Patent ID: 8601626
Filing Date: 2013-12-10
Classification: D06F

Abstract:
1. A method of operating a washing machine, the method comprising: rotating a drum; incrementally increasing a rotational speed of the drum; detecting a vibration level at each of the incremental rotational speeds and storing the detected vibration levels; reaching a target rotational speed and detecting a corresponding vibration level at the target rotational speed; comparing the detected vibration level at the target rotational speed to a set value; if the vibration level at the target rotational speed is greater than the set value, determining whether the detected vibration level is increasing or decreasing at the target rotational speed based on the stored vibration levels and the detected vibration level at the target rotational speed; and adjusting the rotational speed of the drum depending on whether the detected vibration level is increasing or decreasing at the target rotational speed.