Patents by Inventor Jesper Bergsjo

Jesper Bergsjo 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: 7872436
    Abstract: An apparatus, a method and a control system for controlling an industrial robot with at least one axis of rotation and/or translation. The robot includes at least one actuator or motor at each of the axes for driving a movement of an arm of the robot and at least one sensor at each of the rotatable shafts. A dither-signal generator for generation of a periodic signal is used to provide a varying dither signal to a servo of the actuator. Automatic adaption of the dither signal is provided. A computer program for carrying out the method and a graphical user interface.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: January 18, 2011
    Assignee: ABB AB
    Inventors: Sönke Kock, Christian H Müller, Torgny Brogårdh, Jesper Bergsjö, Andreas Olevik, Stig Moberg
  • Patent number: 7630775
    Abstract: A control system for controlling one or more manipulators. One or more drives control motors driving the movements of the manipulator. An axis computer provides control signals to the drives. A main computer is adapted to execute a program with instructions for the movements and supplies the axis computer with control instructions. Physically separated modules are adapted to be placed at separated locations and to handle different functions. Each module may be surrounded by a casing of its own, may have its own power supply and has a well-defined interface in relation to the other modules. The computers and drives are arranged in the modules. One of the modules is a main computer module, which comprises the main computer. Another of the modules is a drive module, which comprises the axis computer.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: December 8, 2009
    Assignee: ABB AB
    Inventors: Henrik Ryegård, Fredrik Pahlm, Jesper Bergsjö, Peter Eriksson, Ian Bird-Radolovic
  • Publication number: 20070260356
    Abstract: An apparatus, a method and a control system for controlling an industrial robot with at least one axis of rotation and/or translation. The robot includes at least one actuator or motor at each of the axes for driving a movement of an arm of the robot and at least one sensor at each of the rotatable shafts. A dither-signal generator for generation of a periodic signal is used to provide a varying dither signal to a servo of the actuator. Automatic adaption of the dither signal is provided. A computer program for carrying out the method and a graphical user interface.
    Type: Application
    Filed: May 19, 2004
    Publication date: November 8, 2007
    Applicant: ABB AB
    Inventors: Sonke Kock, Christian Muller, Torgny Brogardh, Jesper Bergsjo, Andreas Olevik, Stig Moberg
  • Patent number: 7084595
    Abstract: Method for optimizing the movement performance of an industrial robot for a current movement path with respect to thermal load on the driving system of the robot, wherein the method comprises the following steps: for at least one component in the driving system, the thermal load is calculated for the whole or parts of the movement path if the calculated thermal load is compared with a maximally allowed load for the component; and dependent on said comparison, a course of accelerations and velocities for the current movement path are adjusted.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: August 1, 2006
    Assignee: ABB AB
    Inventors: Torgny Brogårdh, Magnus Ahlbäck, Jesper Bergsjö, Staffan Elfving, Anders Lager, Stig Moberg, Mats Myhr, Dan Rylander
  • Publication number: 20050209711
    Abstract: A control system for controlling one or more manipulators. One or more drives control motors driving the movements of the manipulator. An axis computer provides control signals to the drives. A main computer is adapted to execute a program with instructions for the movements and supplies the axis computer with control instructions. Physically separated modules are adapted to be placed at separated locations and to handle different functions. Each module may be surrounded by a casing of its own, may have its own power supply and has a well-defined interface in relation to the other modules. The computers and drives are arranged in the modules. One of the modules is a main computer module, which comprises the main computer. Another of the modules is a drive module, which comprises the axis computer.
    Type: Application
    Filed: June 5, 2003
    Publication date: September 22, 2005
    Applicant: ABB AB
    Inventors: Henrik Ryegard, Fredrik Pahlm, Jesper Bergsjo, Ian Bird-Radolovic
  • Publication number: 20040124802
    Abstract: Method for optimising the movement performance of an industrial robot for a current movement path with respect to thermal load on the driving system of the robot, wherein the method comprises the following steps: for at least one component in the driving system, the thermal load is calculated for the whole or parts of the movement path if the calculated thermal load is compared with a maximally allowed load for the component; and dependent on said comparison, a course of accelerations and velocities for the current movement path are adjusted.
    Type: Application
    Filed: January 29, 2004
    Publication date: July 1, 2004
    Inventors: Torgny Brogardh, Magnus Ahlback, Jesper Bergsjo, Staffan Elfving, Anders Lager, Stig Moberg, Mats Myhr, Dan Rylander