轨道高低不平顺对磁浮车辆动力学性能的影响

Influence of Track Vertical Irregularity on Dynamic Performance of Maglev Vehicles

根据悬浮电磁铁产生的悬浮力为分布力这一特性,建立了多力元模拟单悬浮电磁铁线圈悬浮力的磁浮车辆垂向动力学模型,利用SIMPACK多体动力学软件建立了单力元、三力元、五力元模拟单悬浮电磁铁线圈悬浮力的磁浮车辆动力学模型,分析比较了多力元模拟悬浮电磁铁线圈悬浮力和实际悬浮力之间的差异,并且在不同波长轨道高低不平顺激励下进行了仿真计算,利用计算结果分析了不同波长的轨道垂向激励对磁浮车辆系统动力学指标的影响规律,得到了磁浮车辆对不同波长的轨道垂向激励动力响应的基本规律,证明了单力元模拟悬浮电磁铁线圈悬浮力的磁浮车辆动力学模型在轨道短波激励仿真计算中的局限性。

According to the characteristics of the distributed force generated by the suspension electromagnet,the maglev vehicle vertical dynamic model whose suspension force generated by single electromagnet coil was simulated by multi-force elements was established.The maglev vehicle dynamic models was established by SIMPACK software which suspension forces generated by single electromagnet coil was simulated by single force element and three force elements and five force elements respectively.The difference between the actual levitation force and the levitation force simulated by multi-force elements was analyzed and compared.The simulation calculation was carried out under the excitation of track irregularity of different wavelengths.The influence of track vertical irregularities excitation of different wavelengths on the dynamics index of the maglev vehicle system was analyzed.The law of the dynamic response of the maglev vehicle to the different wavelength vertical excitation was obtained.The limitation of dynamic simulation of maglev vehicle dynamic model which suspension force was simulated by single force element with short-wave excitation was proved.