铁道车辆横向主动悬挂试验研究

Experimental Study on Lateral Active Suspension in Railway Vehicles

建立了铁道车辆１：８比例的半车四自由度横向主动悬挂试验模型，应用ＬＱＲ控制方法进行了主动悬挂与被动悬挂的试验对比研究，并与仿真计算结果进行比较。研究结果表明，主动悬挂方式能有效衰减振动，尤其是共振点处的振动；主动悬挂与被动悬挂相比，车体横移振幅在高频共振点附近平均降低８０％左右，在其余频段平均降低约３０％；车体侧滚角振幅在高频共振点附近平均降低６５％左右，在其余频段平均降低约２０％。

A one eighth scale half vehicle lateral active suspension experimental model with four degrees of freedom is established. The active suspension and passive suspension experiments are comparatively studied with LQR control law, and the experimental results is comparied with the simulation results. It is shown that the active suspension can effectively attenuate vibration, especially the vibration at the resonant frequency. Compared with the passive suspension, the amplitudes of the lateral and roll vibrations of the car body are reduced by 80% and 65% respectively on the average at high frequency resonant band in active suspension, and 30% and 25% respectively on the average at the rest of the frequency band.