Patent ID: 7314118

Claim:
Equipment for reducing vibrations of a lift cage guided at rails), comprising: a plurality of guide elements for guiding the lift cage along the rails; a sensor for detecting positional changes of the lift cage and/or accelerations occurring at the lift cage; an actuator arranged between the lift cage and the guide elements; and a regulating device for controlling the actuator for changing the position of the cage relative to the rails on a basis of values transmitted from the sensor, the regulating device comprising a regulator for producing an output signal for controlling the actuator on the basis of values transmitted from the sensor, a limiter unit for limiting the output signal issued by the regulator to a maximum value and producing a setting signal to be issued by the regulating device, and a feedback branch by way of which a difference between the output signal of the regulator and a limited output signal produced by the limiter unit is fed to the regulator as a further input signal, the regulator being constructed such that the difference which is fed to the regulator remains as small as possible.