The control characteristics of axial single freedom AMB were analyzed.
分析了轴向单自由度磁轴承的控制特性；
The five degrees-of-freedom flywheel is supported by two radial magnetic bearings and a axial magnetic bearing.
先完成了电磁轴承在单自由度方向上电磁力描述，给出了电磁力和控制电流、位移之间的关系；
Through the analysis series, found the curve for former fourth-order magnetic resonance frequency of single degree of freedom magnetic bearing system changes with the axial gap and bias current;
通过一系列的分析，找到了单自由度磁轴承系统前四阶共振频率随轴向磁隙和偏置电流的变化规律曲线；
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