可控励磁磁悬浮进给平台电磁特性的有限元分析

发布时间：2018-03-18 00:34

本文选题：可控励磁　切入点：磁悬浮　出处：《机械工程学报》2017年04期 　论文类型：期刊论文

【摘要】：设计一种可控励磁直线同步电动机磁悬浮进给平台,平台与直线同步电动机动子固定相连,直线同步电动机同时实现平台的进给与悬浮。可控励磁磁悬浮进给平台的电动机定子为直流励磁,磁极既是励磁磁极也是平台的悬浮磁极,磁极与动子铁心间的法向力为平台的悬浮力,调节励磁电流改变平台的悬浮力;电枢在磁场中受到的切向力为驱动平台的电磁推力,调节电枢电流以调节平台的电磁推力。为了研究可控励磁直线同步电动机磁悬浮进给平台的电磁特性,建立了该平台的数学模型和运动方程,并在数学模型的基础之上对电磁推力与悬浮力进行有限元计算。电磁推力的解析计算结果与有限元分析结果相比较,最大相对误差为8.73%,悬浮力的解析计算结果与有限元分析的结果相比较,最大相对误差为19.15%。计算结果表明可控励磁磁悬浮进给平台运行的可行性。
[Abstract]:A controllable excitation linear synchronous motor magnetic levitation feed platform is designed. The platform is fixed to the linear synchronous motor mover. The stator of the controlled excitation magnetic levitation feed platform is DC excitation, and the magnetic pole is not only the excitation pole but also the suspended magnetic pole of the platform. The normal force between the magnetic pole and the mover core is the suspension force of the platform, and the excitation current changes the suspension force of the platform, and the tangential force of the armature in the magnetic field is the electromagnetic thrust of the driving platform. Adjusting armature current to adjust the electromagnetic thrust of the platform. In order to study the electromagnetic characteristics of the controllable excitation linear synchronous motor magnetic levitation feed platform, the mathematical model and motion equation of the platform are established. On the basis of the mathematical model, the finite element calculation of electromagnetic thrust and suspension force is carried out, and the analytical results of electromagnetic thrust are compared with the results of finite element analysis. The maximum relative error is 8.73. Compared with the finite element analysis, the maximum relative error of the suspension force is 19.150.The results show that the controllable excitation maglev feed platform is feasible.
【作者单位】：沈阳工业大学电气工程学院;
【基金】：国家自然科学基金资助项目(51575363)
【分类号】：TG502.3

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