Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik IPK

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  • Publication
    Robust system identification for hysteresis-controlled devices using SINDy
    ( 2020)
    Schreck, G.
    ;
    Thiele, G.
    ;
    Fey, A.
    ;
    Krüger, J.
    For advanced control of technical systems reliable system identification methods are essential. The data-driven framework Sparse Identification of Nonlinear Dynamics (SINDy) by Kutz and Brunton is extended in order to tackle hysteresis-controlled systems. In order to gain robustness, a so called proximity hysteron is introduced. This paper presents this extension and documents experiments with simulations of an academic example and an industrial chiller system. A proof of concept is followed by experiments which show that strong nonlinearities as well as inadequate sampling rates can critically impair the algorithm.
  • Publication
    Wandlung der Steuerungstechnik durch Industrie 4.0
    ( 2015)
    Chemnitz, M.
    ;
    Schreck, G.
    ;
    Krüger, J.
    Die dritte industrielle Revolution in den Siebziger- und Achtzigerjahren des 20. Jahrhunderts basierte auf der Verbindung von Maschine und Computer und legte so den Grundstein der heutigen Automatisierungstechnik in der Fabrik. Sie gipfelte im Computer Integrated Manufacturing (CIM). Aber begrenzte Rechenleistung und die Dystopie einer menschenleeren Fabrik verhinderten einen Erfolg von CIM. Industrie 4.0 hingegen steht für die Integration von Mensch, Technik und Organisation. Ihre Basis bildet die Vernetzung von Produkten, Werkzeugen und Produktionsmitteln zusammen mit der Verfügbarkeit aller relevanten Informationen. Die Kombination mit aktuellen Entwicklungen wie Cloud Computing und Big Data ermöglicht die Analyse und Verwertung dieser Informationen.
  • Publication
    Advanced methods for small batch robotic machining of hard material
    ( 2012)
    Krüger, J.
    ;
    Schreck, G.
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    Surdilovic, D.
    ;
    Zhao, H.
  • Publication
    PISA: Next generation of flexible assembly systems - from initial ideas to industrial prototypes
    ( 2010)
    Krüger, J.
    ;
    Katschinski, V.
    ;
    Surdilovic, D.
    ;
    Schreck, G.
    In September 2006 an integrated European project (IP) was launched entitled "Flexible Assembly Systems through Workplace-Sharing and Time-Sharing Human-Machine Cooperation (PISA)". The general aim of the project is to develop intelligent assist systems (IAS) in order to support the human worker instead of replace him. The idea is to combine human flexibility, intelligence and skills with the advantages of sophisticated technical systems. Further developments within the project are focused on reconfigurability and reusability of assembly equipment, and required planning tools for end-users. The paper presents the initial project objectives, and the resulting prototype systems developed by the partners of the PISA consortium.
  • Publication
    Flexible assembly systems through workplace-sharing and time-sharing human-machine cooperation (PISA)
    ( 2010)
    Krüger, J.
    ;
    Katschinski, V.
    ;
    Surdilovic, D.
    ;
    Schreck, G.
  • Publication
    Development of collaborative robots (COBOTS) for flexible human-integrated assembly automation
    ( 2010)
    Surdilovic, D.
    ;
    Schreck, G.
    ;
    Schmidt, U.
    This paper addresses the stability and safety issues in powered human-robot-environment interactive systems. It presents the extension of the robust control design framework, initially established for the interaction between an industrial robot and stiff environment, to novel human-robot-environment and human-robot-human-environment interactive systems with physical interfaces. This theoretical framework has been utilized for the control design of novel collaborative robot supporting complex assembly process in automotive industry developed in the PISA project. The practical design and initial application tests with a novel power collaborative developed in the PISA project are also presented in the paper.
  • Publication
    Energieeffizienzcontrolling in vernetzten Fabriken
    ( 2010)
    Krüger, J.
    ;
    Schreck, G.
  • Publication
    Energieeffizienzcontrolling in der Automobilproduktion
    ( 2010)
    Krüger, J.
    ;
    Schreck, G.
  • Publication
    A lunar cargo lander with an integrated ISRU based oxygen plant and autonomous, AI based operations
    ( 2010)
    Bischof, B.
    ;
    Kinnersley, M.
    ;
    Heidmann, H.-J.
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    Schneidereit, M.
    ;
    Lo, R.
    ;
    Schreck, G.
    ;
    Surdilovic, D.