltage , discharging current , discharging voltage and inductive current . after that , the electromagnetic fields can be created from two circuits " currents , and their magnetic rector and flux can be simulated from ansys solver 用ansys multiphysics模块求解出充电电流、充电电压、放电电流、放电电压和感应电流以及这些参数随时间变化的规律：然后利用两个回路的电流耦合出电磁场，并仿真出磁矢量、磁通密度。
Next , consulting current feedback control , the flux feedback control algorithm is designed . this algorithm has two loops , the inner loop is flux feedback loop , the outer one is air gap feedback loop ; the outer loop uses pid controller whose output is expected flux density , the inner uses the proportional or pi controller whose output is the magnet control voltage 其次,参照电流环控制的串级思想,设计出了基于磁通反馈的悬浮控制算法,该算法也采用双环控制,内环为磁通环,外环为位置环;外环采用pid控制器,输出为期望磁通密度,内环采用比例或比例积分控制器,输出为电磁铁控制电压。
