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为研究不同模型和不同空气弹簧物理参数下车辆振动特性,基于热力模型和ADAMS空气弹簧非线性模型建立空气弹簧悬挂系统控制模型,并利用多体动力学仿真软件SIMPACK与MATLAB/SIMULINK联合仿真平台建立包括空气弹簧系统的整车多体动力学模型。研究结果表明:热力模型较ADAMS模型更能准确模拟空气弹簧非线性动态特性;车辆低速运行时节流孔直径越小越有利于改善车辆垂向运行平稳性;车辆高速运行时节流孔直径太大或者太小都不利于改善车辆垂向运行平稳性;附加空气室体积越大越有利于改善车辆垂向平稳性,但是增大到一定程度继续增大对车辆垂向平稳性改善不是很明显。
In order to study the vehicle vibration characteristics under different models and different air spring physical parameters, the air spring suspension system control model is established based on the thermal model and the ADAMS air spring nonlinear model, and the multi-body dynamics simulation software SIMPACK and MATLAB / SIMULINK co-simulation platform are established Multi-body dynamic model of vehicle including air spring system. The results show that the thermal model can more accurately simulate the nonlinear dynamic characteristics of air spring than the ADAMS model. The smaller the diameter of the throttle orifice is, the better the vertical running stability of the vehicle is. The larger the throttle diameter is or the larger the vehicle speed is Too small is not conducive to improving the vehicle’s vertical running stability; the larger the additional air chamber volume is more conducive to improving the vehicle vertical stability, but increased to some extent continue to increase the vehicle vertical stability is not obvious improvement.