---
_id: '9553'
abstract:
- lang: eng
  text: 'In the design process of energy harvesting systems based on piezoelectric
    elements, achievable energy output is the most interesting factor. To estimate
    this amount a priori manufacturing of prototypes a mathematical model is very
    helpful. Within this contribution we will introduce a model based on electro-mechanical
    circuit theory. Its parameters are identified by measurements and the model is
    validated by comparison to experimental results. The model is designed to support
    the development-engineer in the dimensioning of energy harvesting units to specific
    application demands. Two main challenges in device design are investigated with
    the mathematical model: influence of the ambient excitation frequency, and influence
    of the load impedance. Typically, the equivalent model approach delivers models
    for piezoelectric elements that are driven in resonance by electrical excitation.
    In the case of energy harvesting the piezoelectric elements are excited mechanically
    and most often non-resonant. Thus, we first set up a mechanical equivalent model
    for base excited systems. In first approximation it represents an energy harvesting
    unit around one resonance frequency. The model is expandable for a wider frequency
    range using the superpositioning of multiple circuits. From the viewpoint of optimum
    energy transformation between mechanical and electrical energy it is favorable
    to drive piezoelectric elements at resonance or anti-resonance. Thus, an energy
    harvesting system should be tuned to the excitation frequency.'
citation:
  ama: Twiefel J, Richter B, Hemsel T, Wallaschek J, eds. <i>Model-Based Design of
    Piezoelectric Energy Harvesting Systems</i>. Vol 6169.; 2006:616909-616909-616910.
    doi:<a href="https://doi.org/10.1117/12.658623">10.1117/12.658623</a>
  apa: Twiefel, J., Richter, B., Hemsel, T., &#38; Wallaschek, J. (Eds.). (2006).
    <i>Model-based design of piezoelectric energy harvesting systems</i> (Vol. 6169,
    pp. 616909-616909–616910). <a href="https://doi.org/10.1117/12.658623">https://doi.org/10.1117/12.658623</a>
  bibtex: '@book{Twiefel_Richter_Hemsel_Wallaschek_2006, title={Model-based design
    of piezoelectric energy harvesting systems}, volume={6169}, DOI={<a href="https://doi.org/10.1117/12.658623">10.1117/12.658623</a>},
    year={2006}, pages={616909-616909–10} }'
  chicago: Twiefel, Jens, Björn Richter, Tobias Hemsel, and Jörg Wallaschek, eds.
    <i>Model-Based Design of Piezoelectric Energy Harvesting Systems</i>. Vol. 6169,
    2006. <a href="https://doi.org/10.1117/12.658623">https://doi.org/10.1117/12.658623</a>.
  ieee: J. Twiefel, B. Richter, T. Hemsel, and J. Wallaschek, Eds., <i>Model-based
    design of piezoelectric energy harvesting systems</i>, vol. 6169. 2006, pp. 616909-616909–10.
  mla: Twiefel, Jens, et al., editors. <i>Model-Based Design of Piezoelectric Energy
    Harvesting Systems</i>. Vol. 6169, 2006, pp. 616909-616909–10, doi:<a href="https://doi.org/10.1117/12.658623">10.1117/12.658623</a>.
  short: J. Twiefel, B. Richter, T. Hemsel, J. Wallaschek, eds., Model-Based Design
    of Piezoelectric Energy Harvesting Systems, 2006.
date_created: 2019-04-29T09:46:37Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
doi: 10.1117/12.658623
editor:
- first_name: Jens
  full_name: Twiefel, Jens
  last_name: Twiefel
- first_name: Björn
  full_name: Richter, Björn
  last_name: Richter
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
intvolume: '      6169'
language:
- iso: eng
page: 616909-616909-10
status: public
title: Model-based design of piezoelectric energy harvesting systems
type: conference_editor
user_id: '55222'
volume: 6169
year: '2006'
...
---
_id: '9558'
author:
- first_name: S
  full_name: Wilmanns, S
  last_name: Wilmanns
- first_name: K
  full_name: Nakamura, K
  last_name: Nakamura
- first_name: Maik
  full_name: Mracek, Maik
  last_name: Mracek
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: 'Wilmanns S, Nakamura K, Mracek M, Hemsel T. Non-resonant piezoelectric motors
    driven in audible frequency range. In: <i>Proceedings of 2nd International Workshop
    on Piezoelectric Materials and Applications in Actuators</i>. Vol Band 180. HNI
    Verlagsschriftenreihe. Paderborn, Germany; 2006:205.'
  apa: Wilmanns, S., Nakamura, K., Mracek, M., &#38; Hemsel, T. (2006). Non-resonant
    piezoelectric motors driven in audible frequency range. In <i>Proceedings of 2nd
    International Workshop on Piezoelectric Materials and Applications in Actuators</i>
    (Vol. Band 180, p. 205). Paderborn, Germany.
  bibtex: '@inproceedings{Wilmanns_Nakamura_Mracek_Hemsel_2006, place={Paderborn,
    Germany}, series={HNI Verlagsschriftenreihe}, title={Non-resonant piezoelectric
    motors driven in audible frequency range}, volume={Band 180}, booktitle={Proceedings
    of 2nd International Workshop on Piezoelectric Materials and Applications in Actuators},
    author={Wilmanns, S and Nakamura, K and Mracek, Maik and Hemsel, Tobias}, year={2006},
    pages={205}, collection={HNI Verlagsschriftenreihe} }'
  chicago: Wilmanns, S, K Nakamura, Maik Mracek, and Tobias Hemsel. “Non-Resonant
    Piezoelectric Motors Driven in Audible Frequency Range.” In <i>Proceedings of
    2nd International Workshop on Piezoelectric Materials and Applications in Actuators</i>,
    Band 180:205. HNI Verlagsschriftenreihe. Paderborn, Germany, 2006.
  ieee: S. Wilmanns, K. Nakamura, M. Mracek, and T. Hemsel, “Non-resonant piezoelectric
    motors driven in audible frequency range,” in <i>Proceedings of 2nd International
    Workshop on Piezoelectric Materials and Applications in Actuators</i>, 2006, vol.
    Band 180, p. 205.
  mla: Wilmanns, S., et al. “Non-Resonant Piezoelectric Motors Driven in Audible Frequency
    Range.” <i>Proceedings of 2nd International Workshop on Piezoelectric Materials
    and Applications in Actuators</i>, vol. Band 180, 2006, p. 205.
  short: 'S. Wilmanns, K. Nakamura, M. Mracek, T. Hemsel, in: Proceedings of 2nd International
    Workshop on Piezoelectric Materials and Applications in Actuators, Paderborn,
    Germany, 2006, p. 205.'
date_created: 2019-04-29T09:53:46Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
page: '205'
place: Paderborn, Germany
publication: Proceedings of 2nd International Workshop on Piezoelectric Materials
  and Applications in Actuators
series_title: HNI Verlagsschriftenreihe
status: public
title: Non-resonant piezoelectric motors driven in audible frequency range
type: conference
user_id: '55222'
volume: Band 180
year: '2006'
...
---
_id: '9559'
author:
- first_name: W
  full_name: Zhou, W
  last_name: Zhou
- first_name: Bo
  full_name: Fu, Bo
  last_name: Fu
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Zhou W, Fu B, Hemsel T, Wallaschek J. Piezoelectrics in dental tools. In:
    <i>Proceedings of 2nd International Workshop on Piezoelectric Materials and Applications
    in Actuators</i>. Vol Band 180. HNI Verlagsschriftenreihe. Paderborn, Germany;
    2006:213.'
  apa: Zhou, W., Fu, B., Hemsel, T., &#38; Wallaschek, J. (2006). Piezoelectrics in
    dental tools. In <i>Proceedings of 2nd International Workshop on Piezoelectric
    Materials and Applications in Actuators</i> (Vol. Band 180, p. 213). Paderborn,
    Germany.
  bibtex: '@inproceedings{Zhou_Fu_Hemsel_Wallaschek_2006, place={Paderborn, Germany},
    series={HNI Verlagsschriftenreihe}, title={Piezoelectrics in dental tools}, volume={Band
    180}, booktitle={Proceedings of 2nd International Workshop on Piezoelectric Materials
    and Applications in Actuators}, author={Zhou, W and Fu, Bo and Hemsel, Tobias
    and Wallaschek, Jörg}, year={2006}, pages={213}, collection={HNI Verlagsschriftenreihe}
    }'
  chicago: Zhou, W, Bo Fu, Tobias Hemsel, and Jörg Wallaschek. “Piezoelectrics in
    Dental Tools.” In <i>Proceedings of 2nd International Workshop on Piezoelectric
    Materials and Applications in Actuators</i>, Band 180:213. HNI Verlagsschriftenreihe.
    Paderborn, Germany, 2006.
  ieee: W. Zhou, B. Fu, T. Hemsel, and J. Wallaschek, “Piezoelectrics in dental tools,”
    in <i>Proceedings of 2nd International Workshop on Piezoelectric Materials and
    Applications in Actuators</i>, 2006, vol. Band 180, p. 213.
  mla: Zhou, W., et al. “Piezoelectrics in Dental Tools.” <i>Proceedings of 2nd International
    Workshop on Piezoelectric Materials and Applications in Actuators</i>, vol. Band
    180, 2006, p. 213.
  short: 'W. Zhou, B. Fu, T. Hemsel, J. Wallaschek, in: Proceedings of 2nd International
    Workshop on Piezoelectric Materials and Applications in Actuators, Paderborn,
    Germany, 2006, p. 213.'
date_created: 2019-04-29T09:57:26Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
page: '213'
place: Paderborn, Germany
publication: Proceedings of 2nd International Workshop on Piezoelectric Materials
  and Applications in Actuators
series_title: HNI Verlagsschriftenreihe
status: public
title: Piezoelectrics in dental tools
type: conference
user_id: '55222'
volume: Band 180
year: '2006'
...
---
_id: '15348'
abstract:
- lang: eng
  text: In spite of the outstanding importance of neuronavigational techniques the
    neurosurgeon has still highly to rely on his visual as well as tactile sense and
    his experience in distinguishing tumor tissue from intact brain parenchyma. All
    the more - as neuronavigation is based on preoperative imaging scans - considerable
    brain shift may occur during surgery and that will lead to erroneous results.
    Furthermore the surgeon loses his tactile sense during endoscopic surgery. Therefore
    control of tissue manipulation is limited today to the fiberoptic image techniques,
    possibly ensured by neuronavigational supervision or haptic feedback systems.
    In robotic guided surgery the missing tactile sensing will be particularly crucial.
    The human sense of touch is a highly complex sensory perception comprising epicritical
    and propiozeptive information processing. The development of a tool for intraoperative
    tactile perception will be a highly challenging task to improve the safety during
    surgery. Different sensor concepts (elasticity probe and resonant piezoelectric
    sensor) have been set up and adapted to distinguish elasticity differences in
    soft tissue mimicking gel phantoms. The elasticity probe is based on two leaf
    springs of different bending stiffness. The two tips of the beams act both on
    the material to be tested. The two deflections measured by strain gauges are processed
    in a mathematical model calculating the phantoms' stiffness. In contrast to this
    differential sensing concept the piezoelectric sensor, which is driven at its
    resonance, measures stiffness and damping of the phantoms by evaluating frequency
    or phase shift and amplitude change. Gelatine gels of different concentrations
    (5{\%}, 10{\%}, 20{\%} of gelatine) have been used for a characterization of sensor
    elements and their sensitivity to elasticity distinctions. Using the hand-guided
    elasticity probe the determination of gel elasticity is performed with high reliability.
    By constant mechanical load the piezoelectric sensor also presents a proportional
    dependency of tissue elasticity.
author:
- first_name: Romina
  full_name: Kehl, Romina
  last_name: Kehl
- first_name: Ralf
  full_name: Stroop, Ralf
  last_name: Stroop
- first_name: David
  full_name: Oliva Uribe, David
  last_name: Oliva Uribe
- first_name: Tobias
  full_name: Hemsel, Tobias
  last_name: Hemsel
- first_name: Bernd
  full_name: Henning, Bernd
  id: '213'
  last_name: Henning
citation:
  ama: 'Kehl R, Stroop R, Oliva Uribe D, Hemsel T, Henning B. Tactile sensors for
    determination of elastic properties of brain tissue mimicking phantoms. In: ;
    2006.'
  apa: Kehl, R., Stroop, R., Oliva Uribe, D., Hemsel, T., &#38; Henning, B. (2006).
    Tactile sensors for determination of elastic properties of brain tissue mimicking
    phantoms. Presented at the Jahrestagung der Deutschen Gesellschaft für Computer-
    und Roboterassistierte Chirurgie (CURAC 2006), Hannover.
  bibtex: '@inproceedings{Kehl_Stroop_Oliva Uribe_Hemsel_Henning_2006, title={Tactile
    sensors for determination of elastic properties of brain tissue mimicking phantoms},
    author={Kehl, Romina and Stroop, Ralf and Oliva Uribe, David and Hemsel, Tobias
    and Henning, Bernd}, year={2006} }'
  chicago: Kehl, Romina, Ralf Stroop, David Oliva Uribe, Tobias Hemsel, and Bernd
    Henning. “Tactile Sensors for Determination of Elastic Properties of Brain Tissue
    Mimicking Phantoms,” 2006.
  ieee: R. Kehl, R. Stroop, D. Oliva Uribe, T. Hemsel, and B. Henning, “Tactile sensors
    for determination of elastic properties of brain tissue mimicking phantoms,” presented
    at the Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte
    Chirurgie (CURAC 2006), Hannover, 2006.
  mla: Kehl, Romina, et al. <i>Tactile Sensors for Determination of Elastic Properties
    of Brain Tissue Mimicking Phantoms</i>. 2006.
  short: 'R. Kehl, R. Stroop, D. Oliva Uribe, T. Hemsel, B. Henning, in: 2006.'
conference:
  end_date: 14.10.2006
  location: Hannover
  name: Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte
    Chirurgie (CURAC 2006)
  start_date: 12.10.2006
date_created: 2019-12-17T14:33:15Z
date_updated: 2022-01-06T06:52:21Z
department:
- _id: '49'
language:
- iso: eng
status: public
title: Tactile sensors for determination of elastic properties of brain tissue mimicking
  phantoms
type: conference
user_id: '15911'
year: '2006'
...
---
_id: '9527'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: 'Hemsel T. Modellgestützte Analyse piezoelektrischer Transformatoren. In: <i>Mechatronik
    2005 Innovative Produktentwicklung</i>. Vol 1892. VDI-Berichte. Düsseldorf; 2005:1013-1032.'
  apa: Hemsel, T. (2005). Modellgestützte Analyse piezoelektrischer Transformatoren.
    In <i>Mechatronik 2005 Innovative Produktentwicklung</i> (Vol. 1892, pp. 1013–1032).
    Düsseldorf.
  bibtex: '@inproceedings{Hemsel_2005, place={Düsseldorf}, series={VDI-Berichte},
    title={Modellgestützte Analyse piezoelektrischer Transformatoren}, volume={1892},
    number={Band 2}, booktitle={Mechatronik 2005 Innovative Produktentwicklung}, author={Hemsel,
    Tobias}, year={2005}, pages={1013–1032}, collection={VDI-Berichte} }'
  chicago: Hemsel, Tobias. “Modellgestützte Analyse Piezoelektrischer Transformatoren.”
    In <i>Mechatronik 2005 Innovative Produktentwicklung</i>, 1892:1013–32. VDI-Berichte.
    Düsseldorf, 2005.
  ieee: T. Hemsel, “Modellgestützte Analyse piezoelektrischer Transformatoren,” in
    <i>Mechatronik 2005 Innovative Produktentwicklung</i>, 2005, vol. 1892, no. Band
    2, pp. 1013–1032.
  mla: Hemsel, Tobias. “Modellgestützte Analyse Piezoelektrischer Transformatoren.”
    <i>Mechatronik 2005 Innovative Produktentwicklung</i>, vol. 1892, no. Band 2,
    2005, pp. 1013–32.
  short: 'T. Hemsel, in: Mechatronik 2005 Innovative Produktentwicklung, Düsseldorf,
    2005, pp. 1013–1032.'
date_created: 2019-04-29T08:33:46Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
intvolume: '      1892'
issue: Band 2
language:
- iso: eng
page: 1013-1032
place: Düsseldorf
publication: Mechatronik 2005 Innovative Produktentwicklung
series_title: VDI-Berichte
status: public
title: Modellgestützte Analyse piezoelektrischer Transformatoren
type: conference
user_id: '55222'
volume: 1892
year: '2005'
...
---
_id: '9528'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Maik
  full_name: Mracek, Maik
  last_name: Mracek
- first_name: Jens
  full_name: Twiefel, Jens
  last_name: Twiefel
- first_name: Piotr
  full_name: Vasiljev, Piotr
  last_name: Vasiljev
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Hemsel T, Mracek M, Twiefel J, Vasiljev P, Wallaschek J. Linear ultrasonic
    motors based on coupling of longitudinal vibrations. In: <i>Proceedings of the
    First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>.
    Yokohama, Japan; 2005:32-36.'
  apa: Hemsel, T., Mracek, M., Twiefel, J., Vasiljev, P., &#38; Wallaschek, J. (2005).
    Linear ultrasonic motors based on coupling of longitudinal vibrations. In <i>Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>
    (pp. 32–36). Yokohama, Japan.
  bibtex: '@inproceedings{Hemsel_Mracek_Twiefel_Vasiljev_Wallaschek_2005, place={Yokohama,
    Japan}, title={Linear ultrasonic motors based on coupling of longitudinal vibrations},
    booktitle={Proceedings of the First International Conference on Ultrasonic Motors
    and Actuators (IWOUMA)}, author={Hemsel, Tobias and Mracek, Maik and Twiefel,
    Jens and Vasiljev, Piotr and Wallaschek, Jörg}, year={2005}, pages={32–36} }'
  chicago: Hemsel, Tobias, Maik Mracek, Jens Twiefel, Piotr Vasiljev, and Jörg Wallaschek.
    “Linear Ultrasonic Motors Based on Coupling of Longitudinal Vibrations.” In <i>Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>,
    32–36. Yokohama, Japan, 2005.
  ieee: T. Hemsel, M. Mracek, J. Twiefel, P. Vasiljev, and J. Wallaschek, “Linear
    ultrasonic motors based on coupling of longitudinal vibrations,” in <i>Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>,
    2005, pp. 32–36.
  mla: Hemsel, Tobias, et al. “Linear Ultrasonic Motors Based on Coupling of Longitudinal
    Vibrations.” <i>Proceedings of the First International Conference on Ultrasonic
    Motors and Actuators (IWOUMA)</i>, 2005, pp. 32–36.
  short: 'T. Hemsel, M. Mracek, J. Twiefel, P. Vasiljev, J. Wallaschek, in: Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA),
    Yokohama, Japan, 2005, pp. 32–36.'
date_created: 2019-04-29T08:35:16Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
page: 32-36
place: Yokohama, Japan
publication: Proceedings of the First International Conference on Ultrasonic Motors
  and Actuators (IWOUMA)
status: public
title: Linear ultrasonic motors based on coupling of longitudinal vibrations
type: conference
user_id: '55222'
year: '2005'
...
---
_id: '9530'
author:
- first_name: Maik
  full_name: Mracek, Maik
  last_name: Mracek
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Mracek M, Hemsel T, Wallaschek J. Parallel Operation of Ultrasonic Linear
    Motors. In: <i>Proceedings of the First International Conference on Ultrasonic
    Motors and Actuators (IWOUMA)</i>. Yokohama, Japan; 2005:23-24.'
  apa: Mracek, M., Hemsel, T., &#38; Wallaschek, J. (2005). Parallel Operation of
    Ultrasonic Linear Motors. In <i>Proceedings of the First International Conference
    on Ultrasonic Motors and Actuators (IWOUMA)</i> (pp. 23–24). Yokohama, Japan.
  bibtex: '@inproceedings{Mracek_Hemsel_Wallaschek_2005, place={Yokohama, Japan},
    title={Parallel Operation of Ultrasonic Linear Motors}, booktitle={Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)},
    author={Mracek, Maik and Hemsel, Tobias and Wallaschek, Jörg}, year={2005}, pages={23–24}
    }'
  chicago: Mracek, Maik, Tobias Hemsel, and Jörg Wallaschek. “Parallel Operation of
    Ultrasonic Linear Motors.” In <i>Proceedings of the First International Conference
    on Ultrasonic Motors and Actuators (IWOUMA)</i>, 23–24. Yokohama, Japan, 2005.
  ieee: M. Mracek, T. Hemsel, and J. Wallaschek, “Parallel Operation of Ultrasonic
    Linear Motors,” in <i>Proceedings of the First International Conference on Ultrasonic
    Motors and Actuators (IWOUMA)</i>, 2005, pp. 23–24.
  mla: Mracek, Maik, et al. “Parallel Operation of Ultrasonic Linear Motors.” <i>Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>,
    2005, pp. 23–24.
  short: 'M. Mracek, T. Hemsel, J. Wallaschek, in: Proceedings of the First International
    Conference on Ultrasonic Motors and Actuators (IWOUMA), Yokohama, Japan, 2005,
    pp. 23–24.'
date_created: 2019-04-29T08:41:33Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
page: 23-24
place: Yokohama, Japan
publication: Proceedings of the First International Conference on Ultrasonic Motors
  and Actuators (IWOUMA)
status: public
title: Parallel Operation of Ultrasonic Linear Motors
type: conference
user_id: '55222'
year: '2005'
...
---
_id: '9531'
author:
- first_name: Jens
  full_name: Twiefel, Jens
  last_name: Twiefel
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Christopher
  full_name: Kauczor, Christopher
  last_name: Kauczor
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Twiefel J, Hemsel T, Kauczor C, Wallaschek J. Teaching Mechatronics to a Mixed
    Audience from Industry and University. In: <i>6th International Workshop on Research
    and Education in Mechatronics</i>. ; 2005:356-361.'
  apa: Twiefel, J., Hemsel, T., Kauczor, C., &#38; Wallaschek, J. (2005). Teaching
    Mechatronics to a Mixed Audience from Industry and University. In <i>6th International
    Workshop on Research and Education in Mechatronics</i> (pp. 356–361).
  bibtex: '@inproceedings{Twiefel_Hemsel_Kauczor_Wallaschek_2005, title={Teaching
    Mechatronics to a Mixed Audience from Industry and University}, booktitle={6th
    International Workshop on Research and Education in Mechatronics}, author={Twiefel,
    Jens and Hemsel, Tobias and Kauczor, Christopher and Wallaschek, Jörg}, year={2005},
    pages={356–361} }'
  chicago: Twiefel, Jens, Tobias Hemsel, Christopher Kauczor, and Jörg Wallaschek.
    “Teaching Mechatronics to a Mixed Audience from Industry and University.” In <i>6th
    International Workshop on Research and Education in Mechatronics</i>, 356–61,
    2005.
  ieee: J. Twiefel, T. Hemsel, C. Kauczor, and J. Wallaschek, “Teaching Mechatronics
    to a Mixed Audience from Industry and University,” in <i>6th International Workshop
    on Research and Education in Mechatronics</i>, 2005, pp. 356–361.
  mla: Twiefel, Jens, et al. “Teaching Mechatronics to a Mixed Audience from Industry
    and University.” <i>6th International Workshop on Research and Education in Mechatronics</i>,
    2005, pp. 356–61.
  short: 'J. Twiefel, T. Hemsel, C. Kauczor, J. Wallaschek, in: 6th International
    Workshop on Research and Education in Mechatronics, 2005, pp. 356–361.'
date_created: 2019-04-29T08:44:04Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
page: 356-361
popular_science: '1'
publication: 6th International Workshop on Research and Education in Mechatronics
status: public
title: Teaching Mechatronics to a Mixed Audience from Industry and University
type: conference
user_id: '55222'
year: '2005'
...
---
_id: '52642'
author:
- first_name: J.
  full_name: Wallaschek, J.
  last_name: Wallaschek
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: M.
  full_name: Mracek, M.
  last_name: Mracek
citation:
  ama: Wallaschek J, Hemsel T, Mracek M. <i>Proceedings of the 2nd International Workshop
    on Piezoelectric Materials and Applications in Acutators</i>. Vol Band 180.; 2005.
  apa: 'Wallaschek, J., Hemsel, T., &#38; Mracek, M. (2005). <i>Proceedings of the
    2nd International Workshop on Piezoelectric Materials and Applications in Acutators:
    Vol. Band 180</i>.'
  bibtex: '@book{Wallaschek_Hemsel_Mracek_2005, series={HNI-Verlagsschriftreihe},
    title={Proceedings of the 2nd International Workshop on Piezoelectric Materials
    and Applications in Acutators}, volume={Band 180}, author={Wallaschek, J. and
    Hemsel, Tobias and Mracek, M.}, year={2005}, collection={HNI-Verlagsschriftreihe}
    }'
  chicago: Wallaschek, J., Tobias Hemsel, and M. Mracek. <i>Proceedings of the 2nd
    International Workshop on Piezoelectric Materials and Applications in Acutators</i>.
    Vol. Band 180. HNI-Verlagsschriftreihe, 2005.
  ieee: J. Wallaschek, T. Hemsel, and M. Mracek, <i>Proceedings of the 2nd International
    Workshop on Piezoelectric Materials and Applications in Acutators</i>, vol. Band
    180. 2005.
  mla: Wallaschek, J., et al. <i>Proceedings of the 2nd International Workshop on
    Piezoelectric Materials and Applications in Acutators</i>. 2005.
  short: J. Wallaschek, T. Hemsel, M. Mracek, Proceedings of the 2nd International
    Workshop on Piezoelectric Materials and Applications in Acutators, 2005.
date_created: 2024-03-19T10:56:52Z
date_updated: 2024-04-02T09:48:17Z
department:
- _id: '26'
language:
- iso: eng
publication_identifier:
  isbn:
  - 3-935433-89-1
series_title: HNI-Verlagsschriftreihe
status: public
title: Proceedings of the 2nd International Workshop on Piezoelectric Materials and
  Applications in Acutators
type: misc
user_id: '5786'
volume: Band 180
year: '2005'
...
---
_id: '8951'
author:
- first_name: Bo
  full_name: Fu, Bo
  last_name: Fu
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Fu B, Hemsel T, Wallaschek J. Model-based Diagnosis for Sandwiched Ultrasonic
    Transducers. In: <i>Proceedings of the 18th International Congress on Acoustics,
    ICA</i>. ; 2004:4-9.'
  apa: Fu, B., Hemsel, T., &#38; Wallaschek, J. (2004). Model-based Diagnosis for
    Sandwiched Ultrasonic Transducers. In <i>Proceedings of the 18th International
    Congress on Acoustics, ICA</i> (pp. 4–9).
  bibtex: '@inproceedings{Fu_Hemsel_Wallaschek_2004, title={Model-based Diagnosis
    for Sandwiched Ultrasonic Transducers}, booktitle={Proceedings of the 18th International
    Congress on Acoustics, ICA}, author={Fu, Bo and Hemsel, Tobias and Wallaschek,
    Jörg}, year={2004}, pages={4–9} }'
  chicago: Fu, Bo, Tobias Hemsel, and Jörg Wallaschek. “Model-Based Diagnosis for
    Sandwiched Ultrasonic Transducers.” In <i>Proceedings of the 18th International
    Congress on Acoustics, ICA</i>, 4–9, 2004.
  ieee: B. Fu, T. Hemsel, and J. Wallaschek, “Model-based Diagnosis for Sandwiched
    Ultrasonic Transducers,” in <i>Proceedings of the 18th International Congress
    on Acoustics, ICA</i>, 2004, pp. 4–9.
  mla: Fu, Bo, et al. “Model-Based Diagnosis for Sandwiched Ultrasonic Transducers.”
    <i>Proceedings of the 18th International Congress on Acoustics, ICA</i>, 2004,
    pp. 4–9.
  short: 'B. Fu, T. Hemsel, J. Wallaschek, in: Proceedings of the 18th International
    Congress on Acoustics, ICA, 2004, pp. 4–9.'
date_created: 2019-04-15T12:06:00Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
page: 4-9
publication: Proceedings of the 18th International Congress on Acoustics, ICA
status: public
title: Model-based Diagnosis for Sandwiched Ultrasonic Transducers
type: conference
user_id: '55222'
year: '2004'
...
---
_id: '8953'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: 'Hemsel T. Linear piezoelectric motors and their application. In: <i>Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>.
    Seoul, Korea; 2004.'
  apa: Hemsel, T. (2004). Linear piezoelectric motors and their application. In <i>Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>.
    Seoul, Korea.
  bibtex: '@inproceedings{Hemsel_2004, place={Seoul, Korea}, title={Linear piezoelectric
    motors and their application}, booktitle={Proceedings of the First International
    Conference on Ultrasonic Motors and Actuators (IWOUMA)}, author={Hemsel, Tobias},
    year={2004} }'
  chicago: Hemsel, Tobias. “Linear Piezoelectric Motors and Their Application.” In
    <i>Proceedings of the First International Conference on Ultrasonic Motors and
    Actuators (IWOUMA)</i>. Seoul, Korea, 2004.
  ieee: T. Hemsel, “Linear piezoelectric motors and their application,” in <i>Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>,
    2004.
  mla: Hemsel, Tobias. “Linear Piezoelectric Motors and Their Application.” <i>Proceedings
    of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)</i>,
    2004.
  short: 'T. Hemsel, in: Proceedings of the First International Conference on Ultrasonic
    Motors and Actuators (IWOUMA), Seoul, Korea, 2004.'
date_created: 2019-04-15T12:09:06Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
place: Seoul, Korea
publication: Proceedings of the First International Conference on Ultrasonic Motors
  and Actuators (IWOUMA)
status: public
title: Linear piezoelectric motors and their application
type: conference
user_id: '55222'
year: '2004'
...
---
_id: '9519'
abstract:
- lang: eng
  text: 'Several positioning tasks demand translatory drive instead of rotary motion.
    To achieve drives that are capable e.g. to drive the sunroof of a car or to lift
    a car''s window, multiple miniaturized motors can be combined. But in this case
    many other questions arise: the electromechanical behavior of the individual motors
    differs slightly, the motor characteristics are strongly dependent on the driving
    parameters and the driven load, many applications need some extra power for special
    cases like overcoming higher forces periodically. Thus, the bundle of motors has
    to act well organized and controlled to get an optimized drive that is not oversized
    and costly.'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Maik
  full_name: Mracek, Maik
  last_name: Mracek
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
- first_name: Piotr
  full_name: Vasiljev, Piotr
  last_name: Vasiljev
citation:
  ama: 'Hemsel T, Mracek M, Wallaschek J, Vasiljev P. A novel approach for high power
    ultrasonic linear motors. In: <i>Ultrasonics Symposium, 2004 IEEE</i>. Vol 2.
    ; 2004:1161-1164. doi:<a href="https://doi.org/10.1109/ULTSYM.2004.1417988">10.1109/ULTSYM.2004.1417988</a>'
  apa: Hemsel, T., Mracek, M., Wallaschek, J., &#38; Vasiljev, P. (2004). A novel
    approach for high power ultrasonic linear motors. In <i>Ultrasonics Symposium,
    2004 IEEE</i> (Vol. 2, pp. 1161–1164). <a href="https://doi.org/10.1109/ULTSYM.2004.1417988">https://doi.org/10.1109/ULTSYM.2004.1417988</a>
  bibtex: '@inproceedings{Hemsel_Mracek_Wallaschek_Vasiljev_2004, title={A novel approach
    for high power ultrasonic linear motors}, volume={2}, DOI={<a href="https://doi.org/10.1109/ULTSYM.2004.1417988">10.1109/ULTSYM.2004.1417988</a>},
    number={Vol.2}, booktitle={Ultrasonics Symposium, 2004 IEEE}, author={Hemsel,
    Tobias and Mracek, Maik and Wallaschek, Jörg and Vasiljev, Piotr}, year={2004},
    pages={1161–1164} }'
  chicago: Hemsel, Tobias, Maik Mracek, Jörg Wallaschek, and Piotr Vasiljev. “A Novel
    Approach for High Power Ultrasonic Linear Motors.” In <i>Ultrasonics Symposium,
    2004 IEEE</i>, 2:1161–64, 2004. <a href="https://doi.org/10.1109/ULTSYM.2004.1417988">https://doi.org/10.1109/ULTSYM.2004.1417988</a>.
  ieee: T. Hemsel, M. Mracek, J. Wallaschek, and P. Vasiljev, “A novel approach for
    high power ultrasonic linear motors,” in <i>Ultrasonics Symposium, 2004 IEEE</i>,
    2004, vol. 2, no. Vol.2, pp. 1161–1164.
  mla: Hemsel, Tobias, et al. “A Novel Approach for High Power Ultrasonic Linear Motors.”
    <i>Ultrasonics Symposium, 2004 IEEE</i>, vol. 2, no. Vol.2, 2004, pp. 1161–64,
    doi:<a href="https://doi.org/10.1109/ULTSYM.2004.1417988">10.1109/ULTSYM.2004.1417988</a>.
  short: 'T. Hemsel, M. Mracek, J. Wallaschek, P. Vasiljev, in: Ultrasonics Symposium,
    2004 IEEE, 2004, pp. 1161–1164.'
date_created: 2019-04-29T08:12:06Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2004.1417988
intvolume: '         2'
issue: Vol.2
keyword:
- drives
- electromechanical effects
- linear motors
- ultrasonic motors
- car sunroof
- car window
- electromechanical behavior
- high power ultrasonic linear motors
- multiple miniaturized motors
- positioning tasks
- translatory drive
- Costs
- Electromagnetic forces
- Frequency
- Laboratories
- Manufacturing
- Mechatronics
- Micromotors
- Ultrasonic imaging
- Vibrations
- Voltage
language:
- iso: eng
page: 1161-1164
publication: Ultrasonics Symposium, 2004 IEEE
publication_identifier:
  issn:
  - 1051-0117
quality_controlled: '1'
status: public
title: A novel approach for high power ultrasonic linear motors
type: conference
user_id: '55222'
volume: 2
year: '2004'
...
---
_id: '9521'
author:
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Littmann W, Hemsel T, Wallaschek J. Design criteria for piezoelectric transformers.
    In: <i>Proceedings of the 18th International Congress on Acoustics</i>. Vol 4.
    ; 2004:2889-2892.'
  apa: Littmann, W., Hemsel, T., &#38; Wallaschek, J. (2004). Design criteria for
    piezoelectric transformers. In <i>Proceedings of the 18th International Congress
    on Acoustics</i> (Vol. 4, pp. 2889–2892).
  bibtex: '@inproceedings{Littmann_Hemsel_Wallaschek_2004, title={Design criteria
    for piezoelectric transformers}, volume={4}, booktitle={Proceedings of the 18th
    International Congress on Acoustics}, author={Littmann, Walter and Hemsel, Tobias
    and Wallaschek, Jörg}, year={2004}, pages={2889–2892} }'
  chicago: Littmann, Walter, Tobias Hemsel, and Jörg Wallaschek. “Design Criteria
    for Piezoelectric Transformers.” In <i>Proceedings of the 18th International Congress
    on Acoustics</i>, 4:2889–92, 2004.
  ieee: W. Littmann, T. Hemsel, and J. Wallaschek, “Design criteria for piezoelectric
    transformers,” in <i>Proceedings of the 18th International Congress on Acoustics</i>,
    2004, vol. 4, pp. 2889–2892.
  mla: Littmann, Walter, et al. “Design Criteria for Piezoelectric Transformers.”
    <i>Proceedings of the 18th International Congress on Acoustics</i>, vol. 4, 2004,
    pp. 2889–92.
  short: 'W. Littmann, T. Hemsel, J. Wallaschek, in: Proceedings of the 18th International
    Congress on Acoustics, 2004, pp. 2889–2892.'
date_created: 2019-04-29T08:15:55Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
intvolume: '         4'
language:
- iso: eng
page: 2889-2892
publication: Proceedings of the 18th International Congress on Acoustics
status: public
title: Design criteria for piezoelectric transformers
type: conference
user_id: '55222'
volume: 4
year: '2004'
...
---
_id: '9522'
author:
- first_name: Maik
  full_name: Mracek, Maik
  last_name: Mracek
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: 'Mracek M, Wallaschek J, Hemsel T. Self configuration of miniature ultrasonic
    linear motors. In: <i>Proceedings of the 18th International Congress on Acoustics</i>.
    ; 2004:417-420.'
  apa: Mracek, M., Wallaschek, J., &#38; Hemsel, T. (2004). Self configuration of
    miniature ultrasonic linear motors. In <i>Proceedings of the 18th International
    Congress on Acoustics</i> (pp. 417–420).
  bibtex: '@inproceedings{Mracek_Wallaschek_Hemsel_2004, title={Self configuration
    of miniature ultrasonic linear motors}, booktitle={Proceedings of the 18th International
    Congress on Acoustics}, author={Mracek, Maik and Wallaschek, Jörg and Hemsel,
    Tobias}, year={2004}, pages={417–420} }'
  chicago: Mracek, Maik, Jörg Wallaschek, and Tobias Hemsel. “Self Configuration of
    Miniature Ultrasonic Linear Motors.” In <i>Proceedings of the 18th International
    Congress on Acoustics</i>, 417–20, 2004.
  ieee: M. Mracek, J. Wallaschek, and T. Hemsel, “Self configuration of miniature
    ultrasonic linear motors,” in <i>Proceedings of the 18th International Congress
    on Acoustics</i>, 2004, pp. 417–420.
  mla: Mracek, Maik, et al. “Self Configuration of Miniature Ultrasonic Linear Motors.”
    <i>Proceedings of the 18th International Congress on Acoustics</i>, 2004, pp.
    417–20.
  short: 'M. Mracek, J. Wallaschek, T. Hemsel, in: Proceedings of the 18th International
    Congress on Acoustics, 2004, pp. 417–420.'
date_created: 2019-04-29T08:17:15Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
page: 417-420
publication: Proceedings of the 18th International Congress on Acoustics
status: public
title: Self configuration of miniature ultrasonic linear motors
type: conference
user_id: '55222'
year: '2004'
...
---
_id: '9524'
author:
- first_name: Bo
  full_name: Fu, Bo
  last_name: Fu
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Fu B, Hemsel T, Wallaschek J. Model-based Diagnosis for Sandwiched Ultrasonic
    Transducers. In: <i>Proceedings of the 18th International Congress on Acoustics,
    ICA</i>. ; 2004:4-9.'
  apa: Fu, B., Hemsel, T., &#38; Wallaschek, J. (2004). Model-based Diagnosis for
    Sandwiched Ultrasonic Transducers. In <i>Proceedings of the 18th International
    Congress on Acoustics, ICA</i> (pp. 4–9).
  bibtex: '@inproceedings{Fu_Hemsel_Wallaschek_2004, title={Model-based Diagnosis
    for Sandwiched Ultrasonic Transducers}, booktitle={Proceedings of the 18th International
    Congress on Acoustics, ICA}, author={Fu, Bo and Hemsel, Tobias and Wallaschek,
    Jörg}, year={2004}, pages={4–9} }'
  chicago: Fu, Bo, Tobias Hemsel, and Jörg Wallaschek. “Model-Based Diagnosis for
    Sandwiched Ultrasonic Transducers.” In <i>Proceedings of the 18th International
    Congress on Acoustics, ICA</i>, 4–9, 2004.
  ieee: B. Fu, T. Hemsel, and J. Wallaschek, “Model-based Diagnosis for Sandwiched
    Ultrasonic Transducers,” in <i>Proceedings of the 18th International Congress
    on Acoustics, ICA</i>, 2004, pp. 4–9.
  mla: Fu, Bo, et al. “Model-Based Diagnosis for Sandwiched Ultrasonic Transducers.”
    <i>Proceedings of the 18th International Congress on Acoustics, ICA</i>, 2004,
    pp. 4–9.
  short: 'B. Fu, T. Hemsel, J. Wallaschek, in: Proceedings of the 18th International
    Congress on Acoustics, ICA, 2004, pp. 4–9.'
date_created: 2019-04-29T08:24:36Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
language:
- iso: eng
page: 4-9
publication: Proceedings of the 18th International Congress on Acoustics, ICA
status: public
title: Model-based Diagnosis for Sandwiched Ultrasonic Transducers
type: conference
user_id: '55222'
year: '2004'
...
---
_id: '8935'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Hemsel T, Wallaschek J. Modelling and Analysis of Piezoelectric Transformers.
    In: <i>Proceedings of the 5th International Congress of Intelligent Materials
    (ICIM)</i>. ; 2003.'
  apa: Hemsel, T., &#38; Wallaschek, J. (2003). Modelling and Analysis of Piezoelectric
    Transformers. In <i>Proceedings of the 5th International Congress of Intelligent
    Materials (ICIM)</i>.
  bibtex: '@inproceedings{Hemsel_Wallaschek_2003, title={Modelling and Analysis of
    Piezoelectric Transformers}, booktitle={Proceedings of the 5th International Congress
    of Intelligent Materials (ICIM)}, author={Hemsel, Tobias and Wallaschek, Jörg},
    year={2003} }'
  chicago: Hemsel, Tobias, and Jörg Wallaschek. “Modelling and Analysis of Piezoelectric
    Transformers.” In <i>Proceedings of the 5th International Congress of Intelligent
    Materials (ICIM)</i>, 2003.
  ieee: T. Hemsel and J. Wallaschek, “Modelling and Analysis of Piezoelectric Transformers,”
    in <i>Proceedings of the 5th International Congress of Intelligent Materials (ICIM)</i>,
    2003.
  mla: Hemsel, Tobias, and Jörg Wallaschek. “Modelling and Analysis of Piezoelectric
    Transformers.” <i>Proceedings of the 5th International Congress of Intelligent
    Materials (ICIM)</i>, 2003.
  short: 'T. Hemsel, J. Wallaschek, in: Proceedings of the 5th International Congress
    of Intelligent Materials (ICIM), 2003.'
date_created: 2019-04-15T10:36:27Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
publication: Proceedings of the 5th International Congress of Intelligent Materials
  (ICIM)
status: public
title: Modelling and Analysis of Piezoelectric Transformers
type: conference
user_id: '55222'
year: '2003'
...
---
_id: '8936'
author:
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Christopher
  full_name: Kauczor, Christopher
  last_name: Kauczor
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
- first_name: W
  full_name: Sinha, W
  last_name: Sinha
citation:
  ama: 'Littmann W, Hemsel T, Kauczor C, Wallaschek J, Sinha W. Load-adaptive phase-controller
    for resonant driven piezoelectric devices. In: <i>Proceedings of World Congress
    Ultrasonics</i>. ; 2003:547-550.'
  apa: Littmann, W., Hemsel, T., Kauczor, C., Wallaschek, J., &#38; Sinha, W. (2003).
    Load-adaptive phase-controller for resonant driven piezoelectric devices. In <i>Proceedings
    of World Congress Ultrasonics</i> (pp. 547–550).
  bibtex: '@inproceedings{Littmann_Hemsel_Kauczor_Wallaschek_Sinha_2003, title={Load-adaptive
    phase-controller for resonant driven piezoelectric devices}, booktitle={Proceedings
    of World Congress Ultrasonics}, author={Littmann, Walter and Hemsel, Tobias and
    Kauczor, Christopher and Wallaschek, Jörg and Sinha, W}, year={2003}, pages={547–550}
    }'
  chicago: Littmann, Walter, Tobias Hemsel, Christopher Kauczor, Jörg Wallaschek,
    and W Sinha. “Load-Adaptive Phase-Controller for Resonant Driven Piezoelectric
    Devices.” In <i>Proceedings of World Congress Ultrasonics</i>, 547–50, 2003.
  ieee: W. Littmann, T. Hemsel, C. Kauczor, J. Wallaschek, and W. Sinha, “Load-adaptive
    phase-controller for resonant driven piezoelectric devices,” in <i>Proceedings
    of World Congress Ultrasonics</i>, 2003, pp. 547–550.
  mla: Littmann, Walter, et al. “Load-Adaptive Phase-Controller for Resonant Driven
    Piezoelectric Devices.” <i>Proceedings of World Congress Ultrasonics</i>, 2003,
    pp. 547–50.
  short: 'W. Littmann, T. Hemsel, C. Kauczor, J. Wallaschek, W. Sinha, in: Proceedings
    of World Congress Ultrasonics, 2003, pp. 547–550.'
date_created: 2019-04-15T10:38:04Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
page: 547-550
publication: Proceedings of World Congress Ultrasonics
status: public
title: Load-adaptive phase-controller for resonant driven piezoelectric devices
type: conference
user_id: '55222'
year: '2003'
...
---
_id: '8926'
abstract:
- lang: eng
  text: Piezoelectric transformers are well known since the publication of some patent
    applications at the end of the 1950s. But until today their only business use
    lies in the field of backlighting systems for LCDs. Due to key features as light-weight,
    flatness, high step-up at low volume and high efficiency piezoelectric transformers
    should be usable in a much broader range of applications. This contribution returns
    to mind their operating principle, shows how to model and to develop such devices
    as well as give some aspects for development trends that will lead to further
    applications.
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Hemsel T, Littmann W, Wallaschek J. Piezoelectric transformers - state of
    the art and development trends. In: <i>Ultrasonics Symposium, 2002. Proceedings.
    2002 IEEE</i>. Vol 1. ; 2002:645-648. doi:<a href="https://doi.org/10.1109/ULTSYM.2002.1193485">10.1109/ULTSYM.2002.1193485</a>'
  apa: Hemsel, T., Littmann, W., &#38; Wallaschek, J. (2002). Piezoelectric transformers
    - state of the art and development trends. In <i>Ultrasonics Symposium, 2002.
    Proceedings. 2002 IEEE</i> (Vol. 1, pp. 645–648). <a href="https://doi.org/10.1109/ULTSYM.2002.1193485">https://doi.org/10.1109/ULTSYM.2002.1193485</a>
  bibtex: '@inproceedings{Hemsel_Littmann_Wallaschek_2002, title={Piezoelectric transformers
    - state of the art and development trends}, volume={1}, DOI={<a href="https://doi.org/10.1109/ULTSYM.2002.1193485">10.1109/ULTSYM.2002.1193485</a>},
    number={vol.1}, booktitle={Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE},
    author={Hemsel, Tobias and Littmann, Walter and Wallaschek, Jörg}, year={2002},
    pages={645–648} }'
  chicago: Hemsel, Tobias, Walter Littmann, and Jörg Wallaschek. “Piezoelectric Transformers
    - State of the Art and Development Trends.” In <i>Ultrasonics Symposium, 2002.
    Proceedings. 2002 IEEE</i>, 1:645–48, 2002. <a href="https://doi.org/10.1109/ULTSYM.2002.1193485">https://doi.org/10.1109/ULTSYM.2002.1193485</a>.
  ieee: T. Hemsel, W. Littmann, and J. Wallaschek, “Piezoelectric transformers - state
    of the art and development trends,” in <i>Ultrasonics Symposium, 2002. Proceedings.
    2002 IEEE</i>, 2002, vol. 1, no. vol.1, pp. 645–648.
  mla: Hemsel, Tobias, et al. “Piezoelectric Transformers - State of the Art and Development
    Trends.” <i>Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE</i>, vol. 1, no.
    vol.1, 2002, pp. 645–48, doi:<a href="https://doi.org/10.1109/ULTSYM.2002.1193485">10.1109/ULTSYM.2002.1193485</a>.
  short: 'T. Hemsel, W. Littmann, J. Wallaschek, in: Ultrasonics Symposium, 2002.
    Proceedings. 2002 IEEE, 2002, pp. 645–648.'
date_created: 2019-04-15T10:18:15Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2002.1193485
intvolume: '         1'
issue: vol.1
keyword:
- piezoelectric devices
- reviews
- transformers
- backlighting systems
- flatness
- high efficiency piezoelectric transformers
- high step-up
- light-weight
- low volume
- operating principle
- piezoelectric transformers
- Circuits
- Costs
- Electromagnetic devices
- Electromagnetic fields
- Mechanical energy
- Piezoelectric materials
- Power electronics
- Switching frequency
- Transformers
- Vibrations
language:
- iso: eng
page: 645-648
publication: Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
publication_identifier:
  issn:
  - 1051-0117
status: public
title: Piezoelectric transformers - state of the art and development trends
type: conference
user_id: '55222'
volume: 1
year: '2002'
...
---
_id: '8927'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Hemsel T, Littmann W, Wallaschek J. Piezoelektrische Transformatoren - Bauformen
    und Modellierung. In: <i>47. Internationales Wissenschaftliches Kolloquium</i>.
    ; 2002.'
  apa: Hemsel, T., Littmann, W., &#38; Wallaschek, J. (2002). Piezoelektrische Transformatoren
    - Bauformen und Modellierung. In <i>47. Internationales Wissenschaftliches Kolloquium</i>.
  bibtex: '@inproceedings{Hemsel_Littmann_Wallaschek_2002, title={Piezoelektrische
    Transformatoren - Bauformen und Modellierung}, booktitle={47. Internationales
    Wissenschaftliches Kolloquium}, author={Hemsel, Tobias and Littmann, Walter and
    Wallaschek, Jörg}, year={2002} }'
  chicago: Hemsel, Tobias, Walter Littmann, and Jörg Wallaschek. “Piezoelektrische
    Transformatoren - Bauformen Und Modellierung.” In <i>47. Internationales Wissenschaftliches
    Kolloquium</i>, 2002.
  ieee: T. Hemsel, W. Littmann, and J. Wallaschek, “Piezoelektrische Transformatoren
    - Bauformen und Modellierung,” in <i>47. Internationales Wissenschaftliches Kolloquium</i>,
    2002.
  mla: Hemsel, Tobias, et al. “Piezoelektrische Transformatoren - Bauformen Und Modellierung.”
    <i>47. Internationales Wissenschaftliches Kolloquium</i>, 2002.
  short: 'T. Hemsel, W. Littmann, J. Wallaschek, in: 47. Internationales Wissenschaftliches
    Kolloquium, 2002.'
date_created: 2019-04-15T10:20:55Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
publication: 47. Internationales Wissenschaftliches Kolloquium
status: public
title: Piezoelektrische Transformatoren - Bauformen und Modellierung
type: conference
user_id: '55222'
year: '2002'
...
---
_id: '8925'
author:
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: 'Wallaschek J, Hemsel T. Piezoelektrische lineare Schwingungsantriebe. In:
    <i>Special Antriebstechnik</i>. VDI-Z/Konstruktion. ; 2001:70-71.'
  apa: Wallaschek, J., &#38; Hemsel, T. (2001). Piezoelektrische lineare Schwingungsantriebe.
    In <i>Special Antriebstechnik</i> (pp. 70–71).
  bibtex: '@inproceedings{Wallaschek_Hemsel_2001, series={VDI-Z/Konstruktion}, title={Piezoelektrische
    lineare Schwingungsantriebe}, booktitle={Special Antriebstechnik}, author={Wallaschek,
    Jörg and Hemsel, Tobias}, year={2001}, pages={70–71}, collection={VDI-Z/Konstruktion}
    }'
  chicago: Wallaschek, Jörg, and Tobias Hemsel. “Piezoelektrische Lineare Schwingungsantriebe.”
    In <i>Special Antriebstechnik</i>, 70–71. VDI-Z/Konstruktion, 2001.
  ieee: J. Wallaschek and T. Hemsel, “Piezoelektrische lineare Schwingungsantriebe,”
    in <i>Special Antriebstechnik</i>, 2001, pp. 70–71.
  mla: Wallaschek, Jörg, and Tobias Hemsel. “Piezoelektrische Lineare Schwingungsantriebe.”
    <i>Special Antriebstechnik</i>, 2001, pp. 70–71.
  short: 'J. Wallaschek, T. Hemsel, in: Special Antriebstechnik, 2001, pp. 70–71.'
date_created: 2019-04-15T10:15:58Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
page: 70-71
popular_science: '1'
publication: Special Antriebstechnik
series_title: VDI-Z/Konstruktion
status: public
title: Piezoelektrische lineare Schwingungsantriebe
type: conference
user_id: '55222'
year: '2001'
...
