An electric car vehicle stability control system

The present invention discloses an electric vehicle vehicle stability control system using hierarchical control structure, the upper controller is to achieve the target yaw stability control, the need to calculate the value of the vehicle yaw moment required during movement, signals provided by the sensors needed, these signals can be calculated desired yaw moment value, and compared with the actual value. Control target controller is to ensure that the lower yaw moment command issued by an upper controller by a braking force distribution is achieved, the lower the torque distribution controller controls the motor and the wheel slip ratio, so that the yaw moment of the vehicle to obtain the desired car can stably travel.