Washing machine and control method thereof

A control method for controlling a washing machine, the washing machine including a cabinet that defines an entrance at a front surface of the cabinet configured to insert and withdraw laundry therethrough, a tub disposed inside the cabinet, a drum disposed in the tub and configured to rotate relative to the tub, a motor configured to generate driving force for rotating the drum, a vibration sensor configured to sense vibration of the tub, and a controller configured to control one or more operating modes for washing of laundry, the control method comprising:

• performing a tumble motion mode in which the drum is rotated at a preset rotational speed to rinse laundry received in the drum;
• determining a stabilization time point at which a variation of a rotational speed of the motor is within a predetermined range;
• acquiring, by the controller, vibration data sensed by the vibration sensor after the stabilization time point;
• measuring a weight of laundry received in the drum, and determining a cloth amount level that is defined based on a range of the weight of laundry;
• and
• determining a volume of laundry received in the drum based on the cloth amount level and the vibration data.