A washing machine includes a water tub arranged in a case and a damper installed between the case and the water tub for damping vibrations of the water tub. The damper includes a plunger having one end supported on the case; a rod having one end supported on the water tub and the other end movably inserted to the plunger; a housing arranged to wrap around some of the plunger and the rod and including a friction member arranged between the housing and the plunger to contact an outer circumferential surface of the plunger; and a switching device configured to be in a first state in which the rod is coupled to the housing and able to move within the plunger along with the housing and a second state in which the rod is decoupled from the housing and able to move solely within the plunger.

A clothing treatment apparatus includes a plurality of inverters for controlling the motors of a drum, a compressor, and a blowing fan, a converter for converting input power input from an external source and outputting the converted power to the inverters, and a control unit for controlling the plurality of inverters and the converter.

The present invention relates to a method for controlling a laundry machine, comprising a cloth sensing step of sensing the cloth of laundry, wherein the cloth sensing step comprises: a weight sensing step of sensing the weight of the laundry; a photographing step of photographing the inside of a drum; a volume sensing step of sensing the volume of the laundry inside the drum by mean of the captured image; and a density calculation step of calculating the density of the laundry on the basis of the sensed volume and weight.

A washer includes a drum, a motor connected to the drum, a motor drive connected to the motor and configured to supply a driving current to the motor to rotate the drum, and a processor connected to the motor drive. The processor is configured to control the motor drive to supply the driving current to the motor to rotate the motor at a target speed and to determine a magnitude of a load accommodated in the drum while controlling a rotational speed of the motor within a predetermined range.

A motor system can include a motor configured to be operated according to at least a portion of an operation cycle specifying at least one target speed for the motor and a controller configured to obtain an estimated winding resistance of the motor, wherein the estimated winding resistance is determined based at least in part on an estimator gain factor, and wherein the estimator gain factor is inversely dependent on a speed of the motor; wherein the at least one target speed comprises at least one low speed such that at least a portion of the operation cycle is a low speed portion of the operation cycle, the at least one low speed having a speed of less than about 10 percent of a maximum speed of the operation cycle.

A washing machine includes a drum, a drum motor coupled to the drum; a driving circuit and a processor. The driving circuit is configured to supply a driving current to the drum motor so that the drum motor rotates. The processor is configured to control the driving circuit to accelerate the drum motor from the first rotational speed to a second rotational speed based on a gradient of the fluctuating magnitude of the driving current supplied to the drum motor while controlling the driving circuit to rotate the drum motor at a first rotational speed.

The present disclosure relates to an artificial intelligence (AI) dryer. The AI dryer according to an embodiment of the present disclosure includes: a casing; a washing tub disposed in the casing; a motor configured to rotate the washing tub; a driver configured to drive the motor and including an output current detector for detecting an output current flowing through the motor; a heat supplier configured to supply heat to the washing tub; and a controller configured to control the driver, wherein the controller performs learning using DNN based on the output current detected by the output current detector, determines a load of laundry in the washing tub by the learning, and determines operation course information based on information of load of the laundry, thereby providing optimal operation course information corresponding to the information of load of the laundry.

A method for detecting entrapment of an article between a laundry machine door and bellows, comprising: identifying a maximum startup motor torque value of the drum motor while accelerating the drum from a stop to a target rotation speed; identifying a maximum operating motor torque value while rotating the drum at the target rotation speed; comparing a difference between the maximum startup motor torque value and the maximum operating motor torque value to a predetermined torque difference value; and terminating operation if the difference exceeds the predetermined torque difference value. A laundry washing machine configured to perform the method is also provided.

A method for detecting entrapment of an article within a laundry washing machine. The method includes rotating the drum to a target rotation speed, determining a respective drum motor torque value for each rotation, determining a distribution characteristic value of the drum motor torque values, comparing the distribution characteristic value to a predetermined threshold value, performing a correction operation to address an entrapment condition upon determining that the distribution characteristic value is above the predetermined threshold value, and proceeding with the laundry washing cycle upon determining that the distribution characteristic value is below the predetermined threshold value.

A washing machine and a method of controlling the same are disclosed. The amount of laundry that is introduced into the washing machine is measured using gravity and inertia applied during the operation of the motor, whereby it is possible to precisely calculate the amount of laundry and to minimize the effects of the initial position of the laundry and the movement of the laundry. In addition, the current value of the motor that is operated is used to measure the amount of laundry without a sensor. Furthermore, the amount of laundry is measured at the rotational speed of the motor at which the laundry clings to the drum, whereby it is possible to minimize an error due to the movement of the laundry to thus improve accuracy. Moreover, it is possible to determine the amount of laundry within a short time. Consequently, it is easy to commence the spin-drying operation, thereby reducing washing time and saving energy.