Hardware-in-the-loop test for a braking system of pressure individual regulation

To improve the integration of the brake-by-wire system, a braking system, which can realize pressure individual regulation of the wheel cylinder, was developed. The parameters of the system were obtained by mathematical modeling and simulation. A prototype consisting of motor, ball screw assembly, master cylinder, sensors and other components was developed. The Hardware-in-the-loop (HIL) test rig was set up based on the co-simulation of MATLAB/Simulink and veDYNA. A fuzzy PD controller was designed and HIL test for ABS function of the prototype was carried out. Results show that the hydraulic pressure of the wheel cylinders can be individually regulated, and the single wheel cylinder pressure regulation frequency can reach 20 Hz. Limited by the performance of the motor, the system can only realize part of the ABS function.