Patent attributes
Disclosed herein is an electronic brake system. The electronic brake system includes a hydraulic pressure supply apparatus generating a hydraulic pressure by moving a piston forward or backward with a rotational force of a motor, and supplying the generated hydraulic pressure to wheel cylinders provided at wheels, respectively; a wheel speed sensor detecting speed of each of the wheels; a piston position detector detecting a position of the piston; and an ECU configured to calculate a piston displacement amount with respect to a vehicle speed change amount during an ABS operation; calculate an actual stroke of the piston; estimate a position of the piston at an entry time point of a preset low speed section; estimate a moving direction remaining stroke; and determine whether to change the moving direction of the piston in advance before entering the preset low speed section.
