地铁车辆柔性车体半主动悬挂天棚模糊控制

Skyhook Fuzzy Control of Semi-active Suspensions of Flexible Carbodies of Metro Vehicles

为了提高地铁车辆乘坐舒适度,采用天棚模糊控制策略对地铁车辆车体横向振动进行控制。由于地铁车辆车体的轻量化以及运营时速的不断提高,在搭建地铁车辆动力学模型时需考虑车体柔性特征。因此,搭建基于柔性车体的地铁车辆刚柔耦合动力学模型,对车体振动进行计算并与刚性车辆模型及实测数据对比。将地铁车辆刚柔耦合动力学模型导入MATLAB,基于天棚模糊控制策略建立联合仿真控制模型仿真车体振动,并且与不同控制策略对比。结果表明:考虑车体柔性的地铁车辆刚柔耦合动力学模型仿真结果更加接近实测情况,基于天棚阻尼的模糊复合控制相比于传统的天棚阻尼控制,能够取得更优的减振效果,使车辆的动力学性能得到更大程度改善。

In order to improve the ride comfort of subway vehicles,a fuzzy ceiling control strategy was used to control the lateral vibration of the subway carbody.Due to the lightweight of the subway carbody and the continuous improvement of operating speed,the flexibility of the carbody should be considered when the dynamic model of the subway car is constructed.Therefore,a rigid-flexible coupling dynamics model of metro vehicles based on a flexible car body was built,and the vibration of the car body was simulated and compared with that of the rigid vehicle model and the measured data.The rigid-flexible coupling dynamics model of the metro vehicle was imported into MATLAB,and a joint simulation control model was established based on the fuzzy control strategy of the ceiling to simulate the vibration of the carbody,and the results were compared with those of different control strategies.The results show that the simulation results of the rigid-flexible coupling dynamics model of the metro vehicle considering the flexibility of the carbody are closer to those of the actual measurement situation.Compared with the traditional ceiling damping control,the fuzzy composite control based on the ceiling damping can achieve better damping effects.Dynamic performance has been improved more greatly.