Electronic brake system and control method therefor

An electronic brake system comprising:

• a hydraulic pressure supply device including a motor, and configured to generate a hydraulic pressure by rotating the motor to move a piston in a first direction or a second direction;
• a hydraulic circuit configured to guide the hydraulic pressure generated by the hydraulic pressure supply device to a wheel cylinder;
• a motor position sensor configured to detect a rotation of the motor;
• and
• a controller configured to, if an operation mode is a high-pressure mode, determine whether a predetermined target pressure is securable based on a position of the piston, determine a moving direction of the piston for transferring a hydraulic pressure to the wheel cylinder based on whether the predetermined target pressure is securable, and control the hydraulic pressure supply device to move the piston in the determined moving direction.

A method of controlling an electronic brake system, the method comprising:

• generating a hydraulic pressure by rotating a motor to move a piston in a first direction or a second direction;
• detecting rotation of the motor;
• detecting the generated hydraulic pressure;
• identifying a position of the piston based on the rotation of the motor;
• if the detected hydraulic pressure is greater than or equal to a reference pressure, identifying whether a target pressure is securable based on the position of the piston;
• and
• changing a moving direction of the piston based on whether the predetermined target pressure is securable.