Abstract: Suspension is one of the key components of the vehicle chassis system and has a significant impact on vehicle ride comfort. Traditional passive suspensions cannot adjust their damping according to the operating conditions of the vehicle, resulting in limited vibration reduction effects. Semi-active suspensions can adjust their damping in real time according to different operating conditions, effectively improving the ride comfort of the vehicle. This article establishes a simulation model of a semi-active suspension for a heavy commercial vehicle based on the skyhook control strategy using TruckSim and MATLAB/Simulink, as well as a simulation model of a traditional passive suspension. The vibration reduction effects of the two suspensions are compared. The results show that compared to traditional passive suspensions, semi-active suspensions based on skyhook control strategies can effectively improve vehicle ride comfort, with a reduction of 22.9% in the root mean square value of body acceleration, a reduction of 15.1% in the root mean square value of suspension dynamic deflection, and a reduction of 9.8% in the root mean square value of tire dynamic load.

Key words: Semi-active suspension; TruckSim; Skyhook control; Ride comfort; MATLAB/Simulink

摘要： 悬架是车辆底盘系统的关键组成部分之一，对车辆平顺性有十分重要的影响。传统的 被动悬架无法根据车辆运行工况调整自身阻尼，减振效果有限，半主动悬架能够根据不同的 运行工况实时调整自身阻尼，能够有效提升车辆平顺性。文章通过 TruckSim 和 MATLAB/ Simulink 建立基于天棚控制策略的某重型商用车半主动悬架仿真模型和传统被动悬架仿真模 型，并对两种悬架的减振效果进行了对比分析，结果表明，相比传统被动悬架，基于天棚控 制策略的半主动悬架能够有效提升车辆平顺性，其中车身加速度均方根值降低 22.9%，悬架 动挠度均方根值降低 15.1%，轮胎动载荷均方根值降低 9.8%。

关键词: 半主动悬架；TruckSim；天棚控制；平顺性；MATLAB/Simulink