@inproceedings{4064, abstract = {{For feeding piezoelectric ultrasonic motors different kinds of resonant converter concepts are well proven, but a common problem are their bulky and expensive resonant inductors. Therefore, power converters which do not require heavy inductors are of great interest. In this contrbution power converters with non-resonant output filters are investigated fpr reducing weight and volume ofe the magnetic components. The design of such a power converter for a travelling wave type ultrasonic type motor is presented. Implementation highlights like the design of the filters and the concept of an universal digital modulator are outlined and measured results are presented. Finally the concept is compared to resonant converters under consideration of weight, volume and efficiency.}}, author = {{Schulte, Thomas and Fröhleke, Norbert}}, booktitle = {{ACTUATOR 2002}}, location = {{Bremen}}, pages = {{442 -- 445}}, title = {{{PWM-Converter for Travelling Wave Type Ultrasonic Motors.}}}, year = {{2002}}, } @inproceedings{4066, abstract = {{Ultrasonic piezoelectric converters (UPC) require adequate power supplies providing high frequency output voltage of several hundred volts and a total output power up to several kilowatts. Several concepts are conceivable but the potential of optimisation adopting a certain concept depends on the electrical terminal behaviour of the UPC. In this contribution the operating behaviour ofUPC is discussed with respect to their transfer function, the necessary excitation and their terminal behaviour. The latter definies the demands for the power supply, while considering different parameter combinations for bandwidth, quality and piezoelectric capacitance. The main part of this contribution is concerned with the development and realisation of a laboratory power supply for UPC, which is of resonant type.}}, author = {{Schulte, Thomas and Fröhleke, Norbert and Kauczor, Christopher}}, booktitle = {{ACTUATOR 2002}}, location = {{Bremen}}, pages = {{485 -- 488}}, title = {{{Resonant Power Converter for Ultrasonic Piezoelectric Converter.}}}, year = {{2002}}, } @misc{4237, author = {{Borcherding, Holger}}, title = {{{Kühlkörper für einen Frequenzumrichter}}}, year = {{2002}}, } @inproceedings{4407, author = {{Jasperneite, Jürgen}}, location = {{Magdeburg}}, title = {{{IP-Tunneling in der Praxis}}}, year = {{2002}}, } @article{4408, author = {{Jasperneite, Jürgen and Vonnahme, Erik}}, journal = {{Elektronik}}, number = {{9}}, pages = {{68--71}}, title = {{{Extrovertierte Automatisierungslösung - Integrierter Dualport-Ethernet-Switch für die Automatisierungstechnik}}}, year = {{2002}}, } @phdthesis{4409, abstract = {{Zugleich: Dissertation an der Universität Magdeburg}}, author = {{Jasperneite, Jürgen}}, isbn = {{978-3-8322-0832-5}}, pages = {{XV, 207}}, publisher = {{Shaker }}, title = {{{Leistungsbewertung eines lokalen Netzwerkes mit Class-of-Service Unterstützung für die prozessnahe Echtzeitkommunikation}}}, year = {{2002}}, } @inproceedings{4410, author = {{Jasperneite, Jürgen and Neumann, Peter and Theis, Michael and Watson, Kym}}, booktitle = {{4th IEEE International Workshop on Factory Communication Systems (WFCS2002)}}, location = {{Västerås, Sweden }}, pages = {{11--18}}, title = {{{Deterministic Real-Time Communication with Switched Ethernet}}}, year = {{2002}}, } @inproceedings{4411, author = {{Jasperneite, Jürgen}}, booktitle = {{VDE-Kongress: NetWorlds - Leben und Arbeiten in vernetzten Welten}}, location = {{Dresden}}, pages = {{251--256}}, title = {{{Switched Ethernet in der Industrieautomation - wie wird Echtzeitsicherheit gewährleistet ? }}}, year = {{2002}}, } @article{4412, author = {{Watson, Kym and Theis, Michael and Jasperneite, Jürgen}}, journal = {{Fraunhofer IITB Hauszeitschrift visIT}}, title = {{{Industrial Ethernet - Switched Ethernet in der industriellen Automation}}}, year = {{2002}}, } @article{5178, author = {{Weller, Bernhard and Pottgiesser, Uta and Wiesner, Silke}}, journal = {{Glas}}, title = {{{Glas-Report : Verkaufsstand als lastabtragend geklebte Ganzglaskonstruktion}}}, year = {{2002}}, } @phdthesis{5179, author = {{Pottgiesser, Uta}}, isbn = {{ 3-86005-317-5 }}, keywords = {{Doppelte Fassade, Glasbau, Energiebewusstes Bauen}}, pages = {{389}}, publisher = {{Techn. Univ., Lehrstuhl für Baukonstruktionslehre }}, title = {{{ Mehrschalige Glaskonstruktionen. energetische und konstruktive Aspekte }}}, year = {{2002}}, } @inproceedings{2049, author = {{Lohweg, Volker and Müller, Dietmar}}, booktitle = {{4. Workshop Bildverarbeitung für die Medizin}}, editor = {{Handels, Heinz}}, pages = {{325--329}}, publisher = {{Springer-Verlag}}, title = {{{Unscharfe Histogramm Klassifikation mit nichtlinearen Zirkulartransformationen und Potentialfunktionen für die Bildfindung und -analyse}}}, year = {{2001}}, } @inproceedings{2050, author = {{Lohweg, Volker and Müller, Dietmar}}, booktitle = {{IEEE-Eurasip Workshop on Nonlinear Signal and Image Processing}}, editor = {{Arce, Gonzalo}}, publisher = {{Eurasip}}, title = {{{Nonlinear Generalized Circular Transforms for Signal Processing and Pattern Recognition}}}, year = {{2001}}, } @inproceedings{4070, abstract = {{Speed control strategies for piezoelectric drives have been presented by several authors. Beside various control strategies based on adaptive structures like MIAS, MRAS, neural nets or fuzzy control, a completely model based control system using an inner bending wave control and an outer speed control including a torque calculator for linearization has been presented. The paper deals with investigations and improvements of this torque calculator. The setpoint adjustment is focused to utilize the degrees of freedom for the bending wave values, which represents an additional potential for optimization of the performance of the drive system. Theoretical and experimental results confirm the advances.}}, author = {{Schulte, Thomas and Fröhleke, Norbert}}, booktitle = {{Proceedings of International Conference on Advanced Intelligent Mechatronics}}, pages = {{504 -- 509}}, publisher = {{IEEE}}, title = {{{Improved setpoint adjustment for ultrasonic motors}}}, year = {{2001}}, } @inproceedings{4071, abstract = {{Several types of piezoelectric motors are known to deliver few watts of mechanical output power.This paper deals with the design and development of a LLCC-resonant converter for a novel type ofhigh power piezoelectric motor of up to 4kW mechanical power being used in avionics. The devel-opment of a laboratory power supply became necessary, since suitable power supplies for testingthe novel piezoelectric motor during its breadboard stage are not available on the market. The gen-eral function of the LLCC-resonant converter which also provides a DC-offset voltage for avoidingdepolarisation problems is described, implementation highlights are outlined and the weight distri-bution is discussed with respect to future development of power converters for avionics.}}, author = {{Schulte, Thomas and Fröhleke, Norbert and Njiende, H. D.}}, booktitle = {{MAGELEC 2001}}, location = {{Toulouse, France}}, title = {{{Development of Power Converter for High Power Piezoelectric Motors.}}}, year = {{2001}}, } @inproceedings{4073, abstract = {{Several types of piezoelectric motors are known to deliver few watts of mechanical output power.This paper deals with the design and development of a LLCC-resonant converter for a novel type ofhigh power piezoelectric motor of up to 4kW mechanical power being used in avionics. The devel-opment of a laboratory power supply became necessary, since suitable power supplies for testingthe novel piezoelectric motor during its breadboard stage are not available on the market. The gen-eral function of the LLCC-resonant converter which also provides a DC-offset voltage for avoidingdepolarisation problems is described, implementation highlights are outlined and the weight distri-bution is discussed with respect to future development of power converters for avionics.}}, author = {{Schulte, Thomas and Fröhleke, Norbert}}, location = {{Perth, Australia}}, pages = {{507 -- 512}}, title = {{{Development of Power Converter for High Power Piezoelectric Motors.}}}, year = {{2001}}, } @inproceedings{4075, abstract = {{Speed control strategies for piezoelectric driveshave been presented by several authors. Beside various con-trol strategies based on adaptive structures like MIAS,MRAS, neural nets or Fuzzy control, a completely modelbased control system using an inner bending wave controland an outer speed control including a torque calculator for linearization has been presented. This paper deals with investigations and improvements of this torque calculator. The setpoint adjustment is focused toutilize the degrees of freedom for the bending wave values, which represents an additional potential for optimization of the performance of the drive system. Theoretical and experi-mental results confirm the advances.}}, author = {{Schulte, Thomas and Fröhleke, Norbert}}, location = {{Como, Italy}}, pages = {{504 -- 509}}, publisher = {{IEEE}}, title = {{{Improved Setpoint Adjustment for Ultrasonic Motors.}}}, year = {{2001}}, } @misc{10148, author = {{Minde, Frank and Witte, Stefan}}, booktitle = {{Eisenbahntechnische Rundschau}}, number = {{5}}, pages = {{256 -- 263}}, publisher = {{DVV Media Group, Eurailpress}}, title = {{{FEBIS: Kommunikationsbasierte elektronisch gesteuerte Bremse}}}, volume = {{50}}, year = {{2001}}, } @misc{10178, author = {{Kleinsorge, Ralf and Witte, Stefan and Meier, Uwe}}, booktitle = {{Signal + Draht : SD = Rail signalling + telecommunication }}, issn = {{0037-4997}}, number = {{3}}, pages = {{46 -- 50}}, publisher = {{DVV Media Group, Eurailpress}}, title = {{{Radio Communication within Freight Trains}}}, year = {{2001}}, } @misc{10182, author = {{Grasso, Angelo and Witte, Stefan}}, booktitle = {{World Congress on Railway Research : markets, products, technology ; proceedings of the sessions, special poster presentations, posters of the WCRR 2001 ; 25. - 29. November 2001, KölnMesse}}, location = {{Köln}}, publisher = {{WCRR}}, title = {{{Description of the FEBIS wire protocol}}}, year = {{2001}}, } @misc{10183, author = {{Witte, Stefan and Tione, R. and Launay, A. and Coulange, C.}}, booktitle = {{World Congress on Railway Research : markets, products, technology ; proceedings of the sessions, special poster presentations, posters of the WCRR 2001 ; 25. - 29. November 2001, KölnMesse}}, location = {{Köln}}, publisher = {{WCRR}}, title = {{{FEBIS System Aspects}}}, year = {{2001}}, } @misc{10184, author = {{Guigon, Guigon and Witte, Stefan}}, booktitle = {{World Congress on Railway Research : markets, products, technology ; proceedings of the sessions, special poster presentations, posters of the WCRR 2001 ; 25. - 29. November 2001, KölnMesse}}, location = {{Köln}}, publisher = {{WCRR}}, title = {{{Development of the FEBIS-System}}}, year = {{2001}}, } @inproceedings{4751, author = {{Jasperneite, Jürgen and Neumann, Peter and Watson, Kym}}, booktitle = {{Echtzeitkommunikation und Ethernet, Internet: Fachtagung der GI-Fachgruppe 4.4.2 Echtzeitprogrammierung (Pearl 2001)}}, pages = {{40--49}}, title = {{{Real-Time Communication in Industrial Automation with Switched Ethernet Networks}}}, year = {{2001}}, } @inproceedings{4752, author = {{Jasperneite, Jürgen and Neumann, Peter}}, booktitle = {{ 4th IFAC International Conference on Fieldbus Systems and their Applications (FeT´2001)}}, pages = {{144 -- 151}}, title = {{{Performance Evaluation of Switched Ethernet in Realtime Applications}}}, year = {{2001}}, } @inproceedings{4753, author = {{Jasperneite, Jürgen and Neumann, Peter}}, booktitle = {{8th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA´01)}}, pages = {{205 -- 212 }}, title = {{{Switched Ethernet for Factory Communication}}}, year = {{2001}}, } @inproceedings{4754, author = {{Jasperneite, Jürgen}}, booktitle = {{Ifak Workshop: Ethernet-TCP/IP in der Automation - Ein Vergleich der Lösungen}}, publisher = {{ifak}}, title = {{{Modulare Maschinen/Anlagenkonzepte mit IDA}}}, year = {{2001}}, } @article{4755, author = {{Jasperneite, Jürgen}}, journal = {{at - Automatisierungstechnik, R. Oldenbourg Verlag}}, pages = {{206 -- 213}}, title = {{{Analyse und Modellierung von Kommunikationslasten in der Fertigungstechnik}}}, volume = {{49}}, year = {{2001}}, } @inproceedings{2047, abstract = {{Basierend auf der Klasse der Zirkulartransformationen wird ein generalisiertes Positionsspektrum vorgestellt. Die Berechnung des Positionsspektrums kann für alle Transformationen auf ein einheitliches Gerüst aufgebaut werden. Im Unterschied zu anderen in der Literatur bekannten Berechnungsstrategien kann die algorithmische Struktur unabhängig von einer Transformation der o.g. Klasse beibehalten werden. Mit Hilfe von schwach kommutativen Abbildungen kann ein datenreduziertes Positionsspektrum bestimmt werden, das eine Positionsunterscheidung in jedem Fall zulässt. Dieser Ansatz beruht letztendlich auf einer Interpretation des Positionsvektors im Sinne einer Klassentrennbarkeit von Positionen als Merkmal.}}, author = {{Lohweg, Volker and Müller, Dietmar}}, booktitle = {{3. Workshop Bildverarbeitung für die Medizin}}, editor = {{Horsch, Alexander}}, isbn = {{978-3-540-67123-7}}, keywords = {{Positionsspektrum, Zirkulartransformationen, schwach kommutative Abbildungen}}, pages = {{371--375}}, publisher = {{Springer-Verlag}}, title = {{{Das generalisierte Positionsspektrum der Zirkulartransformationen}}}, doi = {{https://doi.org/10.1007/978-3-642-59757-2_70}}, year = {{2000}}, } @inproceedings{2048, abstract = {{Mit Hilfe schneller nichtlinearer Spektraltransformationen ist eine translationsinvariante Merkmalgewinnung möglich. Basierend auf dem Konzept der charakteristischen Matrizen wird ein generalisiertes Verfahren zur Berechnung von Zirkulartransformationen vorgestellt. Durch unterschiedliche Berechnungsstrukturen können die Trenneigenschaften aufgabenspezifisch verändert werden. Die in dieser Arbeit vorgestellten Zirkulartransformationen sind in den praktisch erprobten Trenneigenschaften denen der bekannten CT-Transformation und dem Betragsspektrum der Fourier-Transformation überlegen. Dabei werden keine schwach kommutativen Abbildungen im Eingang benötigt. Anhand von Beispielen wird das Verhalten der Zirkulartransformation demonstriert.}}, author = {{Lohweg, Volker and Müller, Dietmar}}, booktitle = {{Mustererkennung 2000 - 22. DAGM-Symposium}}, editor = {{Sommer, Gerald}}, isbn = {{978-3-540-67886-1}}, keywords = {{Translationsinvariante Transformation, Mustererkennung, Betragsspektrum, Zirkulartransformation}}, pages = {{213--220}}, publisher = {{Springer-Verlag}}, title = {{{Ein generalisiertes Verfahren zur Berechnung von translationsinvarianten Zirkulartransformationen für die Anwendung in der Signal- und Bildverarbeitung}}}, doi = {{https://doi.org/10.1007/978-3-642-59802-9_27}}, year = {{2000}}, } @inproceedings{4077, abstract = {{A complete model-based control for traveling-wave-type ultrasonic motors is presented. The control scheme consists of inner control loops with respect to the oscillation systems, offering all meaningful degrees of freedom for adjusting the traveling bending wave, and outer control loops for torque and speed. After a brief review on modeling the actuator and presentation of a parameter identification method, the control scheme is developed and verified by measurements on a prototype drive system, several measures for the compensation of nonlinearities and temperature effects are developed, and achieved improvements are discussed with respect to the special properties of this novel actuator. Finally, the developed drive is applied to an "active control stick"}}, author = {{Maas, Jürgen and Schulte, Thomas and Fröhleke, Norbert}}, booktitle = {{IEEE/ASME Transactions on Mechatronics}}, pages = {{165 -- 180}}, publisher = {{IEEE}}, title = {{{Model-based control for ultrasonic motors}}}, year = {{2000}}, } @inproceedings{4078, author = {{Schulte, Thomas and Grotstollen, Horst and Fröhleke, Norbert}}, booktitle = {{Conference Proceedings - ACTUATOR 2000}}, location = {{Bremen}}, pages = {{367 -- 370}}, title = {{{Control for Ultrasonic Motors with LLCC-Resonant Converter.}}}, year = {{2000}}, } @misc{10188, author = {{Minde, Frank and Engelmann, Jens and Witte, Stefan}}, booktitle = {{Eisenbahntechnische Rundschau : ETR ; Zeitschrift für die gesamte Eisenbahntechnik}}, issn = {{0013-2845 }}, number = {{11}}, pages = {{745 -- 750}}, publisher = {{DVV Media Group, Eurailpress}}, title = {{{Zentrale Komponenten eines intelligenten Güterzugs}}}, volume = {{49}}, year = {{2000}}, } @inproceedings{4080, abstract = {{A novel speed control for traveling wave type ultrasonic motors is presented and verified by measurements on a prototype drive, Based on an underlying bending wave control the nonlinear torque generation of the USM is compensated by an inverse contact model calculating the reference values of bending wave control under consideration of an optimized set point adjustment. For this task a basis function neural network is applied. By compensation of the nonlinearity the command behavior of the USM approaches that of conventional drives and proven speed control schemes can be implemented as further control loop, The novel speed control investigated offers excellent dynamic responses and is thus attractive for applications in the field of high performance servo systems.}}, author = {{Maas, Jürgen and Schulte, Thomas}}, pages = {{91 -- 96}}, publisher = {{IEEE}}, title = {{{High performance speed control for ultrasonic motors}}}, year = {{1999}}, } @inproceedings{4081, abstract = {{This paper gives a review of research activities at the Institute for Power Electronics and ElectricalDrives in Paderborn to the control of rotary travelling wave type ultrasonic motors. Based on a special designedhardware environment an advanced control scheme for inverter-fed travelling wave type ultrasonic motors is pre-sented. After several modelling steps, including an averaged model for the controller design, a speed control schemeis implemented on a prototype drive. It is realized as an outer control loop of an underlaid voltage and travellingbending wave vector controller. The novel speed control is using an inverse contact model by a neural network, inorder to compensate the nonlinear torque generation of the motor. The so equipped ultrasonic motor-drive meetsrequirements for applications in the field of servo-drives e.g. robotics. Since the reference values of the bendingwave control are calculated from the desired torque value by the neural network, open loop control of the drive´s torque is feasible, too. }}, author = {{Maas, Jürgen and Schulte, Thomas and Grotstollen, H. and Fröhleke, Norbert}}, location = {{Paderborn}}, pages = {{129 -- 143}}, title = {{{Model-Based Control of Travelling Wave Type Ultrasonic Motors.}}}, year = {{1999}}, } @inproceedings{4083, abstract = {{An Active Control Stick (ACS) realized by a travelling wave type ultrasonic motor(USM) is presented. In contrast to the conventional side stick in modern aircrafts, which is onlyoperated by a passive mechanic feedback, forces can be reproduced artificially by an active con-trol stick. Ultrasonic motors are more compact as conventional electrical geared motors andcombine features such as high driving torque at low rotational speed and low noise in operationand low electromagnetic emission. In this paper a control schemes for an active control stickusing a rotary travelling wave type USM is presented which is already implemented and suc-cessfully tested for an one axis prototype version of an ACS within a cooperative project of theDepartment Research and Technology of the DaimlerChrysler AG in Frankfurt, SFIM Indus-tries and the Institute of Power Electronics and Electrical Drive of the University of Paderborn.}}, author = {{Schulte, Thomas and Grotstollen, H. and Schöner, H.-P. and Audren, J.-T.}}, booktitle = {{Proc. of 3rd Int. Symposium on advanced Electromechanical Motion Systems (EM'99) ; 1}}, location = {{Patras, Greece}}, pages = {{583 -- 588}}, title = {{{Active Control Stick Driven by a Piezo Electric Motor}}}, volume = {{1}}, year = {{1999}}, } @book{4210, author = {{Borcherding, Holger}}, isbn = {{3-89720-376-6}}, pages = {{117}}, publisher = {{Papierflieger Verl.}}, title = {{{Eigenschaften von Netzpulsstromrichtern mit eingeprägter Gleichspannung}}}, year = {{1999}}, } @book{5181, author = {{Weller, Bernhard and Pottgiesser, Uta}}, title = {{{Transparente Architektur : Konstruktiver Glasbau}}}, year = {{1999}}, } @inproceedings{4085, abstract = {{This paper deals with an advanced speed control scheme for inverter-fed travelling waveultrasonic motors. It is implemented as an additional outer control loop of an underlaid voltage andtravelling bending wave vector controller and verified by measurements on a prototype drive. Thenovel speed control is using an inverse contact model by a neural network, trained by measured valuesof speed and torque, in order to compensate the nonlinear torque generation of the motor. Since thereference values of the bending wave control are calculated from the desired torque value by the neu-ral network, first an open loop control of the drive ́s torque is feasible and second common speed con-trol schemes, well performing in common electrical drives, can be applied. Thus, the so equippedultrasonic motor-drive meets requirements for applications in the field of servo-drives e.g. robotics. }}, author = {{Maas, Jürgen and Schulte, Thomas and Grotstollen, H.}}, location = {{Harrogate (UK)}}, pages = {{701 -- 708}}, title = {{{Controlled Ultrasonic Motor for Servo-Drive Applications}}}, year = {{1998}}, } @inproceedings{4087, author = {{Schulte, Thomas and Maas, Jürgen and Grotstollen, Horst}}, booktitle = {{ACTUATOR 98}}, location = {{Bremen}}, pages = {{262-- 265}}, title = {{{High Performance Speed Control for Inverter-Fed Ultrasonic Motors Optimized by a Neural Network}}}, year = {{1998}}, } @inproceedings{3999, abstract = {{An optimized control scheme for the most advanced traveling wave type ultrasonic motor powered by a resonant power converter is presented and verified by measurements on a prototype drive. Basing on an averaged drive model, which reflects the slow dynamic behavior of the drive's ultrasonic oscillations by time varying fundamental Fourier coefficients, a cascaded two-phase vector control scheme is designed. The novel drive control divides into an inner voltage and outer bending wave control compensating couplings and suppressing the beat characteristics. Since an amplitude modulation is applied instead of frequency modulation, the well known pull out phenomenon is eliminated in general. By means of an online frequency adaptation to the stator's resonance, the drive's performance is optimized remarkably.}}, author = {{Maas, Jürgen and Schulte, Thomas and Grotstollen, H.}}, booktitle = {{IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting}}, isbn = {{0-7803-4067-1}}, location = {{New Orleans, LA, USA}}, pages = {{690 -- 698}}, publisher = {{IEEE}}, title = {{{Optimized drive control for inverter-fed ultrasonic motors}}}, volume = {{1}}, year = {{1997}}, }