Method of controlling motor-driven washing machine and control system for the same
First Claim
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1. 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.
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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
5 Claims
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1. A method of controlling a motor-driven washing machine, the method comprising the steps of:
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(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 (2, 3, 4, 5)
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Specification