CONTROL METHOD OF DIRECT PRIVE TYPE OSCILLATING BASKET WASHING MACHINE

摘要

The present invention relates to a washing control method of a direct drive oscillating basket washing machine, and the mechanical vibration shock occurs due to the rapid rise of the current at a time when the actual rotation direction and the driving direction of the motor are reversed during the conventional washing and driving. In consideration of the fact that the life of the motor is shortened, the present invention provides a first step of determining whether the driving direction of the actual motor is the same as the driving direction before starting the driving during the forward and reverse driving, and the driving direction of the actual motor in the first step If the direction is different, the second step of PWM modulation of the upper and lower gate driving signals to suppress the sudden current rise, the third step of determining the first and second PWM duty by detecting the initial RPM, the motor driving A fourth step of raising the PWM duty from the first PWM duty to the first slope until the rotation direction and the driving direction are the same; When the direction is the same, the gate output signal is changed so that only one of the upper and lower sides is PWM-modulated, and the fifth step of raising and maintaining the PWM duty from the second PWM duty to the target duty by the second tilt is detected. 6 steps to reduce the PWM duty to 0 as the second slope, and 7 steps to turn off the motor to control the mechanical vibration shock caused by the rapid current rise during washing and driving can extend the life of the washing machine It is.