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磁浮车辆在钢轨道框架慢起慢落的过程中会发生车轨耦合共振的情况,针对上海磁浮车在调试过程中遇到此类问题,进行了现场测试。测试数据说明:发生共振的频率是33Hz左右,这与钢轨道框架的垂向自振频率相同。理论分析表明,系统过程的稳定与二次悬挂的频率与阻尼、控制器的频带和阻尼、轨道的频率和阻尼及系统的基本参数(额定平衡位置、车轨质量比、线圈电阻及电感)都有关。因此在系统其他参数不变的情况下,通过改变钢轨道框架立柱的侧向刚度,也即改变钢轨道框架的自振频率,可以使系统在慢起慢落过程中稳定。
Maglev vehicles in the slow down of the track frame will occur during the course of rail coupling resonance occurs, the Shanghai Maglev in the debugging process encountered such problems, conducted a field test. Test data shows that the frequency of resonance is about 33Hz, which is the same as the vertical natural frequency of the steel track frame. Theoretical analysis shows that the stability of the system and the frequency and damping of secondary suspension, the frequency band and damping of the controller, the frequency and damping of the track and the basic parameters of the system (rated equilibrium position, mass ratio of the track, coil resistance and inductance) related. Therefore, the other parameters of the system remain the same, by changing the lateral stiffness of the rail frame column, that is, changing the natural frequency of the rail frame, you can make the system slow down slowly stable process.