Unbalance detection system for a washing machine

Details Unbalance detection system for a washing machine Unbalance detection system for a washing machine

D - Textiles, Paper

06

F

D06F 37/42 (2006.01) D06F 37/20 (2006.01) D06F 39/00 (2006.01)

Patent

CA 2401325

An unbalance detection and control system senses an out-of-balance condition developed during a plaster speed portion of spin cycle in a washing machine, particularly a horizontal axis washing machine, through fluctuations in command signals sent from a main controller to maintain a spinning basket or tub of the washing machine at plaster speed. Preferably, the controller sends a pulse width modulated (PWM) signal to a drive controller which, in turn, regulates a motor used to spin the tub. A feedback loop is employed to reflect an actual operational state achieved by the spinning tub, which may warrant a change in the command signal. Excessive fluctuations in the command signals indicate a need to redistribute the load of clothes in the tub.

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