Control method of the rotational speed of the drum of a centrifuging machine as function of imbalance and machine for the use of this method.

摘要

The machine being equipped with an alternating-current motor (2) for driving said drum (1) and with a device (3, 4, 5) for controlling the speed of said motor (2) by adjusting the angle of passage of the current (I) passing through it, the amplitude of the variations (Tm, TM) of said angle of passage of the current over at least one revolution of the drum (1) is determined as a quantity representing the unbalance. <IMAGE>