| 摘要 |
An apparatus and method for determining a washing pattern of a direct drive inverter-type washing machine. The apparatus comprises a voltage converter for inputting an external alternating current (AC) voltage and rectifying and smoothing the inputted AC voltage to convert it into a drive voltage necessary to a washing mode of a washing machine, a switch for performing a switching operation in response to a motor drive control signal to transfer the drive voltage from the voltage converter to a motor so as to rotate or stop a washing tub, a voltage variation sensing device for measuring a voltage variation when the motor rotates in response to the drive voltage transferred from the switch and outputting the measured result as a voltage variation sense signal, and a microcomputer for driving the motor in a laundry amount sensing pattern at the time that laundry is put into the washing tub, judging the amount of the laundry and the amount of water supply depending on the laundry amount, judging the type of a material of the laundry in response to the voltage variation sense signal at the time that wash water is supplied to the tub, producing an optimum washing pattern appropriate to the amount and material type of the laundry within the washing tub and generating the motor drive control signal to drive the motor in the produced optimum washing pattern.
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