摘要
为研究磁浮列车在柔性轨道梁上易发生车轨耦合振动的问题,针对一种轨道梁-悬浮电磁铁-车体垂向耦合振动模型,采用AHP(层次分析法)求取系统二次型性能指标中状态加权矩阵的权重系数,并采用2种不同的状态反馈控制器(1:考虑轨道梁、悬浮电磁铁和车体的振动状态;2:仅考虑悬浮电磁铁的振动状态)对磁浮系统进行动力学仿真分析以及振动机理分析,得出以下结论:当轨道梁阻尼较小时,在轨道梁振动频率低于50 rad/s时,在控制器1的控制下,悬浮系统能吸收轨道梁的振动能量,实现系统在柔性轨道梁上的稳定悬浮;而在控制器2的控制下,悬浮系统则向轨道梁输出能量,导致系统悬浮失稳。该研究结论可为悬浮控制器的优化设计提供一定的参考。
In order to study the problem of vehicle-guideway coupling vibration of a maglev train on a flexible track beam,aiming at a vertical coupling vibration model including a flexible track beam,a levitation magnet and a cabin,AHP(analytic hierarchy process)method was used to calculate the weight coefficient of the state weighting matrix in the quadratic performance index of the system,and the dynamic simulation and vibration mechanism analysis of the maglev system were analyzed by using two different state feedback controllers(Controller 1:considers the vibration state of track beam,levitation electromagnet and vehicle body;Controller 2:only considers the vibration state of the levitation electromagnet).The following conclusions can be drawn:the maglev system can acquire stable static levitation on the flexible track beam under the control of Controller 1 when the track beam damping is low,because the levitation system can absorb the vibration energy of the track beam when the vibration frequency of the track beam is under 50 rad/s.However,under the control of Controller 2,the levitation system outputs energy to the track beam,causing instability of the maglev system.The research conclusions can provide some reference for the optimization design of the levitation controller to a certain extent.
作者
汪科任
罗世辉
陈晓昊
马卫华
邹瑞明
WANG Keren;LUO Shihui;CHENG Xiaohao;MA Weihua;ZOU Ruiming(State Key Laboratory of Traction Power, Southwest Jiaotong University,Chengdu 610031,China)
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2020年第11期29-35,共7页
Journal of the China Railway Society
基金
国家自然科学基金(51875483)
四川省科技计划(2018RZ0132,2018GZ0056)。
关键词
层次分析法
振动机理分析
车轨耦合振动
柔性轨道梁
静悬浮稳定
analytic hierarchy process
vibration mechanism analysis
vehicle-guideway coupling vibration
flexible track beam
static suspension stability
