关键词: 汽车平顺性；驾驶室半主动悬置；天棚阻尼控制；平滑天棚控制

Abstract: In order to verify the effectiveness of the sky-hook damping control strategy in controlling the semi-active suspension system of commercial vehicle cab, TruckSim is used to establish a vehicle model, and Simulink is used to establish a controller model and actuator model. The weighted sum of the root mean square values of vibration acceleration in all directions of cab is used as the evaluation function. By using TruckSim and Simulink co-simulation, the parameter optimization of the controller is completed under the 50 km/h automobile speed and random input road model. By comparing the evaluation function values of semi-active mounts based on sky-hook damping control or improved smooth sky-hook control and passive suspension at the same speed, it can be seen that compared to passive suspension, the semi-active suspension system of commercial vehicle cabs using sky-hook damping control strategy can significantly improve the riding comfort of the cab, resulting in a 11.39% improvement in vehicle vibration.

Key words: Automobile ride comfort; Semi-active suspension in the cab; Sky-hook damping control;Smooth sky-hook control