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针对铁道车辆二系主动悬挂,考虑了轨道不平顺谱及轮轴时延的输入;依据最优控制理论,设计了整车的主动悬挂控制规律,并在整车垂向动力学模型上进行了仿真分析.分析表明,依据轨道不平顺谱以及轮轴时延能实现最佳的控制性能;但随着速度的提高,其相对于仅依靠轨道谱信息而设计最优控制规律的收益大幅下降;相对而言,铁道车辆依据轨道谱信息设计主动悬挂控制规律非常重要.
According to the optimal control theory, the control law of the active suspension of the vehicle is designed and the simulation is carried out on the vertical dynamic model of the vehicle, considering the input of the track irregularity spectrum and the wheel axle delay. The analysis shows that the optimal control performance can be achieved based on the track irregularities and the wheel axle delay. However, as the speed increases, the profit of the optimal control law is greatly reduced compared with that of the optimal control law based on the orbital spectrum information alone. It is very important that railway vehicles design active suspension control rules based on orbital spectrum information.