Electrolux Home Products Corporation N.v.

Jose Machado

Fabio Altinier

Marco Giovagnoni

Stefano Galassi

Daniel Kaminski De Souza

Alvaro Volpato

There is described a control system () for controlling unbalance of the wash assembly () in a vertical-rotation-axis washing machine (), wherein a wash assembly () is housed inside a casing (), and has a wash drum () rotating about an axis of rotation (R) substantially parallel to a vertical reference axis (V), and an electric drive unit () for rotating the wash drum () about the relative axis of rotation (R); said control system has first computing blocks () for determining a number of operating quantities (Cm(t), J, alpha (t)) associated with rotation of the wash drum (), and for determining, as a function of the quantities, the time pattern of the amplitude (h(t)) of vertical oscillation of the centre of mass (B) of the wash assembly () in a first direction substantially parallel to the vertical reference axis (V); and a second computing block () for determining the maximum amplitude (H) of vertical oscillation of the wash assembly () within a given time interval (T); the second computing block () also determines whether the maximum amplitude (H) of vertical oscillation satisfies a predetermined relationship with a predetermined threshold (SA), and determines a critical unbalanced condition of the wash assembly () when the predetermined relationship is satisfied.

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Guabirotuba, Brazil

Jose Machado