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Auflistung nach Autor:in "Brockmann, Werner"

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  • Konferenzbeitrag
    COBRA - A generic architecture for robust treatment of uncertain information
    (INFORMATIK 2013 – Informatik angepasst an Mensch, Organisation und Umwelt, 2013) Brockmann, Werner; Buschermöhle, Andreas; Schoenke, Jan-Hendrik
    This paper introduces the COBRA-architecture as an approach to handle uncertainties in autonomous robots and embedded systems in order to increase their robustness. In the COBRA-architecture, the trustworthiness of information is therefor modeled explicitly by meta-signals, called trust signals. At a coarse-grained level, the architecture also extends normal functional modules to a triplet of modules, one containing the normal functionality with handling of deficient information, one containing a fall-back strategy for the case of too insufficient information, and one mitigating between them depending on the respective trustworthiness. The COBRA-architecture incorporates the trust signals also at a fine-grained level into the basic signal processing. As an example the extension of a typical class of continuous functions is presented to achieve more trusty results and to generate also a trust signal for the output. Both basic aspects of the COBRA-architecture are illustrated by the control architecture of the walking robot WALTER.
  • Konferenzbeitrag
    Formale Eigenschaften des SILKE-Ansatzes zur Kontrolle selbstoptimierender Systeme
    (INFORMATIK 2008. Beherrschbare Systeme - dank Informatik. Band 2, 2008) Rosemann, Nils; Neumann, Bastian; Brockmann, Werner
    Im Rahmen des Organic Computing werden auch eingebettete Echtzeitsysteme immer öfter mit selbstoptimierenden Eigenschaften ausgestattet. Die selbsttätige Adaption des Systemverhaltens kann aber potentiell zu kritischen Systemzuständen führen. Für spezielle lernfähige Fuzzy-Systeme wurde der sogenannte SILKE-Ansatz entwickelt, um kontrollierend auf den Selbstoptimierungsprozess einzuwirken und ihn zu gewünschten (Meta-)Eigenschaften hinzuleiten. In dieser Arbeit wird als Erweiterung zu bisherigen empirischen Untersuchungen diese Fähigkeit exemplarisch für die ausgleichende Wirkung des SILKE-Ansatzes formal nachgewiesen.
  • Konferenzbeitrag
    A generic architecture for robust automatic detection and suppression of sub-harmonics
    (INFORMATIK 2013 – Informatik angepasst an Mensch, Organisation und Umwelt, 2013) Hülsmann, Jens; Buschermöhle, Andreas; Lintze, Christian; Brockmann, Werner
    Sub-harmonic phenomena become a critical issue as properties of the power grid change. In this paper we propose a generic architecture to detect and suppress these sub-harmonics automatically in a robust way. Therefore different algorithms to analyse the signals from the power grid, like waveletand prony analysis, are used and extended to rate and incorporate signal quality. The results of these algorithms are dynamically fused using according to their trustworthiness in order to achieve a detection as robust as possible. Afterwards the intervention needed to suppress a detected sub-harmonic is determined and applied by remote load management in our case. First experimental results show the validity of this trustworthiness-based architecture.