---
_id: '9571'
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 at last controlled to get an optimized
drive that is not oversized and costly.'
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: Thomas
full_name: Sattel, Thomas
last_name: Sattel
- first_name: Piotr
full_name: Vasiljev, Piotr
last_name: Vasiljev
- first_name: Jörg
full_name: Wallaschek, Jörg
last_name: Wallaschek
citation:
ama: Mracek M, Hemsel T, Sattel T, Vasiljev P, Wallaschek J. Driving concepts for
bundled ultrasonic linear motors. Journal of Electroceramics. 2008;20(3-4):153-158.
doi:10.1007/s10832-007-9123-5
apa: Mracek, M., Hemsel, T., Sattel, T., Vasiljev, P., & Wallaschek, J. (2008).
Driving concepts for bundled ultrasonic linear motors. Journal of Electroceramics,
20(3–4), 153–158. https://doi.org/10.1007/s10832-007-9123-5
bibtex: '@article{Mracek_Hemsel_Sattel_Vasiljev_Wallaschek_2008, title={Driving
concepts for bundled ultrasonic linear motors}, volume={20}, DOI={10.1007/s10832-007-9123-5},
number={3–4}, journal={Journal of Electroceramics}, publisher={Springer US}, author={Mracek,
Maik and Hemsel, Tobias and Sattel, Thomas and Vasiljev, Piotr and Wallaschek,
Jörg}, year={2008}, pages={153–158} }'
chicago: 'Mracek, Maik, Tobias Hemsel, Thomas Sattel, Piotr Vasiljev, and Jörg Wallaschek.
“Driving Concepts for Bundled Ultrasonic Linear Motors.” Journal of Electroceramics
20, no. 3–4 (2008): 153–58. https://doi.org/10.1007/s10832-007-9123-5.'
ieee: M. Mracek, T. Hemsel, T. Sattel, P. Vasiljev, and J. Wallaschek, “Driving
concepts for bundled ultrasonic linear motors,” Journal of Electroceramics,
vol. 20, no. 3–4, pp. 153–158, 2008.
mla: Mracek, Maik, et al. “Driving Concepts for Bundled Ultrasonic Linear Motors.”
Journal of Electroceramics, vol. 20, no. 3–4, Springer US, 2008, pp. 153–58,
doi:10.1007/s10832-007-9123-5.
short: M. Mracek, T. Hemsel, T. Sattel, P. Vasiljev, J. Wallaschek, Journal of Electroceramics
20 (2008) 153–158.
date_created: 2019-04-29T12:27:25Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
doi: 10.1007/s10832-007-9123-5
intvolume: ' 20'
issue: 3-4
keyword:
- Ultrasonic linear motor
- High power
- Control
- Modeling
- Characteristics
language:
- iso: eng
page: 153-158
publication: Journal of Electroceramics
publication_identifier:
issn:
- 1385-3449
publisher: Springer US
quality_controlled: '1'
status: public
title: Driving concepts for bundled ultrasonic linear motors
type: journal_article
user_id: '55222'
volume: 20
year: '2008'
...
---
_id: '9539'
abstract:
- lang: eng
text: 'Classically, rotary motors with gears and spindle mechanisms are used to
achieve translatory motion. In means of miniaturization and weight reduction piezoelectric
linear motors are of interest. Several ultrasonic linear motors found in literature
base on the use of two different vibration modes. Most often flexural and longitudinal
modes are combined to achieve an elliptic micro-motion of surface points. This
micro-motion is converted to direct linear (or translatory) motion of a driven
slider. To gain high amplitudes of the micro-motion and thus having a powerful
motor, the ultrasonic vibrator should be driven near the eigenfrequency of its
modes. Additionally, low mechanical and electrical losses lead to increased efficiency
and large amplitude magnification in resonance. This demands a geometrical design
that fits the eigenfrequencies of the two different modes. A frequency-deviation
of only a few percent leads to non-acceptable disturbance of the elliptical motion.
Thus, the mechanical design of the vibrators has to be done very carefully. Within
this contribution we discuss different motor designs based on the coupling of
two the same longitudinal vibrations within one structure to generate an elliptic
motion of surface points. Different concepts based on piezoelectric plates and
Langevin transducers are compared. Benefits and drawbacks against the combination
of longitudinal and bending modes will be discussed. Numerical results of the
stator vibration as well as motor characteristics are validated by measurements
on different prototypes. '
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
citation:
ama: Hemsel T, Mracek M, Twiefel J, Vasiljev P. Piezoelectric linear motor concepts
based on coupling of longitudinal vibrations. Ultrasonics. 2006;44, Supplement(0):e591-e596.
doi:10.1016/j.ultras.2006.05.056
apa: Hemsel, T., Mracek, M., Twiefel, J., & Vasiljev, P. (2006). Piezoelectric
linear motor concepts based on coupling of longitudinal vibrations. Ultrasonics,
44, Supplement(0), e591–e596. https://doi.org/10.1016/j.ultras.2006.05.056
bibtex: '@article{Hemsel_Mracek_Twiefel_Vasiljev_2006, title={Piezoelectric linear
motor concepts based on coupling of longitudinal vibrations}, volume={44, Supplement},
DOI={10.1016/j.ultras.2006.05.056},
number={0}, journal={Ultrasonics}, author={Hemsel, Tobias and Mracek, Maik and
Twiefel, Jens and Vasiljev, Piotr}, year={2006}, pages={e591–e596} }'
chicago: 'Hemsel, Tobias, Maik Mracek, Jens Twiefel, and Piotr Vasiljev. “Piezoelectric
Linear Motor Concepts Based on Coupling of Longitudinal Vibrations.” Ultrasonics
44, Supplement, no. 0 (2006): e591–96. https://doi.org/10.1016/j.ultras.2006.05.056.'
ieee: T. Hemsel, M. Mracek, J. Twiefel, and P. Vasiljev, “Piezoelectric linear motor
concepts based on coupling of longitudinal vibrations,” Ultrasonics, vol.
44, Supplement, no. 0, pp. e591–e596, 2006.
mla: Hemsel, Tobias, et al. “Piezoelectric Linear Motor Concepts Based on Coupling
of Longitudinal Vibrations.” Ultrasonics, vol. 44, Supplement, no. 0, 2006,
pp. e591–96, doi:10.1016/j.ultras.2006.05.056.
short: T. Hemsel, M. Mracek, J. Twiefel, P. Vasiljev, Ultrasonics 44, Supplement
(2006) e591–e596.
date_created: 2019-04-29T09:03:50Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
doi: 10.1016/j.ultras.2006.05.056
issue: '0'
keyword:
- Piezoelectric linear motor
language:
- iso: eng
page: e591 - e596
publication: Ultrasonics
publication_identifier:
issn:
- 0041-624X
quality_controlled: '1'
status: public
title: Piezoelectric linear motor concepts based on coupling of longitudinal vibrations
type: journal_article
user_id: '55222'
volume: 44, Supplement
year: '2006'
...
---
_id: '9546'
abstract:
- lang: eng
text: Rotary ultrasonic motors have found broad industrial application in camera
lens drives and other systems. Linear ultrasonic motors in contrast have only
found limited applications. The main reason for the limited range of application
of these very attractive devices seems to be their small force and power range.
Attempts to build linear ultrasonic motors for high forces and high power applications
have not been truly successful yet. To achieve larger force and higher power,
multiple miniaturized motors can be combined. This approach, however, is not as
simple as it appears at first glance. The electromechanical behaviour of the individual
motors differs slightly due to manufacturing and assembly tolerances. The individual
motor characteristics are strongly dependent on the driving parameters (frequency,
voltage, temperature, pre-stress, etc.) and the driven load and the collective
behaviour of the swarm of motors is not just the linear superposition of the individual
drive's forces. Thus, the bundle of motors has to be synchronized and controlled
appropriately in order to obtain an optimized drive that is not oversized and
costly. We have investigated driving and control strategies of a set of linear
ultrasonic motors. Our contribution will be divided into three main parts. In
part I ultrasonic linear motors will be introduced. In part II driving strategies
for a single motor as well as for a bundle of motors will be presented. These
concepts will be verified by simulation results and experimental data. In part
III a simplified model for the motor's electromechanical behaviour will be given.
author:
- first_name: Maik
full_name: Mracek, Maik
last_name: Mracek
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
citation:
ama: Mracek M, Hemsel T. Synergetic driving concepts for bundled miniature ultrasonic
linear motors. Ultrasonics. 2006;44, Supplement:e597-e602. doi:10.1016/j.ultras.2006.05.201
apa: Mracek, M., & Hemsel, T. (2006). Synergetic driving concepts for bundled
miniature ultrasonic linear motors. Ultrasonics, 44, Supplement,
e597–e602. https://doi.org/10.1016/j.ultras.2006.05.201
bibtex: '@article{Mracek_Hemsel_2006, title={Synergetic driving concepts for bundled
miniature ultrasonic linear motors}, volume={44, Supplement}, DOI={10.1016/j.ultras.2006.05.201},
journal={Ultrasonics}, author={Mracek, Maik and Hemsel, Tobias}, year={2006},
pages={e597–e602} }'
chicago: 'Mracek, Maik, and Tobias Hemsel. “Synergetic Driving Concepts for Bundled
Miniature Ultrasonic Linear Motors.” Ultrasonics 44, Supplement (2006):
e597–602. https://doi.org/10.1016/j.ultras.2006.05.201.'
ieee: M. Mracek and T. Hemsel, “Synergetic driving concepts for bundled miniature
ultrasonic linear motors,” Ultrasonics, vol. 44, Supplement, pp. e597–e602,
2006.
mla: Mracek, Maik, and Tobias Hemsel. “Synergetic Driving Concepts for Bundled Miniature
Ultrasonic Linear Motors.” Ultrasonics, vol. 44, Supplement, 2006, pp.
e597–602, doi:10.1016/j.ultras.2006.05.201.
short: M. Mracek, T. Hemsel, Ultrasonics 44, Supplement (2006) e597–e602.
date_created: 2019-04-29T09:34:16Z
date_updated: 2022-01-06T07:04:16Z
department:
- _id: '151'
doi: 10.1016/j.ultras.2006.05.201
keyword:
- Ultrasonic linear motor
language:
- iso: eng
page: e597 - e602
publication: Ultrasonics
publication_identifier:
issn:
- 0041-624X
quality_controlled: '1'
status: public
title: Synergetic driving concepts for bundled miniature ultrasonic linear motors
type: journal_article
user_id: '55222'
volume: 44, Supplement
year: '2006'
...
---
_id: '8914'
abstract:
- lang: eng
text: 'Piezoelectric ultrasonic motors have been investigated for several years
and have already found their first practical applications. Their key feature is
that they are able to produce a high thrust force related to their volume. Beside
rotary drives like the travelling wave motor, linear drives have also been developed,
but only a few are presently commercially available. In the present paper, we
first describe the state of the art of linear piezoelectric motors. The motors
are characterized with respect to their no-load velocity, maximum thrust force,
efficiency and other technical properties. In the second part, we present a new
motor, which is judged to be capable of surpassing the characteristics of other
piezoelectric motors because of its unique design which allows the piezoelectric
drive elements to be pre-stressed in the direction of their polarization. The
piezoelectric elements convert energy using the longitudinal d33 effect which
allows an improved reliability, large vibration amplitudes and excellent piezoelectric
coupling. Energy loss by vibration damping is minimized, and the efficiency can
be improved significantly. Experimental results show that the motor characteristics
can be optimized for a particular task by choosing the appropriate operating parameters
such as exciting voltage, exciting frequency and normal force. '
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. Survey of the present state of the art of piezoelectric
linear motors. Ultrasonics. 2000;38:37-40. doi:10.1016/S0041-624X(99)00143-2
apa: Hemsel, T., & Wallaschek, J. (2000). Survey of the present state of the
art of piezoelectric linear motors. Ultrasonics, 38, 37–40. https://doi.org/10.1016/S0041-624X(99)00143-2
bibtex: '@article{Hemsel_Wallaschek_2000, title={Survey of the present state of
the art of piezoelectric linear motors}, volume={38}, DOI={10.1016/S0041-624X(99)00143-2},
journal={Ultrasonics}, author={Hemsel, Tobias and Wallaschek, Jörg}, year={2000},
pages={37–40} }'
chicago: 'Hemsel, Tobias, and Jörg Wallaschek. “Survey of the Present State of the
Art of Piezoelectric Linear Motors.” Ultrasonics 38 (2000): 37–40. https://doi.org/10.1016/S0041-624X(99)00143-2.'
ieee: T. Hemsel and J. Wallaschek, “Survey of the present state of the art of piezoelectric
linear motors,” Ultrasonics, vol. 38, pp. 37–40, 2000.
mla: Hemsel, Tobias, and Jörg Wallaschek. “Survey of the Present State of the Art
of Piezoelectric Linear Motors.” Ultrasonics, vol. 38, 2000, pp. 37–40,
doi:10.1016/S0041-624X(99)00143-2.
short: T. Hemsel, J. Wallaschek, Ultrasonics 38 (2000) 37–40.
date_created: 2019-04-15T09:42:32Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1016/S0041-624X(99)00143-2
intvolume: ' 38'
keyword:
- Linear motor
language:
- iso: eng
page: 37 - 40
publication: Ultrasonics
publication_identifier:
issn:
- 0041-624X
quality_controlled: '1'
status: public
title: Survey of the present state of the art of piezoelectric linear motors
type: journal_article
user_id: '55222'
volume: 38
year: '2000'
...
---
_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: Ultrasonics Symposium, 2000 IEEE. Vol 1. ; 2000:663-666
vol.1. doi:10.1109/ULTSYM.2000.922635'
apa: Hemsel, T., & Wallaschek, J. (2000). State of the art and development trends
of ultrasonic linear motors. In Ultrasonics Symposium, 2000 IEEE (Vol.
1, pp. 663–666 vol.1). https://doi.org/10.1109/ULTSYM.2000.922635
bibtex: '@inproceedings{Hemsel_Wallaschek_2000, title={State of the art and development
trends of ultrasonic linear motors}, volume={1}, DOI={10.1109/ULTSYM.2000.922635},
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 Ultrasonics Symposium, 2000 IEEE,
1:663–66 vol.1, 2000. https://doi.org/10.1109/ULTSYM.2000.922635.
ieee: T. Hemsel and J. Wallaschek, “State of the art and development trends of ultrasonic
linear motors,” in Ultrasonics Symposium, 2000 IEEE, 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.” Ultrasonics Symposium, 2000 IEEE, vol. 1,
2000, pp. 663–66 vol.1, doi:10.1109/ULTSYM.2000.922635.
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'
...