Research on Estimation and Precise Control of Wheel Cylinder Pressure for Integrated Electronic Hydraulic Brake System

This paper proposes a wheel cylinder pressure estimation and precise control strategy for an integrated electronic hydraulic brake system. Based on the Bernoulli equation and the P-V characteristics of the wheel cylinder, the estimated wheel cylinder pressure can be obtained. The wheel cylinder pressure control algorithm adjusts the pressure according to the relationship between the difference between the target wheel cylinder pressure and the estimated wheel cylinder pressure and the set threshold. To improve the robustness of the control algorithm, RBF-PID is used to design the solenoid valve controller. Finally, it was verified by MATLAB/Simulink and AMESim co-simulation. The test results show that the pressure estimation error and the steady-state control error are within 1bar and 1.8bar, respectively, which verifies the effectiveness of the strategy.