TY  - RPRT
A1  - Krätzig, Thomas
A1  - Rödel, Sascha
A1  - Meyer, Lorenz
A1  - Günthert, Wolfgang
T1  - Reduzierung von Wasserverlusten mittels energieautarker Mess- und Steuereinheiten - Smart Water Power : Schlussbericht : Berichtszeitraum 01.10.2010 - 31.03.2013 : Förderkennzeichen 02WQ1172-74
Y1  - 2013
PB  - Bundesministerium für Bildung und Forschung
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Alhwarin, Faraj
A1  - Ferrein, Alexander
A1  - Scholl, Ingrid
T1  - IR stereo kinect: improving depth images by combining structured light with IR stereo
Y1  - 2014
SP  - 1
EP  - 9
ER  - 
TY  - CHAP
A1  - Niemüller, Tim
A1  - Ewert, Daniel
A1  - Reuter, Sebastian
A1  - Ferrein, Alexander
A1  - Jeschke, Sabina
A1  - Lakemeyer, Gerhard
T1  - RoboCup logistics league sponsored by festo: A competitive factory automation testbed
T2  - RoboCup 2013: Robot World Cup XVII :  Eindhoven; Netherlands; 1 July 2013 through 1 July 2013. (Lecture notes in computer science ; 8371)
N2  - A new trend in automation is to deploy so-called cyber-physical systems (CPS) which combine computation with physical processes. The novel RoboCup Logistics League Sponsored by Festo (LLSF) aims at such CPS logistic scenarios in an automation setting. A team of robots has to produce products from a number of semi-finished products which they have to machine during the game. Different production plans are possible and the robots need to recycle scrap byproducts. This way, the LLSF is a very interesting league offering a number of challenging research questions for planning, coordination, or communication in an application-driven scenario. In this paper, we outline the objectives of the LLSF and present steps for developing the league further towards a benchmark for logistics scenarios for CPS. As a major milestone we present the new automated referee system which helps in governing the game play as well as keeping track of the scored points in a very complex factory scenario.
Y1  - 2014
SN  - 978-3-662-44467-2 (Print) 978-3-662-44468-9 (Online)
SP  - 336
EP  - 347
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Holtrup, S.
A1  - Sadeghfam, Arash
A1  - Heuermann, Holger
A1  - Awakowicz, P.
T1  - Characterization and optimization technique for microwave-driven high-intensity discharge lamps using hot S-parameters
JF  - IEEE transactions on microwave theories and techniques
N2  - High-intensity discharge lamps can be driven by radio-frequency signals in the ISM frequency band at 2.45 GHz, using a matching network to transform the impedance of the plasma to the source impedance. To achieve an optimal operating condition, a good characterization of the lamp in terms of radio frequency equivalent circuits under operating conditions is necessary, enabling the design of an efficient matching network. This paper presents the characterization technique for such lamps and presents the design of the required matching network. For the characterization, a high-intensity discharge lamp was driven by a monofrequent large signal at 2.45 GHz, whereas a frequency sweep over 300 MHz was performed across this signal to measure so-called small-signal hot S-parameters using a vector network analyzer. These parameters are then used as an equivalent load in a circuit simulator to design an appropriate matching network. Using the measured data as a black-box model in the simulation results in a quick and efficient method to simulate and design efficient matching networks in spite of the complex plasma behavior. Furthermore, photometric analysis of high-intensity discharge lamps are carried out, comparing microwave operation to conventional operation.
Y1  - 2014
U6  - https://doi.org/10.1109/TMTT.2014.2342652
SN  - 0018-9480
VL  - 62
IS  - 10
SP  - 2471
EP  - 2480
PB  - IEEE
CY  - New York
ER  - 
TY  - BOOK
A1  - Mai, Herbert
A1  - Schumny, Harald
A1  - Alt, Helmut
T1  - Lineares Optimieren : Maximierung - Minimierung (Vieweg Programmbibliothek Mikrocomputer ; 14) / Helmut Alt ; Harald Schumny [Hrsg.]
Y1  - 1984
SN  - 978-3-663-14049-8 ; 978-3-528-04312-4
PB  - Vieweg + Teubner
CY  - Wiesbaden
ER  - 
TY  - BOOK
A1  - Alt, Helmut
A1  - Schumny, Harald
T1  - Schreiben, Zeichnen, Tabellieren : (TI-59, HP-41 C) (Vieweg-Programmbibliothek Taschenrechner ; 4) / Helmut Alt ; Harald Schumny [Hrsg.]
Y1  - 1983
SN  - 3-528-04233-8
PB  - Vieweg + Teubner
CY  - Wiesbaden
ER  - 
TY  - BOOK
A1  - Alt, Helmut
A1  - Schumny, Harald
T1  - Taschenrechnerarithmetik mit erhöhter Genauigkeit (TI-59/HP-41C) (Vieweg-Programmbibliothek Taschenrechner ; 2) / Helmut Alt ; Harald Schumny [Hrsg.]
Y1  - 1983
SN  - 3-528-04229-X ; 978-3-322-91099-8 ; 978-3-528-04229-5
PB  - Vieweg + Teubner
CY  - Wiesbaden
ER  - 
TY  - BOOK
A1  - Altensen, Frank
A1  - Alt, Helmut
A1  - Schumny, Harald
T1  - Kryptologie (HP-41 C/CV) : Chiffrierung, Textverschlüsselung, Datenschutz, Morsealphabet (Vieweg-Programmbibliothek Taschenrechner ; 7) / Helmut Alt ; Harald Schumny [Hrsg.]
Y1  - 1983
SN  - 3-528-04256-7
PB  - Vieweg + Teubner
CY  - Wiesbaden
ER  - 
TY  - BOOK
A1  - Alt, Helmut
A1  - Schumny, Harald
T1  - Programmierung mathematischer Algorithmen (Vieweg-Programmbibliothek Taschenrechner ; 1) / Helmut Alt ; Harald Schumny [Hrsg.]
Y1  - 1982
SN  - 3-528-04211-7
PB  - Vieweg + Teubner
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Alt, Helmut
T1  - Elektro-Brikett-Zentralspeicherheizung soll die Spitzenlast der EVU schonen
JF  - Energiewirtschaftliche Tagesfragen
Y1  - 1975
SN  - 0720-6240
VL  - 25
IS  - 4
SP  - 148
EP  - 149
PB  - VDE-Verlag
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Alt, Helmut
T1  - Ab 1975 Uranerz aus Rabbit-Lake
JF  - Energiewirtschaftliche Tagesfragen
Y1  - 1974
SN  - 0720-6240
VL  - 24
IS  - 1/2
SP  - 34
PB  - VDE-Verlag
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Krause, Gregor
T1  - Brenchmarking elektrischer Energie in Zweckbauten - Aussagefähigkeit von Energiekennzahlen
T2  - Betriebliches Energiemanagement : Tagung Cottbus, 6. und 7. März 2001. (VDI-Berichte ; 1593)
Y1  - 2001
SN  - 3180915935
SP  - 413
EP  - 422
PB  - VDI-Verlag
CY  - Düsseldorf
ER  - 
TY  - CHAP
A1  - Krause, Gregor
T1  - Energiemanagement in Gebäuden
T2  - Energiemanagement in Gebäuden : 24. April 2002 : Tagung und Ausstellung
Y1  - 2002
SP  - 1
EP  - 10
PB  - Fachhochschule Aachen
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Bragard, Michael
A1  - van Hoek, H.
A1  - De Doncker, R. W.
T1  - A major design step in IETO concept realization that allows overcurrent protection and pushes limits of switching performance
JF  - IEEE transactions on power electronics
N2  - This paper presents the latest prototype of the integrated emitter turn-off thyristor concept, which potentially ranks among thyristor high-power devices like the gate turn-off thyristor and the integrated gate-commutated thyristor (IGCT). Due to modifications of the external driver stage and mechanical press-pack design optimization, this prototype allows for full device characterization. The turn-off capability was increased to 1600 A with an active silicon area of 823mm2 . This leads to a transient peak power of 672.1kW/cm² . Within this paper, measurements and concept assessment are presented and a comparison to state-of-the-art IGCT devices is provided.
Y1  - 2012
U6  - https://doi.org/10.1109/TPEL.2012.2189136
SN  - 0885-8993
VL  - 27
IS  - 9
SP  - 4163
EP  - 4171
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Bragard, G.
A1  - Bragard, Michael
T1  - Ein kostengünstiges, universelles Modellbauinterface
JF  - Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur Förderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.
N2  - Wir stellen einen USB-Baustein vor, der eine kostengünstige und universelle Möglichkeit schafft , im Unterricht den Themenkreis Messen-Steuern-Regeln zu behandeln. Die Funktionalität orientiert sich am CVK-Interface der Firma Fischertechnik. Im Gegensatz zu kommerziellen Lösungen erlaubt unser Aufbau auch den preiswerten Einsatz in Gruppen- oder Einzelarbeit. Abschließend berichten wir über ein Beispiel aus dem Unterrichtseinsatz.
Y1  - 2012
SN  - 0025-5866
VL  - 65
IS  - 5
SP  - 290
EP  - 293
PB  - Seeberger
CY  - Neuss
ER  - 
TY  - CHAP
A1  - Schmiegel, A.
A1  - Koch, K.
A1  - Dittmer, M.
A1  - Braun, M.
A1  - Landau, M.
A1  - Dick, C.
A1  - Bragard, Michael
A1  - [u.a.], 
T1  - Das Sol-ion System : ein System zur Optimierung des Eigenverbrauchs von PV-Strom
T2  - Photovoltaische Solarenergie : 25. Symposium ; 03. - 05. März 2010, Kloster Banz, Bad Staffelstein. - (Wissen für Profis)
Y1  - 2010
SN  - 978-3-941785-23-6
SP  - 354
EP  - 359
PB  - OTTI, Ostbayerisches Technologie-Transfer-Inst.
CY  - Regensburg
ER  - 
TY  - JOUR
A1  - Bragard, Michael
A1  - Bragard, G.
T1  - Erweiterungen für das CBL2-Messinterface von Texas-Instruments
JF  - Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur Förderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.
N2  - Das von Texas-Instruments (TI) vertriebene Interface CBL2 wird über einige TI-Grafik-Rechner (TI-92, TI-89 usw.) angesteuert. Wegen seiner Handlichkeit wird dieses System beim Unterricht in wechselnden Räumen »großen« Messwerterfassungssystemen oft vorgezogen. Das CBL2 bietet drei analoge Eingänge, die immerhin mit 10 Bit Auflösung und bis zu einer Frequenz von 50 kHz arbeiten. Weiterhin besitzt das CBL2 eine Buchse für angeblich nur einen digitalen Ein- bzw. Ausgang. An diesem Eingang wird standardmäßig hauptsächlich der Bewegungssensor CBR betrieben. In diesem Beitrag werden Erweiterungsmöglichkeiten dieses Anschlusses beschrieben.
Y1  - 2003
SN  - 0025-5866
N1  - Zugang nur für MNU-Mitglieder!
VL  - 56
IS  - 2
SP  - 87
EP  - 88
PB  - Seeberger
CY  - Neuss
ER  - 
TY  - THES
A1  - Bragard, Michael
T1  - The integrated emitter turn-off thyristor : an innovative MOS-gated high-power device. - (Aachener Beiträge des ISEA ; 62)
N2  - This thesis introduces the Integrated Emitter Turn-Off (IETO) Thyristor as a new high-power device. Known state-of-the-art research activities like the Dual GCT, the ETO thyristor and the ICT were presented and critically reviewed. A comparison with commercialized solutions identifies the pros and cons of each type of device family. Based on this analysis, the IETO structure is proposed, covering most benefits of each device class. In particular the combination of a MOS-assisted turn-off with a thyristor-based device allows a voltage-controlled MOS switching and the low on-state voltage of the thyristors. The following synthesis of an IETO device stands on a three-dimensional field of optimization spanned by electric, mechanical and thermal aspects. From an electric point of view, the lowest possible parasitic inductance and resistance within the commutation path are optimization criteria. The mechanical construction has to withstand the required contact pressure of multiple kilo Newtons. Finally, thermal borders limit the maximum average current of the device. FEM simulations covering these three aspects are performed for several design proposals. An IETO prototype is constructed and measurements on various test benches attest thermal, mechanical and electric performance. A local decoupling of the external driver stage and the presspack housing is presented by a cable connection. This separation enables a thermal and mechanical independence, which is advantageous in terms of vibrations and thermal cycles including increased reliability. The electric pulse performance of the prototype device is a factor of 3.1 above today''s solutions. In single-pulse measurements, a current up to 1600 A was successfully turned off at 115°C with an active silicon area of 823 mm². One reason for this increased turn-off capability is the extremely low-inductive construction. Additional functionality of the IETO thyristor like over-current self-protection and defined short-circuit failure state are successfully verified.
Y1  - 2012
SN  - 978-3-8440-1152-4
N1  - Zugl.: Aachen, Techn. Hochsch., Diss., 2012
PB  - Shaker
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Bragard, Michael
A1  - Köllensperger, P.
A1  - De Doncker, R. W.
ED  - Dmowski, Antoni
T1  - Der Internally Commutated Thyristor (ICT) : ein neuartiger GCT mit integrierter Ausschalteinheit
T2  - "Nowoczesne urządzenia zasilające w energetyce" : X międzynarodowa konferencja naukowo techniczna, Zakopane, 14-16 marca 2007 r. : materiały konferencyjne
Y1  - 2007
SN  - 83-918709-7-9
SP  - 7.1
EP  - 7.9
PB  - APS Energia
CY  - Warszawa
ER  - 
TY  - BOOK
A1  - Mühl, Thomas
T1  - Einführung in die elektrische Messtechnik : Grundlagen, Messverfahren, Anwendungen. - 4. aktualisierte u. erw. Aufl.
Y1  - 2014
SN  - 978-3-8348-2063-1 ; 978-3-8348-0899-8
PB  - Springer
CY  - Wiesbaden
ET  - 4., aktualisierte u. erw. Aufl.
ER  -