---
_id: '9991'
abstract:
- lang: eng
  text: Abstract:Since fine powders tend strongly to adhesion and agglomeration, their
    processing withconventional methods is difficult or impossible. Typically, in order
    to enable the handling of finepowders, chemicals are added to increase the flowability
    and reduce adhesion. This contributionshows that instead of additives also vibrations
    can be used to increase the flowability, to reduceadhesion and cohesion, and thus
    to enable or improve processes such as precision dosing, mixing,and transport
    of very fine powders. The methods for manipulating powder properties are describedin
    detail and prototypes for experimental studies are presented. It is shown that
    the handling of finepowders can be improved by using low-frequency, high-frequency
    or a combination of low- andhigh-frequency vibration.
author:
- first_name: Paul
  full_name: Dunst, Paul
  id: '22130'
  last_name: Dunst
- first_name: Peter
  full_name: Bornmann, Peter
  last_name: Bornmann
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: Dunst P, Bornmann P, Hemsel T, Sextro W. Vibration-Assisted Handling of Dry
    Fine Powders. <i>Actuators 2018, 7(2)</i>. 2018:1-11. doi:<a href="https://doi.org/10.3390/act7020018">10.3390/act7020018</a>
  apa: Dunst, P., Bornmann, P., Hemsel, T., &#38; Sextro, W. (2018). Vibration-Assisted
    Handling of Dry Fine Powders. <i>Actuators 2018, 7(2).</i>, 1–11. <a href="https://doi.org/10.3390/act7020018">https://doi.org/10.3390/act7020018</a>
  bibtex: '@article{Dunst_Bornmann_Hemsel_Sextro_2018, title={Vibration-Assisted Handling
    of Dry Fine Powders}, DOI={<a href="https://doi.org/10.3390/act7020018">10.3390/act7020018</a>},
    journal={Actuators 2018, 7(2).}, author={Dunst, Paul and Bornmann, Peter and Hemsel,
    Tobias and Sextro, Walter}, year={2018}, pages={1–11} }'
  chicago: Dunst, Paul, Peter Bornmann, Tobias Hemsel, and Walter Sextro. “Vibration-Assisted
    Handling of Dry Fine Powders.” <i>Actuators 2018, 7(2).</i>, 2018, 1–11. <a href="https://doi.org/10.3390/act7020018">https://doi.org/10.3390/act7020018</a>.
  ieee: P. Dunst, P. Bornmann, T. Hemsel, and W. Sextro, “Vibration-Assisted Handling
    of Dry Fine Powders,” <i>Actuators 2018, 7(2).</i>, pp. 1–11, 2018.
  mla: Dunst, Paul, et al. “Vibration-Assisted Handling of Dry Fine Powders.” <i>Actuators
    2018, 7(2).</i>, 2018, pp. 1–11, doi:<a href="https://doi.org/10.3390/act7020018">10.3390/act7020018</a>.
  short: P. Dunst, P. Bornmann, T. Hemsel, W. Sextro, Actuators 2018, 7(2). (2018)
    1–11.
date_created: 2019-05-27T10:16:16Z
date_updated: 2019-09-16T09:44:54Z
department:
- _id: '151'
doi: 10.3390/act7020018
keyword:
- powder handling
- flowability
- dosing
- transport
- mixing
- dispersion
- piezoelectricactuators
- vibrations
language:
- iso: eng
page: 1-11
publication: Actuators 2018, 7(2).
quality_controlled: '1'
status: public
title: Vibration-Assisted Handling of Dry Fine Powders
type: journal_article
user_id: '55222'
year: '2018'
...
---
_id: '9889'
abstract:
- lang: eng
  text: A measurement method is presented that combines the advantages of the multisine
    measurement technique with a prediction method for peak bending behavior. This
    combination allows the analysis of the dynamic behavior of mechanical structures
    at distinctly reduced measurement durations and has the advantage of reducing
    high excitation impacts on the structure under test.
author:
- first_name: Christian
  full_name: Sprock, Christian
  last_name: Sprock
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Sprock C, Sextro W. Time-efficient dynamic analysis of structures exhibiting
    nonlinear peak bending. In: <i>Instrumentation and Measurement Technology Conference
    (I2MTC) Proceedings, 2014 IEEE International</i>. ; 2014:320-324. doi:<a href="https://doi.org/10.1109/I2MTC.2014.6860760">10.1109/I2MTC.2014.6860760</a>'
  apa: Sprock, C., &#38; Sextro, W. (2014). Time-efficient dynamic analysis of structures
    exhibiting nonlinear peak bending. In <i>Instrumentation and Measurement Technology
    Conference (I2MTC) Proceedings, 2014 IEEE International</i> (pp. 320–324). <a
    href="https://doi.org/10.1109/I2MTC.2014.6860760">https://doi.org/10.1109/I2MTC.2014.6860760</a>
  bibtex: '@inproceedings{Sprock_Sextro_2014, title={Time-efficient dynamic analysis
    of structures exhibiting nonlinear peak bending}, DOI={<a href="https://doi.org/10.1109/I2MTC.2014.6860760">10.1109/I2MTC.2014.6860760</a>},
    booktitle={Instrumentation and Measurement Technology Conference (I2MTC) Proceedings,
    2014 IEEE International}, author={Sprock, Christian and Sextro, Walter}, year={2014},
    pages={320–324} }'
  chicago: Sprock, Christian, and Walter Sextro. “Time-Efficient Dynamic Analysis
    of Structures Exhibiting Nonlinear Peak Bending.” In <i>Instrumentation and Measurement
    Technology Conference (I2MTC) Proceedings, 2014 IEEE International</i>, 320–24,
    2014. <a href="https://doi.org/10.1109/I2MTC.2014.6860760">https://doi.org/10.1109/I2MTC.2014.6860760</a>.
  ieee: C. Sprock and W. Sextro, “Time-efficient dynamic analysis of structures exhibiting
    nonlinear peak bending,” in <i>Instrumentation and Measurement Technology Conference
    (I2MTC) Proceedings, 2014 IEEE International</i>, 2014, pp. 320–324.
  mla: Sprock, Christian, and Walter Sextro. “Time-Efficient Dynamic Analysis of Structures
    Exhibiting Nonlinear Peak Bending.” <i>Instrumentation and Measurement Technology
    Conference (I2MTC) Proceedings, 2014 IEEE International</i>, 2014, pp. 320–24,
    doi:<a href="https://doi.org/10.1109/I2MTC.2014.6860760">10.1109/I2MTC.2014.6860760</a>.
  short: 'C. Sprock, W. Sextro, in: Instrumentation and Measurement Technology Conference
    (I2MTC) Proceedings, 2014 IEEE International, 2014, pp. 320–324.'
date_created: 2019-05-20T13:25:22Z
date_updated: 2019-05-20T13:25:53Z
department:
- _id: '151'
doi: 10.1109/I2MTC.2014.6860760
keyword:
- bending
- dynamic testing
- measurement
- structural engineering
- vibrations
- measurement durations
- mechanical structures
- multisine measurement technique
- nonlinear peak bending behavior
- prediction method
- time-efficient dynamic analysis
- Heuristic algorithms
- Nonlinear systems
- Oscillators
- Time measurement
- Time-frequency analysis
- Vibrations
language:
- iso: eng
page: 320-324
publication: Instrumentation and Measurement Technology Conference (I2MTC) Proceedings,
  2014 IEEE International
status: public
title: Time-efficient dynamic analysis of structures exhibiting nonlinear peak bending
type: conference
user_id: '55222'
year: '2014'
...
---
_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: '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: '8915'
abstract:
- lang: eng
  text: Ultrasonic linear motors have now been investigated for several years. Their
    key features are high thrust forces related to their volume and good position-accuracy.
    This contribution consists of two main parts. In the first part we describe the
    state-of-the-art of linear piezoelectric motors. Characteristics like no-load
    velocity, maximum thrust force and other technical properties of commercially
    available devices will be reported as well as those of prototypes. In the second
    part we report an ongoing research and development project aiming at a linear
    piezoelectric motor, which is capable of surpassing some of the shortcomings of
    other piezoelectric motors
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. State of the art and development trends of ultrasonic
    linear motors. In: <i>Ultrasonics Symposium, 2000 IEEE</i>. Vol 1. ; 2000:663-666
    vol.1. doi:<a href="https://doi.org/10.1109/ULTSYM.2000.922635">10.1109/ULTSYM.2000.922635</a>'
  apa: Hemsel, T., &#38; Wallaschek, J. (2000). State of the art and development trends
    of ultrasonic linear motors. In <i>Ultrasonics Symposium, 2000 IEEE</i> (Vol.
    1, pp. 663–666 vol.1). <a href="https://doi.org/10.1109/ULTSYM.2000.922635">https://doi.org/10.1109/ULTSYM.2000.922635</a>
  bibtex: '@inproceedings{Hemsel_Wallaschek_2000, title={State of the art and development
    trends of ultrasonic linear motors}, volume={1}, DOI={<a href="https://doi.org/10.1109/ULTSYM.2000.922635">10.1109/ULTSYM.2000.922635</a>},
    booktitle={Ultrasonics Symposium, 2000 IEEE}, author={Hemsel, Tobias and Wallaschek,
    Jörg}, year={2000}, pages={663–666 vol.1} }'
  chicago: Hemsel, Tobias, and Jörg Wallaschek. “State of the Art and Development
    Trends of Ultrasonic Linear Motors.” In <i>Ultrasonics Symposium, 2000 IEEE</i>,
    1:663–66 vol.1, 2000. <a href="https://doi.org/10.1109/ULTSYM.2000.922635">https://doi.org/10.1109/ULTSYM.2000.922635</a>.
  ieee: T. Hemsel and J. Wallaschek, “State of the art and development trends of ultrasonic
    linear motors,” in <i>Ultrasonics Symposium, 2000 IEEE</i>, 2000, vol. 1, pp.
    663–666 vol.1.
  mla: Hemsel, Tobias, and Jörg Wallaschek. “State of the Art and Development Trends
    of Ultrasonic Linear Motors.” <i>Ultrasonics Symposium, 2000 IEEE</i>, vol. 1,
    2000, pp. 663–66 vol.1, doi:<a href="https://doi.org/10.1109/ULTSYM.2000.922635">10.1109/ULTSYM.2000.922635</a>.
  short: 'T. Hemsel, J. Wallaschek, in: Ultrasonics Symposium, 2000 IEEE, 2000, pp.
    663–666 vol.1.'
date_created: 2019-04-15T09:52:09Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2000.922635
intvolume: '         1'
keyword:
- linear motors
- ultrasonic motors
- linear piezoelectric motor
- maximum thrust force
- no-load velocity
- ultrasonic linear motor
- Electromagnetic devices
- Electromagnetic fields
- Frequency
- Friction
- Gears
- Materials science and technology
- Piezoelectric materials
- Research and development
- Vibrations
- Wheels
language:
- iso: eng
page: 663-666 vol.1
publication: Ultrasonics Symposium, 2000 IEEE
publication_identifier:
  issn:
  - 1051-0117
quality_controlled: '1'
status: public
title: State of the art and development trends of ultrasonic linear motors
type: conference
user_id: '55222'
volume: 1
year: '2000'
...