Abstract: Disclosed are an electronic parking brake system and a control method thereof. The electronic parking brake system according to an embodiment of the present disclosure which comprises an EPB (Electronic Parking Brake) actuator operated by an electric motor, comprises a motor driving unit for driving the electric motor of the EPB actuator, a current sensing unit for sensing a current flowing in the electric motor, and an electronic control unit for accumulating an electric charge amount put into the electric motor from the time when a motor current change rate is higher than a preset change rate if the motor current change rate according to the motor current sensed through the current sensing unit during a parking operation is higher than the preset change rate and determining a stuck failure of the electric motor based on the accumulated electric charge amount.

Abstract: Disclosed are an electronic parking brake system and a control method thereof. The electronic parking brake system according to an embodiment of the present disclosure which comprises an EPB (Electronic Parking Brake) actuator operated by an electric motor, comprises a motor driving unit for driving the electric motor of the EPB actuator, a current sensing unit for sensing a current flowing in the electric motor, and an electronic control unit for accumulating an electric charge amount put into the electric motor from the time when a motor current change rate is higher than a preset change rate if the motor current change rate according to the motor current sensed through the current sensing unit during a parking operation is higher than the preset change rate and determining a stuck failure of the electric motor based on the accumulated electric charge amount.

Abstract: Disclosed herein are an electronic parking brake (EPB) system and a method of controlling the same. The EPB system including an EPB actuator which has a motor and provides disc brakes provided in wheels with parking brake power includes a parking switch configured to be turned on or off by a driver, a current detector configured to detect a motor current flowing through the motor of the EPB actuator, a motor driving unit configured to drive the motor of the EPB actuator, and an electronic control unit which applies a parking brake in which the motor of the EPB actuator is rotated by the motor driving unit in one direction to provide the disc brakes with the parking brake power when the parking switch is turned on, calculates an impedance of the motor when a motor current value detected by the current detector is higher than a preset value while applying the parking brake, and determines whether a motor stuck failure occurs based on the calculated impedance of the motor.

Abstract: Disclosed herein are an electronic parking brake (EPB) system and a method of controlling the same. The EPB system including an EPB actuator which has a motor and provides disc brakes provided in wheels with parking brake power includes a parking switch configured to be turned on or off by a driver, a current detector configured to detect a motor current flowing through the motor of the EPB actuator, a motor driving unit configured to drive the motor of the EPB actuator, and an electronic control unit which applies a parking brake in which the motor of the EPB actuator is rotated by the motor driving unit in one direction to provide the disc brakes with the parking brake power when the parking switch is turned on, calculates an impedance of the motor when a motor current value detected by the current detector is higher than a preset value while applying the parking brake, and determines whether a motor stuck failure occurs based on the calculated impedance of the motor.