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US 2005/0028296 A1Published application
Spin-dry control method in washing machine
AssigneeLG Electronics Inc.
InventorsTae Lee, Byung Choi, Hyun Seo, Sang Hong, Moon Hong, Si Jeon
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Abstract
A spin-dry control method in a washing machine includes sensing a first clothes amount contained in a washing tub, sensing an unbalance of the clothes and a second clothes, after execution of the sensing the first clothes amount, determining a final clothes amount, based on the first clothes amount and the second clothes amount, and executing a main spin-dry process, based on the final clothes amount.
Claims22
A spin-dry control method in a washing machine, comprising:
- sensing a first clothes amount contained in a washing tub;
- sensing an unbalance of the clothes and a second clothes amount, after execution of the sensing of the first clothes amount;
- determining a final clothes amount, based on the first clothes amount and the second clothes amount;
- and
- executing a main spin-dry process, based on the final clothes amount.
2 more elements
A spin-dry control method in a washing machine, comprising:
- accelerating a motor, which is adapted to rotate a washing tub containing clothes to be spin-dried, after a start-up thereof such that an RPM of the motor reaches a predetermined RPM;
- constantly rotating the motor to rotate in a constant speed state for a predetermined time when the RPM of the motor has reached the predetermined RPM;
- turning off the motor after execution of the constantly rotating;
- measuring an angular velocity of the motor and a PWM duty value in a duration from a start point of the accelerating to an end point of a constant RPM stage at the constantly rotating, and a time of the duration, and measuring an RPM ripple of the motor and a PWM duty value in an RPM rippled stage at the constantly rotating;
- determining a clothes amount, using the angular velocity of the motor, the PWM duty values, and the duration time, along with an equation of motion established in association with rotation of the washing tub and clothes;
- and
- determining an unbalance index, based on the clothes amount and the RPM ripple.
4 more elements
Dependencies are inferred from the claim text.