一种新型动力吸振式轮边驱动系统仿真分析

Simulation and Analysis of Novel Wheel Drive System with Dynamic Damper

摘要:

针对一种基于电机摆动式动力吸振原理的新型轮边驱动系统，推导其振动力学微分方程，在MATLAB与ADAMS仿真软件中建立三自由度振动模型，进行车身加速度和车轮动载功率谱密度的仿真分析,验证了理论公式及仿真模型的准确性；并以车身加速度与车轮动载为指标，将该系统与一般轮毂电机驱动系统对比研究其改善车辆平顺性和车轮接地性的效果.结果表明，这种新型轮边驱动系统可有效降低车身加速度和车轮动载，从而显著改善车辆平顺性和车轮接地性.

Abstract:

Vibration differential equation of a novel wheel drive system with a swing motor as dynamic damper was deduced, its three degree of freedom (DOF) vibration model was established both in MATLAB and ADAMS software, then body acceleration and wheel dynamic load power spectrum density (PSD) were simulated and analyzed, and accuracies of theoretical equation and simulation model were verified. Then its effect on improving vehicle comfort and wheel ground adhesion were compared with normal In wheel drive system (IWD) based on body acceleration and wheel dynamic load power spectrum density. The results show body acceleration and wheel dynamic load power spectrum density of this novel wheel drive system are lower, and vehicle ride comfort and ground wheel adhesion are improved apparently.