The invention discloses a
rollover-preventing control method for a four-wheel steering automobile integrating a change of automobile speed. A
rollover-preventing
control system consists of a sensor, an ECU (
electronic control unit) and an executing mechanism. The method comprises the following steps of firstly, enabling the sensor to measure the vehicle parameters, such as the wheel rotation angle, the automobile speed and the like, sending the vehicle parameters to the ECU, and calibrating the
rollover evaluation value, wherein the rollover evaluation method is different from the traditional evaluation method, and directly utilizes the automobile speed and the rotation angle
signal collected by the sensor to calibrate the front and back wheel rotation angles and corresponding extreme automobile speeds by an F (v, gamma) function; adding a working condition judging unit, adopting different control
modes, and fully considering the intent of a driver; when the automobile speed is greater than the automobile extreme rotation angle, enabling the ECU to judge the working conditions according to the automobile speed, the wheel rotation angle, the rollover angle and the like, and adjusting the driving state of the automobile by the differential
brake and the four-wheel steering executing mechanism, so as to further change the state of the automobile, and reach the rollover-preventing effect.