Aiming at the problems of the front wheel angle tracking and the vehicle stability control of the steer-by-wire vehicle,a control strategy of the vehicle lateral stability is proposed.The second-order model of SBW actuator is established,and a Raial basis function network adaptive sliding mode controller of steering actuator is designed to ensure the stability of the controller and the accuracy of the front wheel angle tracking by constructing Lyapunov function.Secondly,a sliding mode controller is designed based on the extended state observer to track the desired yaw rate and calculate the final front wheel angle to improve the vehicle stability.The simulation results of MATLAB/Simulink and CarSim show that the proposed controller improves the steering perfor-mance and driving stability of the vehicle.
关键词
线控转向系统/稳定性控制/滑模控制/径向基函数网络
Key words
Steer-by-Wire System/Stability Control/Sliding Mode Control/Radial Basis Function Network
维普
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