摘要
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。
Aiming at problems of resonance vibration during maglev trains suspending or loading on the steel track frame,series of analysis are made.The correlative data show the cause of resonance is that the natural frequency of the system is close to the one in vertical direction for the steel track frame.The theoretical analysis indicates,that the system stability is related with natural frequencies and damping of the parts of the system and its basic parameters(such as the equilibrium position,the mass ratio of the train and the track and resistance and inductance of coils).By changing the jamb rigidity of the steel track frame(that means changing the natural frequencies of the steel track frame),the system can be stable during the course of the suspending and loading when other parameters are unaltered.
出处
《振动与冲击》
EI
CSCD
北大核心
2006年第6期46-48,75,共4页
Journal of Vibration and Shock
关键词
磁悬浮列车
钢轨道框架
共振
稳定
maglev trains,steel track frame,resonance vibration, stability
