IMPULSE USED TO DETECT PERIODIC SPEED VARIATION CAUSED BY UNBALANCED LOADS IN WASHING MACHINE

摘要

Washing machine appliances and associated methods for detecting periodic speed variation caused by an imbalanced load are provided. One example method for determining whether a load of a washing machine is imbalanced includes obtaining, by the washing machine, a sensor output signal describing a speed of a motor of the washing machine. The method includes determining, by the washing machine, a plurality of edge intervals. Each edge interval describes an interval of time between edges exhibited by the sensor output signal. The method includes determining, by the washing machine, a plurality of impulse values based on the plurality of edge intervals. The method includes determining, by the washing machine, whether the load of the washing machine is imbalanced based on the plurality of impulse values. One example washing machine includes one or more processors and a non-transitory computer-readable medium storing instructions for detecting periodic speed variation caused by an imbalanced load.