Method for controlling clothes stirring of washing machine

Abstract

The invention discloses a method for controlling clothes stirring of a washing machine. When a control system controls a motor to begin to run according to a selected washing mode, a motor rotating speed detection device detects the rotating speed of the motor in a real-time mode. The control system further controls the motor according to one or two preset conditions that in any rotating speed ascending stage of the motor stirring motion, when the motor rotating speed detection device detects that the rotating speed of the motor ascends to the preset rotating speed ns, the control system controls the motor to run for delta ts seconds under the state that the rotating speed is not less than the rotating speed ns, and then the motor enters the rotating speed descending stage; in any rotating speed descending stage of the stirring motion, when the motor rotating speed detection device detects the rotating speed of the motor descends to the preset rotating speed nx, the control system begins to keep time for delta tx seconds, and the control system begins to execute the motion of the next step after the preset delta tx seconds are reached. According to the control method, when the number of washed clothes is large, the washing effect of the clothes is ensured, and when the number of the washed clothes is small, electric energy can be saved.

Description

technical field [0001] The invention relates to a control method of a washing machine, in particular to a method for controlling the washing machine to stir clothes. Background technique [0002] Whether the existing washing machine is a pulsator type or a drum type, its working principle is to drive the pulsator by the motor or alternately rotate the drum to promote the dissolution and infiltration of detergent, increase the impact of the water flow on the clothes, and then wash the clothes. The frequency control method is to fix the forward and reverse rotation time of the motor, and there is a pause time when the forward and reverse rotation alternates. In actual use, due to inertia, it takes time for the motor to reach the highest set speed from zero speed, and it also takes a certain amount of time to drop from the highest speed to zero. The weight is different, which will cause poor washing effect or a certain waste of electricity. [0003] like Figure 4 , is a corr...

AI Technical Summary

Problems solved by technology

However, it can be seen from the figure that the time consumption of an ON-OFF stage is △T 1 +△T 2 After the signal driving the motor stops, the motor has not stopped rotating when the motor signal stops timing due to the small rotation resistance of the pulsator. At this time, the existing washing machine control system will immediately control the motor to enter the reverse state, which will cause power loss. Great waste

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