Patent ID: 7757323
Filing Date: 2010-07-20
Classification: D06F

Abstract:
1. An agitation profile for a stroke of a washing apparatus mounted within a basket of a washing machine, the agitation profile comprising: providing a motor having a first pulley for driving the washing apparatus; providing a rotatable shaft having first and second ends, the first end directly coupled to the washing apparatus; providing a second pulley mounted on the second end; coupling the first pulley to the second pulley by a drive belt; operatively coupling an inverter to the motor; operatively coupling a controller to the inverter and to the motor, the controller configured to control the motor based on a predetermined agitation profile that is adaptive to a load on the motor, the predetermined agitation profile having a predetermined target angular speed and a predetermined dwell time for the washing apparatus, and the motor configured to decelerate the agitator if the agitator is unable to reach the predetermined target angular speed after the predetermined dwell time is reached; starting the washing apparatus at an angular speed of zero; accelerating the washing apparatus at a predetermined acceleration profile to the predetermined target angular speed; holding the washing apparatus at the predetermined target angular speed for the predetermined dwell time; and decelerating the washing apparatus to an angular speed of zero after the predetermined dwell time is reached.