A laundry machine includes a tub, a drum that is rotatably mounted in the tub, and an induction heater that is provided in the tub and configured to heat an outer circumferential surface of the drum. The laundry machine also includes a motor that is configured to rotate the drum, a user interface comprising a course selection unit that is configured to allow a user to select a course, and an option selection unit that is configured to allow the user to select option information that is related with the course selected. The laundry machine further includes a processor that is configured to control the drum rotation speed and the induction heater. The course selection unit comprises a wash-drying course that performs heat-spinning by default, the heat-spinning being configured to heat the drum by driving the induction heater when the drum rotates.

A method of controlling a washing machine includes starting driving of a motor for rotating a drum and increasing a rotation speed of the motor to a first rotation speed, increasing the rotation speed of the motor from the first rotation speed to a second rotation speed, after the rotation speed of the motor have increased to the first rotation speed, and determining whether bubbles have been generated in the drum while the rotation speed of the motor increases to the second rotation speed. A difference between the second rotation speed and the first rotation speed is greater than the first rotation speed.

A method of controlling a washing machine includes starting driving of a motor for rotating a drum and increasing a rotation speed of the motor to a first rotation speed, increasing the rotation speed of the motor from the first rotation speed to a second rotation speed, after the rotation speed of the motor have increased to the first rotation speed, and determining whether bubbles have been generated in the drum while the rotation speed of the motor increases to the second rotation speed. A difference between the second rotation speed and the first rotation speed is greater than the first rotation speed.

A washing machine include: a case; a tub; a drum; a vibration sensor provided in the tub and configured to output a factor of a current vibration result for sensing a vibration value of the tub; a motor configured to drive the drum to process laundry; a motor control module configured to control a drum RPM to reflect a request RPM by controlling a current value of the motor and output a current vibration inducing factor; an AI module configured to receive inputs of the current vibration result factor and the vibration inducing factor and output a compensating variable for proactively deal with a future vibration result that is expected based on a current laundry distribution state, corresponding to a current laundry distribution state; and a processor configured to perform a dry-spin cycle through centrifugal power of the drum by compensating the request RPM by reflecting the compensating variable.

A washing machine include: a case; a tub; a drum; a vibration sensor provided in the tub and configured to output a factor of a current vibration result for sensing a vibration value of the tub; a motor configured to drive the drum to process laundry; a motor control module configured to control a drum RPM to reflect a request RPM by controlling a current value of the motor and output a current vibration inducing factor; an AI module configured to receive inputs of the current vibration result factor and the vibration inducing factor and output a compensating variable for proactively deal with a future vibration result that is expected based on a current laundry distribution state, corresponding to a current laundry distribution state; and a processor configured to perform a dry-spin cycle through centrifugal power of the drum by compensating the request RPM by reflecting the compensating variable.

Disclosed is a method of controlling a washing machine configured such that a drum having on a front surface thereof an inlet through which laundry is put is rotatably provided in a tub containing water. The control method includes (a) a step of supplying water to submerge at least a portion of the drum in the tub; (b) a step of performing at least once an operation in which the water contained in the tub is heated by operating a heater and the drum is rotated at a first set speed; (c) a step of draining the tub; (d) a step of supplying water to submerge at least a portion of the drum in the tub; and (e) a step of performing at least once an operation in which the water contained in the tub is heated by operating the heater and the drum is rotated. The step (e) includes a step of rotating at least once the drum at a second set speed which is lower than the first set speed; and a step of repeating a first drum cleaning operation in which the drum is rotated at least once at a third set speed lower than the second set speed, and a second drum cleaning operation in which the drum is rotated at least once at a fourth set speed lower than the third set speed.

Disclosed is a method of controlling a washing machine configured such that a drum having on a front surface thereof an inlet through which laundry is put is rotatably provided in a tub containing water. The control method includes (a) a step of supplying water to submerge at least a portion of the drum in the tub; (b) a step of performing at least once an operation in which the water contained in the tub is heated by operating a heater and the drum is rotated at a first set speed; (c) a step of draining the tub; (d) a step of supplying water to submerge at least a portion of the drum in the tub; and (e) a step of performing at least once an operation in which the water contained in the tub is heated by operating the heater and the drum is rotated. The step (e) includes a step of rotating at least once the drum at a second set speed which is lower than the first set speed; and a step of repeating a first drum cleaning operation in which the drum is rotated at least once at a third set speed lower than the second set speed, and a second drum cleaning operation in which the drum is rotated at least once at a fourth set speed lower than the third set speed.

A control method of a washing machine including a drum rotated about a horizontal rotation axis in a tub and a plurality of nozzles spraying water discharged from the tub and circulated by a pump into the drum, includes (a) step of performing a first drum operation of supplying water by a first set amount together with a detergent into the tub and rotating the drum at a first drum rotation speed, while water is supplied, at least once and operating the pump at a first pump rotation speed at least once during the first drum operation; (b) step of performing a second drum operation of operating a heater to heat the water in the tub in a state in which the first set amount of water is supplied into the tub, rotating the drum at a first drum rotation speed at least once during the operation of the heater, and operating the pump at the first pump rotation speed at least once during the second drum operation; (c) step of rotating the drum at a preset spin-drying speed to spin-dry laundry; and (d) step of operating the drum at a second drum rotation speed greater than the first drum rotation speed, while supplying water into the tub, after the operation of spin-drying the laundry, and accelerating the pump from the second pump rotation speed to a third pump rotation speed.

A control method of a washing machine including a drum rotated about a horizontal rotation axis in a tub and a plurality of nozzles spraying water discharged from the tub and circulated by a pump into the drum, includes (a) step of performing a first drum operation of supplying water by a first set amount together with a detergent into the tub and rotating the drum at a first drum rotation speed, while water is supplied, at least once and operating the pump at a first pump rotation speed at least once during the first drum operation; (b) step of performing a second drum operation of operating a heater to heat the water in the tub in a state in which the first set amount of water is supplied into the tub, rotating the drum at a first drum rotation speed at least once during the operation of the heater, and operating the pump at the first pump rotation speed at least once during the second drum operation; (c) step of rotating the drum at a preset spin-drying speed to spin-dry laundry; and (d) step of operating the drum at a second drum rotation speed greater than the first drum rotation speed, while supplying water into the tub, after the operation of spin-drying the laundry, and accelerating the pump from the second pump rotation speed to a third pump rotation speed.

Disclosed is a washing machine that performs a washing process in response to a type of a contaminant in laundry in a 5G environment, a method for controlling a washing machine, and a server for supporting washing. The washing machine according to an embodiment of the present disclosure may include a processor, a memory operably coupled to the processor and for storing at least one code executed in the processor, and a driver for controlling rotation of an inner tub so as to perform a washing operation on laundry. The memory may store a code to, when executed by the processor, cause the processor to identify a type of a contaminant in the laundry, determine a first washing process corresponding to the type of the contaminant, and control the driver based on the first washing process.