Controlling method of washing machine

Abstract

The present invention relates to a method for controlling a washing machine which is provided with a drum motion for rotating a drum having laundry introduced thereto in a preset direction by using a motor. The method includes the steps of an observing motion performed before the drum motion is preformed, and an acceleration motion performed in succession to the observing motion.

1 . A method for controlling a washing machine which is provided with a drum motion for rotating a drum having laundry introduced thereto in a preset direction by using a motor, comprising the steps of:
 an observing motion in which the drum in a stationary state is rotated up to a preset observing reference angle in a direction opposite to a direction set in the drum motion before the drum motion is preformed; and   an acceleration motion in which the drum is rotated up to a preset acceleration reference angle in a direction the same with the direction set in the drum motion in succession to the observing motion.   
     
     
         2 . The method as claimed in  claim 1 , wherein the observing reference angle is 15˜45 degrees in a rotation direction of the observing motion with reference to a lowest point of the drum. 
     
     
         3 . The method as claimed in  claim 1 , wherein the step of observing motion includes the step of measuring a maximum intensity of a current supplied to the motor during the motor rotates the drum from the stationary state up to the observing reference angle. 
     
     
         4 . The method as claimed in  claim 3 , wherein the step of acceleration motion includes the step of supplying a current with intensity the same with the maximum intensity of the current measured in the observing motion to the motor for rotating the drum. 
     
     
         5 . The method as claimed in  claim 4 , further comprising a step of an inertia motion in which the supply of the current is cut off so that the drum rotates by inertia when the drum rotates to the observing reference angle. 
     
     
         6 . The method as claimed in  claim 5 , wherein the step of inertia motion is performed until the drum stops after the current supplied to the motor is cut off. 
     
     
         7 . The method as claimed in  claim 6 , wherein the acceleration reference angle is the same with a rotation angle formed between the lowest point of the drum and an end point of the inertia motion. 
     
     
         8 . The method as claimed in  claim 5 , further comprising a step of shifting motion for shifting an intensity of the current being supplied to the motor after finish of the acceleration motion. 
     
     
         9 . The method as claimed in  claim 8 , wherein the step of shifting motion includes the step of shifting the intensity of the current being supplied to the motor from the intensity of the current being supplied in the acceleration motion to the intensity of the current for sustaining a rotation speed set in the drum motion. 
     
     
         10 . The method as claimed in  claim 8 , wherein the drum motion is performed in succession to the shifting motion, and the drum motion is a reversing-phase braking after rotating the drum to a preset motion angle at a speed at which the laundry does not move away from an inside circumferential surface of the drum. 
     
     
         11 . The method as claimed in  claim 10 , wherein the motion angle is 180 degrees in a rotation direction of the drum. 
     
     
         12 . The method as claimed in  claim 10 , wherein the motion angle is an angle between 90˜180 degrees in a rotation direction of the drum. 
     
     
         13 . The method as claimed in  claim 8 , wherein the drum motion is performed in succession to the shifting motion, and the drum motion is a rheostatic braking after rotating the drum up to the preset motion angle.