Refrigerator and control method thereof

A refrigerator comprising:

• a main body including a storage compartment;
• a first door and a second door rotatably coupled to the main body and disposed in left and right directions so as to open and close the storage compartment;
• a door opening device including a first push rod configured to move so as to press a rear surface of the first door, a second push rod configured to move so as to press a rear surface of the second door, and a motor configured to allow the first push rod and the second push rod to be interlocked with each other and moved in opposite directions, and configured to be driven in a forward and reverse direction;
• a first switch configured to receive a user input for opening the first door;
• a second switch configured to receive a user input for opening the second door;
• and
• a controller configured to control the motor,
• wherein the controller is configured to:
• in response to receiving the user input from the first switch, drive the motor in a forward direction until the first push rod reaches a maximum forward position of the first push rod;
• perform at least one of stopping the motor or driving the motor in a reverse direction at a first reference driving speed before a predetermined waiting time elapses from when the first push rod reaches the maximum forward position of the first push rod;
• drive the motor in the reverse direction at a second reference driving speed until the first push rod returns to a neutral position of the first push rod after the predetermined waiting time elapses from when the first push rod reaches the maximum forward position of the first push rod;
• and
• change the predetermined waiting time from a first reference waiting time to a second reference waiting time, less than the first reference waiting time, in response to receiving the user input from the second switch while (a) the motor is driven in the forward direction until the first push rod reaches the maximum forward position of the first push rod from the neutral position of the first push rod, or (b) while the at least one of stopping the motor or driving the motor in the reverse direction at the first reference driving speed is performed before the predetermined waiting time elapses from when the first push rod reaches the maximum forward position of the first push rod.