Washing machine and control method thereof

摘要

A washing machine which improves performance of balancers, and a control method thereof. The washing machine includes a drum accommodating laundry and rotated by rotary force transmitted from a drive source, balancer housings mounted on the drum, each of the balancer housings including a disc-shaped channel formed therein, balancing modules movably disposed in the channels of the balancer housings, vibration sensors to sense unbalance applied to the drum during rotation of the drum, position sensors to sense the positions of the balancing modules, and a controller controlling movement of the balancing modules to positions to compensate for the unbalance sensed by the vibration sensors.

主权项

1. A washing machine comprising:
a drum accommodating laundry and rotated by rotary force transmitted from a drive source; one or more balancer housings mounted on the drum, each of the balancer housings including a disc-shaped channel formed therein; one or more balancing modules movably disposed in the channels of each balancer housings; vibration sensor mounted on a tub to sense unbalance applied to the drum during rotation of the drum; a first position identification unit mounted on the drum; a first position sensor to sense the first position identification unit and to generate a reference signal to determine a position of the unbalance and a position of the balancing module; a second position identification unit mounted on the balancing module; a second position sensor to sense the second position identification unit; and a controller to determine a first position of the balancing module relative to the first position identification unit through a phase difference between the reference signal of the first position sensor and a sensing signal of the second position sensor, determine a second position of the balancing module to compensate for the unbalance, and control the balancing module to move to the second position.