Patent ID: 10041202

Abstract:
A method of estimating water mass extraction in a laundry treating appliance where the geometry changes in a laundry load affect inertia estimations includes accelerating rotation of the drum during a water extraction cycle to at least two distinct speeds, each for a dwell time, by way of acceleration ramps; determining, during the accelerating rotation, by a controller communicably coupled with the motor, a torque of the motor, an acceleration of the drum, a speed of the drum, and/or an angular position of the drum; and estimating with a parameter estimator inertia values of a laundry load in the drum, based on the torque, acceleration, speed, and/or angular position of the drum at the beginning and the end of each dwell time. The estimated inertia values are transformed based on differing geometries of the laundry load, and water mass extraction is determined based on the transformed estimated inertia values.