Schleiß, Philipp

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  • Publication
    Safe adaptation for reliable and energy-efficient E/E architectures
    ( 2017)
    Weiß, Gereon
    ;
    Schleiß, Philipp
    ;
    Drabek, Christian
    ;
    Ruiz, Alejandra
    ;
    Radermacher, Ansgar
    The upcoming changing mobility paradigms request more and more services and features to be included in future cars. Electric mobility and highly automated driving lead to new requirements and demands on vehicle information and communication (ICT) architectures. For example, in the case of highly automated driving, future drivers no longer need to monitor and control the vehicle all the time. This calls for new fault-tolerant approaches of automotive E/E architectures. In addition, the electrification of vehicles requires a flexible underlying E/E architecture which facilitates enhanced energy management. Within the EU-funded SafeAdapt project, a new E/E architecture for future vehicles has been developed in which adaptive systems ensure safe, reliable, and cost-effective mobility. The holistic approach provides the necessary foundation for future invehicle systems and its evaluation shows the great potential of such reliable and energy-efficient E/E architectures.
  • Publication
    Generic management of availability in fail-operational automotive systems
    ( 2017)
    Schleiß, Philipp
    ;
    Drabek, Christian
    ;
    Weiß, Gereon
    ;
    Bauer, Bernhard
    The availability of functionality is a crucial aspect of mission- and safety-critical systems. This is for instance demonstrated by the pursuit to automate road transportation. Here, the driver is not obligated to be part of the control loop, thereby requiring the underlying system to remain operational even after a critical component failure. Advances in the field of mixed-criticality research have allowed to address this topic of fail-operational system behaviour more efficiently. For instance, general purpose computing platforms may relinquish the need for dedicated backup units, as their purpose can be redefined at runtime. Based on this, a deterministic and resource-efficient reconfiguration mechanism is developed, in order to address safety concerns with respect to availability in a generic manner. To find a configuration for this mechanism that can ensure all availability-related safety properties, a design-time method to automatically generate schedules for different modes of operations from declaratively defined requirements is established. To cope with the inherent computational complexity, heuristics are developed to effectively narrow the problem space. Subsequently, this method's applicability and scalability are respectively evaluated qualitatively within an automotive case study and quantitatively by means of a tool performance analysis.
  • Publication
    Ausfallsicherheit mit AUTOSAR: Ressourcen neu verteilen
    ( 2016)
    Schleiß, Philipp
    ;
    Drabek, Christian
    ;
    Weiß, Gereon
    Zukünftiges hochautomatisiertes Fahren stellt völlig neue Anforderungen an die Verfügbarkeit der Software-Architektur im Fahrzeug. Mit derzeitigen Entwicklungsmethoden sind diese Ansprüche nicht zu erfüllen. Die Lösung: eine neue Form des Redundanzmanagements verbunden mit einem automatisierten Entwicklungsprozess.
  • Publication
    Ausfallsichere E/E-Architektur für hochautomatisierte Fahrfunktionen
    ( 2016)
    Weiß, Gereon
    ;
    Schleiß, Philipp
    ;
    Drabek, Christian
    Die Hochautomatisierung erfordert neue Ansätze zur Ausfallsicherheit von Fahrzeugbordnetzen: Wird der Fahrer künftig von der Überwachung des Fahrzeugs befreit, müssen die E/E-Architekturen eine höhere Ausfallsicherheit bereitstellen. Im Rahmen des EU Projekts SafeAdapt wird hierzu ein ganzheitlicher Ansatz vorgestellt.
  • Publication
    Towards flexible and dependable E/E-architectures for future vehicles
    ( 2016)
    Weiß, Gereon
    ;
    Schleiß, Philipp
    ;
    Drabek, Christian
    Future vehicles are expected to evolve towards enabling fully electric and autonomous driving. However, technically this evolution requires fundamental changes of traditional automotive engineering principles. Specifically, challenges arise for the Electric/Electronic (E/E) vehicle architectures as underlying basis for almost all car functionalities. Higher demands on vehicle system's flexibility and dependability have to be incorporated. We present a novel approach for such future E/E-architectures which considers these requirements as first principles by exploiting runtime adaptation capabilities. Based on use cases, a generic hardware and software architecture is presented which enables technology-independent realization of the provided concepts. Additionally, the incorporated generic failure management and design support are introduced. The approach has been evaluated in different prototype demonstrators, including an e-vehicle prototype compromising enhanced driving functionality. Thereby, the advantages of the concepts for future vehicle E/E-architectural development could be highlighted.