Study on the Active Control Method for the Hunting Stability of Railway Vehicles
This article proposes a new active control method for a certain type of metro car in order to improve the hunting stability of the car.An actuator is mounted respectively before and behind the frame and controlled by the control system.Each actuator has a lateral degree of freedom relative to the frame and can jointly restrain the lateral vibration and the yawing vibration of the frame.A control algorithm is designed based on the full state feedback theory,the optimal control theory and the LQR controller.A dynamic model and a control system model are established with SIMPACK/Simulink to carry out the joint simulation analysis.It turns out that the lateral displacement of the wheelset has been reduced by 66.7%,the nonlinear critical speed has been increased by 16.2%and the maximum improvement in lateral ride index is 10.2%,therefore the active control method can improve the hunting stability of railway vehicles.
hunting stabilityactive controlLQR controllerlateral ride comfortoptimal control
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万方数据
维普
