中文摘要：

为提高低附着系数路面下的车辆操纵稳定性,基于拟合变传动比曲线,采用模糊推理方法,设计了自适应改进型变传动比曲线,把可变传动比功能拓展至稳定性控制层面。在MATLAB/Simulink中的仿真分析验证了所设计的改进型变传动比曲线的有效性。当在线估算的路面附着系数减小时,车辆系统的增益也相应减小,从而使车辆理想横摆角速度响应也减小,提高了车辆在低附着路面行驶时的稳定性和安全性。

英文摘要：

Based on the fitting variable steering ratio curve,an adaptive modified variable steering ratio curve was proposed to enhance the stability on low friction coefficient roads.Simulations in MATLAB/Simulink show the effectiveness of proposed modified variable steering ratio curve.Specifically,when online estimated friction coefficient decreases,vehicle target yaw rate decreases accordingly,thereby improving driving stability and safety on slippery roads.