Method of controlling motor-driven washing machine and control system for the same
1 Assignment
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Accused Products
Abstract
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.
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Citations
61 Claims
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1-50. -50. (canceled)
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51. A method of controlling a motor-driven washing machine, the method comprising the steps of:
- (a) determining whether a current DC voltage of a driving unit driving a motor is less than or equal to a predetermined voltage level for each predetermined period;
(b) measuring a current leading phase angle of the current DC voltage if the current voltage is less than or equal to the predetermined voltage level; and
(c) decreasing the current leading phase angle of the current DC voltage by a first predetermined level if the measured leading phase angle is greater than zero. - View Dependent Claims (52, 53, 54, 55)
- (a) determining whether a current DC voltage of a driving unit driving a motor is less than or equal to a predetermined voltage level for each predetermined period;
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56. A control system for a motor-driven washing machine, the control system comprising:
- 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. - View Dependent Claims (57, 58, 59, 60)
- an electrical motor;
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61-86. -86. (canceled)
Specification