TY - RPRT A1 - König, Stefan A1 - Mann, Matthias A1 - Lietz, Gunnar A1 - Klinger, Klaus T1 - Entwicklung von Starter-Generator-Systemen für Flugmotoren auf der Basis von Doppelscheibenaxialflussmaschinen und hoch integrierter Leistungselektronik N2 - Im Bericht wird die Funktionsweise, der Aufbau und die Erprobung eines Starter-Generator-Systems für kleine Verbrennungsmaschinen dargestellt.Bei diesem System erfolgt die Starterfunktion (motorischer Betrieb mit großem Strommoment und kleiner Spannung) sowie die Ladefunktion (generatorischer Betrieb mit kleinerem Strom und hoher Spannung) in einer angepassten Einheit von leistungselektronischen Komponenten und permanenterregter Axialflussmaschine. Die Axialflussmaschine wird direkt (ohne eigene Lagerung) an die Verbrennungsmaschine angeflanscht und zeichnet sich durch sehr geringe Bautiefe sowie einen der Verbrennungsmaschine entsprechenden Durchmesser aus. Die leistungselektronischen Bauelemente sind für einen Strom von 150 A bei 12 V Spannung und 15 A bei bis zu 120 V Spannung ausgelegt und in bezug auf Masse und Volumen optimiert. KW - Starter-Generator-System KW - Dreiphasiger Wechselrichter KW - Pulssteller KW - Axialflussmaschine Y1 - 2002 ER - TY - BOOK A1 - König, Stefan A1 - Klinger, Klaus A1 - Klug, Bernhard T1 - Untersuchung des Anlaufverhaltens von Wasserpumpenantrieben im Wasserwerk Briesen : Abschlussbericht Mai 2002 KW - Drehstromasynchronmaschine KW - Anlaufverhalten KW - Wasserpumpenantrieb Y1 - 2002 PB - Cottbus : BTU ER - TY - CHAP A1 - Mehner, Stefan A1 - Klauck, Ronny A1 - König, Hartmut ED - Makedon, Fillia ED - Betke, Margrit ED - Seif El-Nasr, Magy ED - Maglogiannis, Ilias T1 - Location-independent fall detection with smartphone T2 - The 6th International Conference on PErvasive Technologies Related to Assistive Environments, PETRA '13, Island of Rhodes, Greece, May 29-31, 2013 N2 - Due to demographic changes in developed industrial countries and a better medical care system, the number of elderly people who still live in their home environment is rapidly growing because there they feel more comfortable and independent as in a clinical environment or in a residential care home. The elderly often live alone and receive only irregular visits. Due to impaired physical skills the probability of falls significantly increases. The detection of falls is a crucial aspect in the care of elderly. Falls are often detected very late with severe consequential damages. There are existing approaches for automatic fall detection. They usually deploy special external devices. Elderly people often do not accept these devices because they expose their frailty. In this paper, we present a location-independent fall detection method implemented as a smartphone application for an inconspicuous use in nearly every situation of the daily life. The difficulty of our approach is in the low resolution range of integrated acceleration sensors and the limited energy supply of the smartphone. As solution, we apply a modular threshold-based algorithm which uses the acceleration sensor with moderate energy consumption. Its fall detection rate is in the average of current relevant research. Y1 - 2013 SN - 978-1-4503-1973-7 U6 - https://doi.org/10.1145/2504335.2504346 PB - ACM CY - New York, NY ER - TY - GEN A1 - Schedler, Olaf A1 - Koch, Stefan A1 - König, Claus ED - Pousttchi, Key ED - Schlieter, Hannes ED - Gleiß, Alexander T1 - Simulierte Prädiktoren der Organfunktionsstörungen bei Unfallverletzten T2 - Digital Health Workshop 'Digitale Innovationen im Gesundheitsmarkt – Märkte, Geschäftsmodelle, Technologien Y1 - 2019 UR - https://hpi.de/digital-health-center/events/2019/cfp-workshop-digitale-innovationen-im-gesundheitsmarkt.html SN - 978-3-95545-319-0 CY - Potsdam ER - TY - GEN A1 - Kazula, Stefan A1 - Mischke, Marcel A1 - König, Paul A1 - Höschler, Klaus T1 - Evaluation of Variable Pitot Inlet Concepts for Transonic and Supersonic Civil Aviation T2 - MATEC Web of Conferences : Proceedings of the 9th EASN International Conference on Innovation in Aviation & Space N2 - This paper describes the selection of the ideal variable inlet concept group by utilising results of aerodynamic investigations, system safety analyses and integration studies. Aerodynamic and functional inlet requirements are explained and variable inlet concept groups are introduced. The concept evaluation by means of a weighted point rating is presented. The respective concept groups are analysed and evaluated regarding economic, functional and safety requirements. By means of this evaluation, the concept group that adjusts the inlet geometry by rigid segment repositioning is identified as most suitable concept group. The early selection of the most suitable concept group enables more detailed subsequent concept investigations, potentially enabling the technology of variable inlets for future commercial aircraft. Y1 - 2019 U6 - https://doi.org/10.1051/matecconf/201930402016 SN - 2261-236X VL - 304 ER - TY - GEN A1 - König, Paul A1 - Mischke, Marcel A1 - Pohl, Michael A1 - Kazula, Stefan A1 - Höschler, Klaus T1 - Concept Development and Evaluation for a Broadband Noise Absorbing Acoustic Liner Concept for Aviation T2 - 24th International Society For Air Breathing Engines (ISABE-2019-24261), 22.-27. September 2019 N2 - This paper presents design adaptations during the further development of innovative broadband acoustic liner concepts (Foil Helmholtz Resonator Liner; FHR-Liners) which utilise flexible foils within a honeycomb structure to attenuate engine and aircraft noise. The requirements for acoustic liners in aviation are described and utilised to derive evaluation criteria. Modifications of the FHR-Liner concept are introduced. A suitable concept evaluation method based on VDI 2225 is applied to evaluate the modified liner concepts concerning the main evaluation criteria. Y1 - 2019 UR - https://2019.isabe.org/content/uploads/ISABE2019_Technical_Program.pdf ER - TY - GEN A1 - Mehner, Stefan A1 - König, Hartmut ED - Perdisci, Roberto ED - Maurice, Clémentine ED - Giacinto, Giorgio ED - Almgren, Magnus T1 - No Need to Marry to Change Your Name! Attacking Profinet IO Automation Networks Using DCP T2 - Detection of Intrusions and Malware, and Vulnerability Assessment 16th International Conference, DIMVA 2019, Gothenburg, Sweden, June 19–20, 2019, Proceedings N2 - Current developments in digitization and industry 4.0 bear new challenges for automation systems. In order to enable interoperability and vertical integration of corporate management systems, these networks have evolved from formerly proprietary solutions to the application of Ethernet-based communication and internet standards. This development is accompanied by an increase in the number of threats. Although the most critical IT protection objective for automation systems is availability, usually no security mechanisms have been integrated into automation protocols. Also Ethernet offers no protection by design for these protocols. One of the most popular real-time protocols for industrial applications is Profinet IO. In this paper, we describe a Denial-of-Service attack on Profinet IO that exploits a vulnerability in the Discovery and Basic Configuration Protocol (DCP) which interrupts the Application Relationship between an IO Controller and an IO Device, and thus prevents the system from being repaired by the operator. The attack combines port stealing with the sending of forged DCP packets and causes a system downtime, which in affected production networks probably lead to a serious financial damage and, in case of critical infrastructures, even represents a high risk for the supply of society. We demonstrate the practical feasibility of the attack using realistic hardware and scenarios and discuss its significance for also other setups. Y1 - 2019 UR - https://link.springer.com/chapter/10.1007/978-3-030-22038-9_19 SN - 978-3-030-22037-2 SN - 978-3-030-22038-9 U6 - https://doi.org/10.1007/978-3-030-22038-9_19 SP - 396 EP - 414 PB - Springer ER - TY - GEN A1 - Schuster, Franka A1 - Paul, Andreas A1 - Mehner, Stefan A1 - König, Hartmut A1 - Kanisch, Heiko T1 - IT-Sicherheit im Kraftwerk - Methoden zur automatisierten Sicherheitsbewertung und Anomalieerkennung in hochsensiblen Netzen T2 - 51. Kraftwerkstechnisches Kolloquium, 21. - 23. Oktober 2019, Dresden N2 - Die zunehmende Digitalisierung auch in Kraftwerken erfordert entsprechend auf diesen Bereich zugeschnittene IT-Sicherheitsverfahren und -technologien. Aktuell stellt die obligatorische Implementierung eines angemessenen Sicherheitsprozesses, wie eines Informationssicherheitsmanagementsystems (ISMS), Betreiber von Erzeugungsanlagen, Energienetzen und anderen kritischen Infrastrukturen vor eine große Herausforderung, denn es gilt, zahlreiche Anforderungen bei der Implementierung zu erfüllen, ohne dass konkrete Methoden zur Umsetzung verfügbar sind. Gleichzeitig ist derEinsatz von IT-Sicherheitstechnologien aus der Bürowelt aufgrund gänzlich anderer Eigenschaften und Anforderungen industrieller Netze kaum möglich. Zur Adressierung dieser Problematik wurden von der Brandenburgischen Technischen Universität Cottbus-Senftenberg (BTU) und der Lausitz Energie Kraftwerke AG (LEAG) innovative Verfahren zur (1) systematischen Bewertung sowie (2) Verbesserung der IT-Sicherheit in hochsensiblen Netzen konzipiert und prototypisch implementiert, die ein diesem Beitrag mit den zugehörigen Forschungsprojekten vorgestellt werden. Um eine Beeinflussung empfindlicher Kraftwerksanlagen auszuschließen, wurde für alle Methoden ein nichtintrusiver Entwicklungsansatz verfolgt, der sich durch eine passive und vom jeweiligen industriellen Prozess vollständig entkoppelte Analyse auszeichnet und sich daher für einen breiten Einsatz in Netzen mit hohen Verfügbarkeitsanforderungen eignet. Y1 - 2019 UR - https://tu-dresden.de/ing/maschinenwesen/ifvu/evt/kraftwerkstechnisches-kolloquium/51-kraftwerkstechnisches-kolloquium-2019 SN - 978-3-934409-94-1 SN - 978-3-934409-93-4 SP - 680 EP - 703 PB - SAXONIA Standortentwicklungs- und -verwaltungsgesellschaft mbH CY - Freiberg ER - TY - GEN A1 - Fenner, Daniel A1 - Christen, Andreas A1 - Grimmond, Sue A1 - Meier, Fred A1 - Morrison, William A1 - Zeeman, Matthias A1 - Barlow, Janet A1 - Birkmann, Jörn A1 - Blunn, Lewis A1 - Chrysoulakis, Nektarios A1 - Clements, Matthew A1 - Glazer, Russell A1 - Hertwig, Denise A1 - Kotthaus, Simone A1 - König, Kai A1 - Looschelders, Dana A1 - Mitraka, Zina A1 - Poursanidis, Dimitris A1 - Tsirantonakis, Dimitris A1 - Bechtel, Benjamin A1 - Benjamin, Kit A1 - Beyrich, Frank A1 - Briegel, Ferdinand A1 - Feigel, Gregor A1 - Gertsen, Carlotta A1 - Iqbal, Nimra A1 - Kittner, Jonas A1 - Lean, Humphrey A1 - Liu, Yiqing A1 - Luo, Zhiwen A1 - McGrory, Megan A1 - Metzger, Swen A1 - Paskin, Matthew A1 - Ravan, Marvin A1 - Ruhtz, Thomas A1 - Saunders, Bethany A1 - Scherer, Dieter A1 - Smith, Stefan Thor A1 - Stretton, Megan A1 - Trachte, Katja A1 - Van Hove, Melania T1 - urbisphere-Berlin campaign: investigating multi-scale urban impacts on the atmospheric boundary layer T2 - Bulletin of the American Meteorological Society N2 - For next-generation weather and climate numerical models to resolve cities, both higher spatial resolution and sub-grid parameterizations of urban canopy-atmosphere processes are required. Key is to better understand intra-urban variability and urban-rural differences in atmospheric boundary layer (ABL) dynamics. This includes upwind-downwind effects due to cities’ influences on the atmosphere beyond their boundaries. To address these aspects a network of >25 ground-based remote-sensing sites was designed for the Berlin region (Germany), considering city form, function, and typical weather conditions. This allows investigation of how different urban densities and human activities impact ABL dynamics. As part of the interdisciplinary European Research Council Grant urbisphere, the network was operated from Autumn 2021 to Autumn 2022. Here we provide an overview of the scientific aims, campaign setup, and results from two days, highlighting multi-scale urban impacts on the atmosphere in combination with high-resolution numerical modeling at 100 m grid-spacing. During a spring day, the analyzes show systematic upwind-city-downwind effects in ABL heights, largely driven by urban-rural differences in surface heat fluxes. During a heatwave day, ABL height is remarkably deep, yet spatial differences in ABL heights are less pronounced due to overall dry soil conditions, resulting in similar observed surface heat fluxes. Our modeling results provide further insights into ABL characteristics not resolved by the observation network, highlighting synergies between both approaches. Our data and findings will support modeling to help deliver services to a wider community from citizens to those managing health, energy, transport, land-use and other city infrastructure and operations. Y1 - 2024 U6 - https://doi.org/10.1175/BAMS-D-23-0030.1 SN - 0003-0007 SN - 1520-0477 VL - 105 PB - American Meteorological Society ER - TY - CHAP A1 - Helming, Katharina A1 - Tscherning, Karen A1 - König, Bettina A1 - Sieber, Stefan A1 - Wiggering, Hubert A1 - Kuhlmann, Tom A1 - Wascher, Dirk A1 - Pérez-Soba, Marta A1 - Smeets, Peter A1 - Tabbush, Paul A1 - Dilly, Oliver A1 - Hüttl, Reinhard F. A1 - Bach, Hanne ED - Helming, Katharina ED - Pérez-Soba, Marta ED - Tabbush, Paul T1 - Ex ante impact assessment of land use change in European regions - the SENSOR approach T2 - Sustainability impact assessment of multifunctional land use changes Y1 - 2008 SN - 978-3-540-78648-1 SN - 978-3-540-78647-4 SP - 77 EP - 105 PB - Springer CY - Berlin [u.a.] ER -