Electronic parking brake system and control method thereof

The present disclosure relates to an electronic parking brake system and a control method thereof. The electronic parking brake system includes an electronic parking brake that includes an electronic parking brake actuator applied by a motor. The electronic parking brake system includes a current sensor configured to detect a current flowing in the motor. The electronic parking brake system includes a processor configured to control a parking apply operation of the electronic parking brake. The electronic parking brake system includes a memory configured to store an inrush current generated during the parking apply operation of the electronic parking brake in a no-load condition. The processor calculates an inrush current model based on the inrush current and may accurately estimate and remove the inrush current generated during the parking apply operation by modeling the inrush current when there is no external load.