【摘要】 建立了考虑侧风作用的汽车三自由度非线性动力学模型,应用基于BP神经网络的模型,参考自适应控制方法设计了主动四轮转向控制系统,并对非线性汽车模型进行了控制仿真.仿真结果表明,主动四轮转向系统能够有效的减小侧风对高速行驶汽车运动状态的影响,提高侧风稳定性.更多还原

【Abstract】 The stability of high-speed vehicle under side wind is directly connected with the safety of vehicle and passengers.In order to analyze the impact of side wind upon vehicle,A 3-DOF nonlinear vehicle dynamic model considering side wind was established.A Model Reference Adaptive Control(MRAC) method based on BP Neural Network(NN) was applied to active 4WS,which was used to control the front wheel and rear wheel steering angle,then the controlled vehicle should follow the reference model.Simulation results showed that the active 4WS could effectively improve vehicle dynamic response performance and enhance vehicle stability under side wind.更多还原