提高车辆主动安全性的模型参考变结构控制方法

基于李亚普诺夫函数设计了模型参考变结构控制器,该控制器通过产生主动横摆力矩迫使车辆的响应跟踪参考模型的理想输出,从而提高了车辆的主动安全性.用该控制模型计算了车辆在正弦输入和阶跃输入时的横摆角速度以及车辆质心的侧偏角响应,仿真计算结果表明控制车辆的横摆力矩能够有效改善车辆的横摆角速度、质心侧偏角响应,并且该控制器能更好的适应车速和路况的变化,鲁棒性强.

Model Reference Variable Structure Control for Improving Vehicle Active Safety

A model reference variable structure controller based on Lyapunov function was designed to generate additional yaw moment of the vehicle for improving active safety.This controller was expected to make the actual vehicle response tracking the reference model.The proposed simulation model was employed to calculate the yaw rate and slip angle response characteristics of a vehicle under sine steering angle and J-turn input.It shows that the handling and stability of the vehicle is significantly improved as compared to the uncontrolled one.The control strategy is robust to vehicle speed and road condition variations,and uncertainties.