Track tamping method and machine

摘要

In a method of tamping a track, the displacements between the two reference points relative to each other are recorded during a first advance of the track tamper along the track to form a first curve indicating an existing track position. On the basis of the first curve, correction values are formed and a second curve indicating a desired track position is computed on the basis of the correction values. The track is then repositioned to the desired track position during a second advance of the track tamper along the track in response to the correction values while the track is tamped.