基于操纵稳定性的轮胎特性匹配汽车操纵逆动力学研究

摘要

利用MATLAB/Simulink,采用非线性轮胎模型,建立考虑载荷转移的二自由度汽车模型.在此基础上,基于逆动力学原理,使用神经网络理论方法,构建汽车前后轮胎特性与操纵稳定性评价指标之间的映射关系.结果表明,通过该方法构建的网络模型可以较准确地求出满足汽车操纵稳定性要求的前后轮胎侧偏刚度组合,进而指导汽车开发过程中的轮胎选择工作.%Considering the load transfer during steer process, a vehicle dynamic model with non-liner tire model was built by MATLAB/Simulink. Based on inverse dynamics and neural network, the relationship between tire characteristics and vehicle capability was established. The conclusion shows that we can figure out which kind of compages of tires' cornering characteristic can satisfy the vehicle requirements, and this method can also be used to guide tire selection in the vehicle developing phase.