Balancing device for washing machine and control method thereof

The invention discloses a balancing device for a washing machine and a control method thereof, the washing machine comprises an inner barrel, the balancing device comprises a balancing ring, the balancing ring is coaxially installed on the inner barrel, and an annular cavity is formed in the balancing ring; the magnetic induction body is movably arranged in the annular cavity; and the magnetic field generation unit comprises a plurality of groups of coils, and the coils are electrified to generate a magnetic field and are used for driving the magnetic inductor to move in the annular cavity. According to the washing machine, the coil is powered on, the magnetic field with the magnetic field vector change is provided, the magnetic induction body is driven to move in the annular cavity, in the rotating process of the inner barrel, eccentricity generated by rotation of the inner barrel can be rapidly and accurately balanced, the clothes dewatering effect is enhanced, noise generated by vibration of the washing ma