摘要
为了研究高速磁浮导向及曲线通过性能,利用组装模型曲线通过仿真,提出了磁浮导向原理及菱形变位解决方案。基于三类基本模块(悬浮导向单元、悬浮框架和车体及牵引机构),组装半车(2转向架)模型、整车模型和动车组模型。这些组装模型具有约束的柔顺性、动力学与控制的高度集成性和模块化组装等特点。曲线通过仿真表明:在主动导向控制下,电磁横向力应使走行部弯曲并与轨道对中。与轮轨转向架类似,前后悬浮框架间的菱形变位可以降低电磁横向力,提高悬浮转向架的横向稳定性。由于车体端部摆杆摆角较大,所以车体空气弹簧支承刚度对两端电磁横向力产生了非常敏感的影响,进而产生端部减载问题。这种端部横向力敏感变化及端部减载问题得到了测试数据的证实。
For the investigation of high-speed maglev guidance and curve negotiation performance, the maglev guidance principle and the warp deformation solution were presented based on the assembled models and curve negotiation simulations. The half vehicle （with two bogies）, full vehicle and EMU models are assembled with three elementary modules （levitating and guiding unit, levitating frame and carbody with traction gears）. These assembled models have such features as the compliance of restrictions, the tightest integration of dynamics and control, and modularized assembly. The curve negotiation simulations show that under active guidance control, the structure of running gear is bent and aligned with the curve by the electro-magnetic （EM） lateral forces. Like the rail-wheel bogie, the warp deformations between the fore and rear levitating frames are able to reduce the EM lateral forces and increase the lateral stability of the levitating bogies. Since the bigger angles of the swing rods which are articulated between carbody and bolsters at two ends, the corresponding EM lateral forces are shown to be sensitive to the total stiffness of carbodyls air spring suspension, and further result in the end unloading problem. These sensitive changes of the end EM lateral forces and the end unloading problem are validated by the vehicle test results.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2008年第4期103-108,共6页
China Railway Science
基金
国家“八六三”计划项目(2006AA04Z160)
国家自然科学基金资助项目(10402032)
关键词
高速磁浮列车
多体动力学与控制
悬浮转向架
磁浮导向原理
High-speed maglev train
Multi-body dynamics and control
Levitating bogie
Maglev guidance principle
