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针对磁悬浮反作用飞轮转子系统,提出了一种描述混合磁轴承动反力的新模型.基于拉格朗日原理,将飞轮转子两去重面内不平衡质量矩等效至两端径向磁轴承位置,并与转子惯性轴偏离几何轴引起的离心力共同作用,得到磁轴承动反力.仿真结果表明:转子两不平衡质量矩大小相等时,其振幅从相位差φa-φb=0时的30μm减小至φa-φb=π时的10μm(减小了2/3),从转速为1000 r/min时的5μm增加至5000 r/min时的10μm(增加了1倍).测试实验结果与仿真结果一致,为飞轮系统高精度高稳定度控制奠定了基础.
Aiming at the magnetic suspension reaction flywheel rotor system, a new model describing the reaction force of the hybrid magnetic bearing is proposed. Based on the Lagrange principle, the unbalanced mass moment of flywheel rotor is deduced to be equivalent to the two-end radial magnetic bearing Position of the rotor and the centrifugal force caused by the deviation of the inertia axis of the rotor from the geometric axis, the dynamic reaction force of the magnetic bearing is obtained.The simulation results show that when the unbalanced moment of mass of the rotor is equal in magnitude, To 10 μm (reduced by 2/3) at φa-φb = π and increased from 5 μm at 1000 r / min to 10 μm (an increase of 1 ×) at 5000 r / min Test Results The simulation results are consistent, which laid the foundation for high-precision and high-stability control of flywheel system.