高速列车座椅主动悬架的多模态控制研究

Research on Multi-modal Control for Active Suspension of High-speed Train Seat

建立了基于主动悬架的高速列车悬架-座椅-人体的四自由度动力学模型,并对该列车模型稳定性的优化控制进行了研究。针对该座椅主动悬架模型设计了模糊控制器和复合P-模糊-PID的多模态控制器,应用Matlab/Simulink软件在相同的工况下进行仿真实验,并将两种控制方法下的仿真结果与被动悬架车辆模型的仿真结果进行对比分析。结果表明,相较于被动悬架车辆模型,上述两种控制方法下的主动模型座椅处的振动特性均得到了改善,达到了预期的控制效果,且多模态控制下的改善程度最佳;对高速列车乘坐舒适性的提高有着一定的理论参考意义。

A four-degree-of-freedom dynamic model of high-speed train suspension-seat-human body suspension is established based on active suspension, and the optimal control of the train model’s stability is studied. For this model, fuzzy controller and compound P-fuzzy-PID multi-modal controller are designed, under the same working condition, the simulation experiment is carried out by using the software of MATLAB/Simulink, the simulation results of the two control methods are compared with those of the passive suspension vehicle model. The results show that the vibration characteristics of the active model seat under the above two control methods are improved, and the expected control effect has been achieved which compare with passive suspension vehicle model, and the effect of the multi-modal control is better. It also has certain theoretical reference significance for improving the ride comfort of high-speed train.