磁浮轨道巡检车侧向动力学研究

Lateral Dynamics Study of MagLev Track Inspection Vehicle

为研究一种新型磁浮轨道巡检车的侧向动力学性能和评价其导向系统的安全性,建立了11自由度的车辆动力学模型,模型着重考虑了巡检车的侧向位移、侧倾和横摆运动。在MATLAB环境下建立和求解了模型的微分方程,仿真分析了以稳定速度通过曲线轨道时车辆的动力学响应。结果表明,车辆在未设轨道超高的情况下通过曲线轨道时,内侧的导向弹簧受力变化较大,外侧受力变化较小;车辆在通过曲线轨道时会有较明显的横摆运动;车速的变化对导向力和横摆运动有较大的影响。

For studying the lateral dynamic performance of a new-type MagLev track inspection vehicle and evaluating the safety of guide system, an 11 DOF lateral dynamic model was proposed considering the lateral displacement, roll and yaw motions. Equations of motion were developed and solved in MATLAB Environment. Dynamic responses of the vehicle were obtained while driving through a curved track with a constant speed. It is shown by simulation that the lateral guide force of guide tires on inside of the curve varies in a larger scale contrast to that on outside and yaw motion of the vehicle takes place when the vehicle passes through curved tracks without cant. The vehicle speed has much effect on the value of guide force and yaw angle velocity.