Adaptive angle tracking control strategy for electro-hydraulic coupled steering system

Due to the characteristics of electro-hydraulic coupling steering system, there are serious nonlinear and uncertain interference in the hydraulic power assist part, which leads to poor angle tracking response speed and anti-interference ability during unmanned driving. Therefore, an adaptive control method for angle tracking of electro-hydraulic coupling steering system is proposed. First, an electro-hydraulic coupling steering system model with strict feedback is established. Then, using Lyapunov theory, the controller is designed to improve the performance and realize the angle tracking control. Finally, the effectiveness of the control method is verified by MATLAB/Simulink simulation software. The results show that the proposed control method is feasible, and the rotation angle can still track the expected value rapidly under the effect of system nonlinearity and external disturbance.