Laundry weight sensing method
First Claim
Patent Images
1. A laundry weight sensing method comprising:
- performing an operation to drive a motor to drive a pulsator in an initial stoppage state up to a maximum rate of rotation, to turn off the motor so as to inertially rotate the motor, to drive the motor again before a rate of rotation of the motor reaches 0, and to turn off the motor again before the rate of rotation of the motor reaches a maximum rate of rotation so as to inertially rotate the motor until the motor is stopped,wherein laundry weight is sensed using counter electromotive force generated when the motor is turned off again.
1 Assignment
0 Petitions
Accused Products
Abstract
A laundry weight sensing method. A motor is consecutively turned on and off plural times, the number of pulses output from a counter electromotive force detector according to counter electromotive force of the motor when the motor is finally turned off is counted, and a laundry weight is sensed using the counted number of pulses.
-
Citations
17 Claims
-
1. A laundry weight sensing method comprising:
-
performing an operation to drive a motor to drive a pulsator in an initial stoppage state up to a maximum rate of rotation, to turn off the motor so as to inertially rotate the motor, to drive the motor again before a rate of rotation of the motor reaches 0, and to turn off the motor again before the rate of rotation of the motor reaches a maximum rate of rotation so as to inertially rotate the motor until the motor is stopped, wherein laundry weight is sensed using counter electromotive force generated when the motor is turned off again. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A laundry weight sensing method comprising:
-
performing an operation to drive a motor to rotate a pulsator in an initial stoppage state up to a maximum rate of rotation and to repeatedly turn on and off the motor plural times while maintaining a rate of rotation of the motor within a predetermined range; and sensing laundry weight using counter electromotive force generated by the motor when the motor is finally turned off. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A laundry weight sensing method comprising:
-
(a) controlling a motor to turn on to drive a pulsator in to rotate in one direction for a first motor control period; (b) controlling the motor to turn off for a second motor control period; (c) controlling the motor to turn on for a third motor control period; (d) controlling the motor to finally turn off; and (e) counting the pulses of the motor indicating counter electromotive force current when the motor is finally turned off, wherein laundry weight corresponds to the counter electromotive force current. - View Dependent Claims (17)
-
Specification