Patent ID: 9145634
Filing Date: 2015-09-29
Classification: D06F

Abstract:
1. A method of operating a laundry treating appliance having a chassis, a tub, a rotatable drum positioned within the tub, and a suspension system mounting the tub to the chassis, with the rotatable drum at least partially defining a treating chamber for receiving laundry for treatment according to an automatic cycle of operation, and the tub, drum, and any laundry in the treating chamber forming a suspended mass in combination with the suspension system, the method comprising: accelerating a rotational speed of the drum through a resonance speed zone of the suspended mass where an unacceptable imbalance of laundry in the drum will present as the suspended mass contacting a portion of the chassis to define a “hit”; monitoring movements of the chassis during the accelerating; identifying when the monitored movements satisfy a predetermined threshold, indicative of a hit, for two sequential time segments, which correspond to a rotational frequency of the drum during the resonance speed zone, to identify a double hit; and ceasing the accelerating of the drum upon the identification of a double hit.