路面激励下汽车传动系统的随机扭转振动分析

Random torsional vibration of automobile power train under excitation of road surface

为了分析由路面激励引起的汽车传动系统的随机扭转振动响应情况,建立了传动系统随机扭转振动的计算模型,提出了对实验结果进行拟合的参数识别方法。通过数值处理和实验手段确定了模型的主要参数,计算和分析了由随机路面激励所引起的传动系统的动力学响应。通过某汽车的道路实验验证了上述理论分析和计算方法的正确性。结果表明,汽车传动系统的低频扭转振动主要由不平路面输入激励所引起。

In order to study the low-frequency torsional vibration response of a driveline excited by the road,surface roughness,a numerical model to study the dynamic behaviour of the automobile power train was set up.The parameter identification method by experimental data fitting was proposed,and the key parameters were determined by data processing and experimental methods.The automobile power train dynamic response to the rough road surface was calculated and analysed.Furthermore,an experiment of vehicle drivelin...