Lg Electronics Inc.

Kweon Son

Yang Hwan No

Jong Ho Kim

In Haeng Cho

Bon Kwon Koo

Jong Chul Bang

Jae Cheol Lyu

Woon Yong Lee

Kwon Ki Hong

Min Jin Oh

Seong Sik Kim

Tae In Park

Jea-Kyum Kim

Ho-Cheol Kwon

Kang-Mo Choi

Jong-A Park

Hyo Sik Choi

Jung Hoon Ducksan 1-Cha Apt Kang

A control system for a motor-driven washing machine. The control system includes an electrical motor; a driving unit that applies an input voltage to the motor to drive the motor; a voltmeter that measures a reverse voltage generated by the motor for each predetermined period; and a microprocessor reducing a speed of the motor if the measured reverse voltage is less than or equal to a predetermined voltage level.

Method of controlling motor-driven washing machine and control system for the same

A method of controlling a motor-driven washing machine. The method includes increasing a speed of a motor from zero to a first predetermined speed W. Reducing the motor speed from Wto a second predetermined speed Wand measuring the deceleration period. Increasing the motor speed from Wto a third predetermined speed Wand braking the motor according to a slow brake logic if a first interruption of the motor is ordered during the step of increasing the motor speed from Wto W. Increasing the motor speed from Wto a fourth predetermined speed Wand selecting one of plurality of rapid-brake logics on the basis of the measured deceleration period and braking the motor according to the selected rapid-brake logic if a second interruption of the motor is ordered during the step of increasing the motor speed from Wto W.

The present invention provides a washer and washing cycle control method thereof, by which a laundry amount of a laundry can be measured prior to a water supply despite a dry state of the laundry and by which the waste of power consumption and unnecessary use of water can be prevented. The present invention includes a drum holding a laundry therein, a motor rotating the drum, and a control unit executing a sub-routine for measuring a laundry amount of the laundry prior to a water supply to the drum. And, the sub-routine includes the steps of applying a ramp drive voltage to the motor during an acceleration section to measure a motor RPM amount and a drive voltage amount during the acceleration section, stopping supplying the ramp drive voltage to the motor to measure a motor RPM amount of a deceleration section, and measuring a laundry amount of the laundry using the motor RPM amount of acceleration section, the drive voltage amount of the acceleration section, and the motor RPM amount of the deceleration section.

Washer and washing cycle control method thereof

A control method of a washing machine enables the output of a plurality of melodies indicative of any one of a plurality of operational states of the washing machine. The method of controlling the washing machine includes the steps of assigning at least one audio signal according to a specific operational state of the washing machine among a plurality of operational states, monitoring the specific operational state of the washing machine, and outputting the at least one audio signal according to the specific operational state.

Washing machine with melody generating assembly

A washing machine control method includes executing a dewatering step. The method accelerates a motor to rotate a drum according to a predetermined rate in response to the dewatering execution step. The method detects if the predetermined rate exceeds a first value but is less than a second value, and whether a state of vibration exists with respect to the drum rotated according to the predetermined rate; and stops the motor if the detected state of vibration exists.

Washing machine control method and washing machine using the same

Object of the present invention lies on improving a system stability by reducing an allowable eccentricity of laundry below a preset value when a spinning speed reaches to a maximum even if a voltage higher than a rated voltage is applied, by varying a maximum limit of a lead angle with a voltage applied to a drum type washing machine. For achieving the object of the present invention, in a method for controlling a spinning speed of the present invention, a maximum value of a lead angle is set to vary with an applied voltage after detection of the applied voltage.

Method for controlling spinning speed in drum-type washing machine

Growing community of inventors

Changwon-si, South Korea

Kweon Son