一种四轮汽车液压制动系统的压强控制方法及系统

The invention belongs to the technical field of hydraulic brake control, and particularly discloses a pressure control method and a pressure control system of a four-wheel automobile hydraulic brake system. The method comprises the steps of obtaining four-wheel initial target braking torque, calculating initial target pressure corresponding to the four wheels, calculating first theoretical target pressure of a four-wheel braking hydraulic cylinder, obtaining first loss pressure and braking force lost by the four wheels, calculating first compensation pressure on the same side, obtaining second theoretical target pressure of the four-wheel hydraulic cylinder which does not exceed working capacity, obtaining sum of braking forces lost by two wheels on the left side and sum of braking forces lost by two wheels on the right side, calculating residual braking force compensation capacity of the four wheels based on the second theoretical target pressure and taking maximum pressure allowed to work by the hydraulic cylinder as constraint, carrying out pressure different-side compensation on the four wheels, obtaining different-side compensation pressure of the four wheels, and calculating execution target pressure of the four-wheel hydraulic cylinder. The invention can maximally realize the braking force requirement of the whole vehicle, shorten the braking distance and improve the braking safety of the vehicle.