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对电磁–永磁混合磁悬浮系统的悬浮刚度问题展开研究,基于混悬系统的力学模型,导出了悬浮刚度与永久磁铁的厚度、截面积、材料特性等因素及PID控制中的比例系数之间的约束关系,说明悬浮刚度大小对于混合磁悬浮系统控制功耗的影响,并分析了最优线性度下的最优悬浮刚度及最优比例系数的取值问题。分析结果表明,选取合理的永久磁铁结构及比例系数能提升系统的悬浮刚度,合理地增加悬浮刚度能降低混悬系统的控制功耗,同时提高系统的稳定性及承载能力。
Based on the mechanical model of the suspension system, the relationship between the suspension stiffness and the thickness, cross-sectional area, material properties and other factors of the permanent magnet and the proportional coefficient of the PID control The relationship between the suspension stiffness and the control power consumption of the hybrid magnetic suspension system is illustrated. The optimal suspension stiffness and optimal scaling factor are also analyzed. The analysis results show that choosing proper permanent magnet structure and proportion coefficient can improve the suspension stiffness of the system and increase the suspension stiffness reasonably can reduce the control power consumption of the suspension system and improve the system stability and bearing capacity.