列车横向半主动悬挂建模及其模糊控制仿真  

Modeling and Simulation of Railway Vehicles' Lateral Semi-active Suspension Based on Fuzzy Control

作　　者：李广军[1] 金炜东[1] 王骏[1] 丁建明[2] 

机构地区：[1]西南交通大学电气学院,成都610031 [2]西南交通大学牵引动力国家实验室,成都610031

出　　处：《系统仿真学报》2011年第8期1634-1638,共5页Journal of System Simulation

基　　金：国家自然科学基金(60971103)

摘　　要：列车横向振动是影响横向平稳性的主要原因,通过调整列车半主动悬挂系统的阻尼可以抑制横向振动,但是如何调整系统的阻尼一直是难点问题。针对17个自由度的半主动悬挂系统,在simlink仿真软件中建立了其模型及模糊控制仿真图。该模型以横向半主动悬挂加速度最小为控制目标,设计了鲁棒性强的模糊控制器来实时调整系统阻尼,从而减少横向振动,提高列车运行的横向平稳性。以美国六级轨道谱为输入进行数学仿真,仿真结果表明:基于模糊控制的列车加速度均方根值明显降低,半主动悬挂模糊控制效果明显好于被动悬挂系统,有效地减少了列车的横向振动。Research was done about railway vehicles＇ lateral semi-active suspension system based on fuzzy control to reduce vibration through adjusting damping parameter.Lateral vibration is the main factors for lateral stability of the railway vehicles,which can be reduced by railway vehicles＇ lateral semi-active suspension system＇s damping parameter,but it＇s a difficult problem for the system about how to adjust it.To improve the ride quality and reduce lateral vibrations,the 17-DOF vehicle semi-active suspension system was modeled by Simulink software,and then the fuzzy controller was designed with high robust performance to adjust damping parameter by taking the suspension＇s acceleration and velocity as the controlling objectives.Simulation analysis used software Matlab 7.0 in the input condition of the sixth track spectrum of America,and computation result by the means of root mean square（RMS） shows that lateral acceleration of the body significantly decreases with fuzzy control.The result indicates semi-active suspension with fuzzy control is better than passive suspension at the same time.

关 键 词：半主动悬挂 横向振动 车体横向加速度 模糊控制 

分 类 号：U206.11[交通运输工程—道路与铁道工程]