A method and a system for control of a displacement device for a fifth wheel coupling which coupling is disposed on a tractor vehicle are described, wherein the displacement device has a lower structure having at least one guide rail oriented in the direction of travel, a movable carriage which supports the fifth wheel coupling and engages the guide rail(s), and a control device connected to a motorized drive unit for displacing the carriage and also connected to an adjusting member for fixing the carriage with respect to the guide rail(s). The underlying problem of the invention was to devise a method and a control system whereby timely establishment of a sufficiently long gap between the tractor and the associated semi-trailer is possible. One means by which this problem is solved is with a method wherein distance measurement is carried out to detect an obstacle disposed ahead of the tractor, and the measurement signal is processed in the control device to yield a control signal, which is employed to actuate the motorized drive unit and/or the adjusting member.
展开▼
