Patents by Inventor Joerg Neupert

Joerg Neupert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7850024
    Abstract: A control system for a boom crane, having a tower and a boom pivotally attached to the tower, a first actuator for creating a luffing movement of the boom, a second actuator for rotating the tower, first means for determining the position rA and/or velocity {dot over (r)}A of the boom head by measurement, second means for determining the rotational angle ?D and/or the rotational velocity {dot over (?)}D of the tower by measurement, the control system controlling the first actuator and the second actuator. In the control system of the present invention the acceleration of the load in the radial direction due to a rotation of the tower is compensated by a luffing movement of the boom in dependence on the rotational velocity {dot over (?)}D of the tower determined by the second means. The present invention further comprises a boom crane having such a system.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: December 14, 2010
    Assignee: Liebherr-Werk Nenzing GmbH
    Inventors: Klaus Schneider, Oliver Sawodny, Joerg Neupert
  • Patent number: 7831333
    Abstract: The invention relates to a method for the transfer of a load hanging at a load rope of a crane or excavator comprising a slewing gear, a luffing mechanism and a hoisting gear comprising a computer-controlled regulator for the damping of the load oscillation which has a trajectory planner, a disturbance observer and a state regulator with a pre-control, wherein the working space is first fixed by selection of two points, with one of the two points being fixed as the destination point by direction presetting by means of the hand lever and with the nominal speeds for the slewing gear and the luffing mechanism being preset by the hand lever signals.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: November 9, 2010
    Assignee: Liebherr-Werk Nenzing GmbH
    Inventors: Oliver Sawodny, Alexander Hildebrandt, Joerg Neupert, Klaus Schneider
  • Publication number: 20100230370
    Abstract: The present invention represents a procedure for compensating the heave movement of offshore cranes. The dynamic model of the compensation actuator (hydraulically operated winch) and the load hanging on a rope are derived. Based on this model, a path-tracking control unit is developed. To compensate the movement of the ship/watercraft caused by waves, the heave movement is defined as a time-varying disturbance and is analyzed with respect to uncoupling conditions. With a model expansion, these conditions are satisfied, and an inversion-based uncoupling control law is formulated. To stabilize the system, an observer is used for reconstructing the unknown state by means of a force measurement. Furthermore, the compensation efficiency can be improved by predicting the heave movement. There is proposed a prediction method in which no ship/watercraft models or properties are required. The simulation and measurement results validate the heave compensation method.
    Type: Application
    Filed: May 20, 2009
    Publication date: September 16, 2010
    Inventors: Klaus Schneider, Oliver Sawodny, Joerg Neupert, Tobias Mahl, Sebastian Kuchler
  • Publication number: 20080156761
    Abstract: A control system for a boom crane, having a tower and a boom pivotally attached to the tower, a first actuator for creating a luffing movement of the boom, a second actuator for rotating the tower, first means for determining the position rA and/or velocity {dot over (r)}A of the boom head by measurement, second means for determining the rotational angle ?D and/or the rotational velocity {dot over (?)}D of the tower by measurement, the control system controlling the first actuator and the second actuator. In the control system of the present invention the acceleration of the load in the radial direction due to a rotation of the tower is compensated by a luffing movement of the boom in dependence on the rotational velocity {dot over (?)}D of the tower determined by the second means. The present invention further comprises a boom crane having such a system.
    Type: Application
    Filed: October 16, 2007
    Publication date: July 3, 2008
    Inventors: Klaus Schneider, Oliver Sawodny, Joerg Neupert
  • Publication number: 20070219662
    Abstract: The invention relates to a method for the transfer of a load hanging at a load rope of a crane or excavator comprising a slewing gear, a luffing mechanism and a hoisting gear comprising a computer-controlled regulator for the damping of the load oscillation which has a trajectory planner, a disturbance observer and a state regulator with a pre-control, wherein the working space is first fixed by selection of two points, with one of the two points being fixed as the destination point by direction presetting by means of the hand lever and with the nominal speeds for the slewing gear and the luffing mechanism being preset by the hand lever signals.
    Type: Application
    Filed: March 14, 2006
    Publication date: September 20, 2007
    Inventors: Oliver Sawodny, Alexander Hildebrandt, Joerg Neupert, Klaus Schneider