Load unbalanced prediction method and apparatus in an appliance
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United States of America Patent
Stats
-
Apr 6, 2004
Grant Date -
Mar 28, 2002
app pub date -
Jun 20, 2001
filing date -
Jun 26, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for predicting load unbalance in an appliance is provided for an appliance having a vessel configured to receive a supply of material and rotatable about an axis. A control is arranged and configured to rapidly accelerate a rotation of the vessel, determine an amount of energy with which the vessel has engaged the relatively stationary part, compare the amount of energy with a predetermined value and send a signal indicative of an unbalance condition if the amount of energy exceeds the predetermined value. The vessel may be rotated by use of an electric motor such as a controlled induction motor and the control can be used to measure the electric current drawn by the motor and through manipulation of the current, determine the amount of energy with which the vessel engages the stationary part of the appliance.
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