---
_id: '23891'
abstract:
- lang: eng
text: "Within a pre-post-design, we scrutinized the effects of normative augmented
feedback with positive and negative valence on learning motor accuracy, consistency
as well as automaticity by means of a dual-task paradigm. Forty-two healthy physical
education students were instructed to produce an arm-movement sequence as precisely
as possible with regard to three spatial reversal points within a time limit of
1200 ms. Twenty-eight practiced an elbow-extension-flexion-sequence (690 trials)
and 14 participants were tested as a control group without feedback practice.
Valence of normative feedback was systematically manipulated by means of reference
lines in a visual feedback display. The reference lines indicated performance
of a putative peer-group either to be superior (negative valence, Normative-Negative-Group)
or inferior (positive valence, Normative-Positive-Group) to participants’ actual
performance.\r\n\r\nAs a result, dual-task costs (n-back error) significantly
decreased solely in the Normative-Positive-Group, p = .003, η2p = .51, but in
no other group. Surprisingly, the mean absolute error for the motor task significantly
decreased (i.e., precision increased) only in the Normative-Negative-Group with
a large effect size, but in none of the other groups. Motor consistency was not
significantly affected by the valence of normative feedback. According to the
hypotheses of error-provoked attentional control, positive feedback-valence appears
to enhance skill automatization, while – unexpectedly – only negative feedback-valence
seems to enhance movement precision, which may be explained by effects of feedback
valence on the learners aspiration level."
article_type: original
author:
- first_name: Christina
full_name: Zobe, Christina
id: '9938'
last_name: Zobe
- first_name: Daniel
full_name: Krause, Daniel
last_name: Krause
- first_name: Klaus
full_name: Blischke, Klaus
last_name: Blischke
citation:
ama: Zobe C, Krause D, Blischke K. Dissociative effects of normative feedback on
motor automaticity and motor accuracy in learning an arm movement sequence. Human
Movement Science. 2019;66:529-540. doi:https://doi.org/10.1016/j.humov.2019.06.004
apa: Zobe, C., Krause, D., & Blischke, K. (2019). Dissociative effects of normative
feedback on motor automaticity and motor accuracy in learning an arm movement
sequence. Human Movement Science, 66, 529–540. https://doi.org/10.1016/j.humov.2019.06.004
bibtex: '@article{Zobe_Krause_Blischke_2019, title={Dissociative effects of normative
feedback on motor automaticity and motor accuracy in learning an arm movement
sequence}, volume={66}, DOI={https://doi.org/10.1016/j.humov.2019.06.004},
journal={Human Movement Science}, publisher={Elsevier}, author={Zobe, Christina
and Krause, Daniel and Blischke, Klaus}, year={2019}, pages={529–540} }'
chicago: 'Zobe, Christina, Daniel Krause, and Klaus Blischke. “Dissociative Effects
of Normative Feedback on Motor Automaticity and Motor Accuracy in Learning an
Arm Movement Sequence.” Human Movement Science 66 (2019): 529–40. https://doi.org/10.1016/j.humov.2019.06.004.'
ieee: 'C. Zobe, D. Krause, and K. Blischke, “Dissociative effects of normative feedback
on motor automaticity and motor accuracy in learning an arm movement sequence,”
Human Movement Science, vol. 66, pp. 529–540, 2019, doi: https://doi.org/10.1016/j.humov.2019.06.004.'
mla: Zobe, Christina, et al. “Dissociative Effects of Normative Feedback on Motor
Automaticity and Motor Accuracy in Learning an Arm Movement Sequence.” Human
Movement Science, vol. 66, Elsevier, 2019, pp. 529–40, doi:https://doi.org/10.1016/j.humov.2019.06.004.
short: C. Zobe, D. Krause, K. Blischke, Human Movement Science 66 (2019) 529–540.
date_created: 2021-09-07T14:13:23Z
date_updated: 2024-09-19T11:17:53Z
department:
- _id: '17'
- _id: '320'
doi: https://doi.org/10.1016/j.humov.2019.06.004
intvolume: ' 66'
keyword:
- Augmented feedback Automaticity Dual task Motor learning
language:
- iso: eng
main_file_link:
- url: https://www.sciencedirect.com/science/article/abs/pii/S0167945718307681?via%3Dihub
page: 529-540
publication: Human Movement Science
publication_status: published
publisher: Elsevier
status: public
title: Dissociative effects of normative feedback on motor automaticity and motor
accuracy in learning an arm movement sequence
type: journal_article
user_id: '9938'
volume: 66
year: '2019'
...
---
_id: '9876'
abstract:
- lang: eng
text: Piezoelectric inertia motors use the inertia of a body to drive it by means
of a friction contact in a series of small steps. It has been shown previously
in theoretical investigations that higher velocities and smoother movements can
be obtained if these steps do not contain phases of stiction (''stick-slip`` operation),
but use sliding friction only (''slip-slip`` operation). One very promising driving
option for such motors is the superposition of multiple sinusoidal signals or
harmonics. In this contribution, the theoretical results are validated experimentally.
In this context, a quick and reliable identification process for parameters describing
the friction contact is proposed. Additionally, the force generation potential
of inertia motors is investigated theoretically and experimentally. The experimental
results confirm the theoretical result that for a given maximum frequency, a signal
with a high fundamental frequency and consisting of two superposed sine waves
leads to the highest velocity and the smoothest motion, while the maximum motor
force is obtained with signals containing more harmonics. These results are of
fundamental importance for the further development of high-velocity piezoelectric
inertia motors.
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- 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: 'Hunstig M, Hemsel T, Sextro W. High-velocity operation of piezoelectric inertia
motors: experimental validation. Archive of Applied Mechanics. 2014:1-9.
doi:10.1007/s00419-014-0940-0'
apa: 'Hunstig, M., Hemsel, T., & Sextro, W. (2014). High-velocity operation
of piezoelectric inertia motors: experimental validation. Archive of Applied
Mechanics, 1–9. https://doi.org/10.1007/s00419-014-0940-0'
bibtex: '@article{Hunstig_Hemsel_Sextro_2014, title={High-velocity operation of
piezoelectric inertia motors: experimental validation}, DOI={10.1007/s00419-014-0940-0},
journal={Archive of Applied Mechanics}, publisher={Springer Berlin Heidelberg},
author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2014},
pages={1–9} }'
chicago: 'Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “High-Velocity Operation
of Piezoelectric Inertia Motors: Experimental Validation.” Archive of Applied
Mechanics, 2014, 1–9. https://doi.org/10.1007/s00419-014-0940-0.'
ieee: 'M. Hunstig, T. Hemsel, and W. Sextro, “High-velocity operation of piezoelectric
inertia motors: experimental validation,” Archive of Applied Mechanics,
pp. 1–9, 2014.'
mla: 'Hunstig, Matthias, et al. “High-Velocity Operation of Piezoelectric Inertia
Motors: Experimental Validation.” Archive of Applied Mechanics, Springer
Berlin Heidelberg, 2014, pp. 1–9, doi:10.1007/s00419-014-0940-0.'
short: M. Hunstig, T. Hemsel, W. Sextro, Archive of Applied Mechanics (2014) 1–9.
date_created: 2019-05-20T13:08:08Z
date_updated: 2019-05-20T13:08:43Z
department:
- _id: '151'
doi: 10.1007/s00419-014-0940-0
keyword:
- Inertia motor
- High velocity
- Stick-slip motor
- Slip-slip operation
- Friction parameter identification
language:
- iso: eng
page: 1-9
publication: Archive of Applied Mechanics
publication_identifier:
issn:
- 0939-1533
publisher: Springer Berlin Heidelberg
status: public
title: 'High-velocity operation of piezoelectric inertia motors: experimental validation'
type: journal_article
user_id: '55222'
year: '2014'
...
---
_id: '9802'
abstract:
- lang: eng
text: It has been shown previously that ``slip-slip'' operation of piezoelectric
inertia motors allows higher velocities and smoother movements than classic ``stick-slip''
operation. One very promising driving option is to use a superposition of multiple
sinusoidal signals. In this contribution, previous theoretical results are validated
experimentally. The results confirm the theoretical result that for a given maximum
frequency, usually defined by the actuator characteristics, a signal with high
fundamental frequency and consisting of two superposed sine waves leads to the
highest velocity and the smoothest motion. This result is of fundamental importance
for the further development of high-velocity piezoelectric inertia motors.
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- 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: 'Hunstig M, Hemsel T, Sextro W. High-Velocity Slip-Slip Operation of Piezoelectric
Inertia Motors - Experimental Validation. In: Proceedings of 10th International
Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting
Workshop. Hannover, Germany; 2013:16-18.'
apa: Hunstig, M., Hemsel, T., & Sextro, W. (2013). High-Velocity Slip-Slip Operation
of Piezoelectric Inertia Motors - Experimental Validation. In Proceedings of
10th International Workshop on Piezoelectric Materials and Applications and 8th
Energy Harvesting Workshop (pp. 16–18). Hannover, Germany.
bibtex: '@inproceedings{Hunstig_Hemsel_Sextro_2013, place={Hannover, Germany}, title={High-Velocity
Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental Validation},
booktitle={Proceedings of 10th International Workshop on Piezoelectric Materials
and Applications and 8th Energy Harvesting Workshop}, author={Hunstig, Matthias
and Hemsel, Tobias and Sextro, Walter}, year={2013}, pages={16–18} }'
chicago: Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “High-Velocity Slip-Slip
Operation of Piezoelectric Inertia Motors - Experimental Validation.” In Proceedings
of 10th International Workshop on Piezoelectric Materials and Applications and
8th Energy Harvesting Workshop, 16–18. Hannover, Germany, 2013.
ieee: M. Hunstig, T. Hemsel, and W. Sextro, “High-Velocity Slip-Slip Operation of
Piezoelectric Inertia Motors - Experimental Validation,” in Proceedings of
10th International Workshop on Piezoelectric Materials and Applications and 8th
Energy Harvesting Workshop, 2013, pp. 16–18.
mla: Hunstig, Matthias, et al. “High-Velocity Slip-Slip Operation of Piezoelectric
Inertia Motors - Experimental Validation.” Proceedings of 10th International
Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting
Workshop, 2013, pp. 16–18.
short: 'M. Hunstig, T. Hemsel, W. Sextro, in: Proceedings of 10th International
Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting
Workshop, Hannover, Germany, 2013, pp. 16–18.'
date_created: 2019-05-13T14:06:14Z
date_updated: 2022-01-06T07:04:21Z
department:
- _id: '151'
keyword:
- Piezoelectric inertia motor
- stick-slip motor
- driving signal
- velocity
- smoothness
language:
- iso: eng
page: 16-18
place: Hannover, Germany
publication: Proceedings of 10th International Workshop on Piezoelectric Materials
and Applications and 8th Energy Harvesting Workshop
status: public
title: High-Velocity Slip-Slip Operation of Piezoelectric Inertia Motors - Experimental
Validation
type: conference
user_id: '55222'
year: '2013'
...
---
_id: '9803'
abstract:
- lang: eng
text: Piezoelectric inertia motors, also known as stickslip drives or (smooth) impact
drives, use the inertia of a body to drive it by a friction contact in small steps,
in the majority of motors composed of a stick phase and a slip phase between the
friction partners. For optimizing inertia motors, it is important to understand
the friction contact correctly and to measure its properties appropriately. This
contribution presents experimental set-ups for measuring the contact force, friction
force and relative displacement in an actual inertia motor with a dry friction
contact and numerical simulations of the motor operation. The motor uses a pre-stressed
multilayer actuator with a displacement in the range of 20 $\mu$ m. It is shown
that a previously postulated condition for the applicability of simple kinetic
friction models is well fulfilled for the investigated motor. The friction contact
in the motor is simulated using different kinetic friction models. The input for
the friction models is the measured motion of the rod. The models qualitatively
reproduce the measured motion but show quantitative deviations varying with frequency.
These can be explained by vibrations of the driving rod that are experimentally
investigated.
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- 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: Hunstig M, Hemsel T, Sextro W. Modelling the friction contact in an inertia
motor. Journal of Intelligent Material Systems and Structures. 2013;24(11):1380-1391.
doi:10.1177/1045389X12474354
apa: Hunstig, M., Hemsel, T., & Sextro, W. (2013). Modelling the friction contact
in an inertia motor. Journal of Intelligent Material Systems and Structures,
24(11), 1380–1391. https://doi.org/10.1177/1045389X12474354
bibtex: '@article{Hunstig_Hemsel_Sextro_2013, title={Modelling the friction contact
in an inertia motor}, volume={24}, DOI={10.1177/1045389X12474354},
number={11}, journal={Journal of Intelligent Material Systems and Structures},
author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2013},
pages={1380–1391} }'
chicago: 'Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Modelling the Friction
Contact in an Inertia Motor.” Journal of Intelligent Material Systems and Structures
24, no. 11 (2013): 1380–91. https://doi.org/10.1177/1045389X12474354.'
ieee: M. Hunstig, T. Hemsel, and W. Sextro, “Modelling the friction contact in an
inertia motor,” Journal of Intelligent Material Systems and Structures,
vol. 24, no. 11, pp. 1380–1391, 2013.
mla: Hunstig, Matthias, et al. “Modelling the Friction Contact in an Inertia Motor.”
Journal of Intelligent Material Systems and Structures, vol. 24, no. 11,
2013, pp. 1380–91, doi:10.1177/1045389X12474354.
short: M. Hunstig, T. Hemsel, W. Sextro, Journal of Intelligent Material Systems
and Structures 24 (2013) 1380–1391.
date_created: 2019-05-13T14:08:01Z
date_updated: 2022-01-06T07:04:21Z
department:
- _id: '151'
doi: 10.1177/1045389X12474354
intvolume: ' 24'
issue: '11'
keyword:
- Actuator
- friction
- motor
- piezoelectric
language:
- iso: eng
page: 1380-1391
publication: Journal of Intelligent Material Systems and Structures
status: public
title: Modelling the friction contact in an inertia motor
type: journal_article
user_id: '55222'
volume: 24
year: '2013'
...
---
_id: '9804'
abstract:
- lang: eng
text: This contribution provides a systematic investigation and performance comparison
of different modes of operation for piezoelectric inertia drives. The movement
of these motors is classically assumed to consist of steps involving stiction
and sliding, resulting in the term ``stick-slip drives''. In the first part of
this contribution it has been found that using ideal driving signals, ``slip-slip''
operation without phases of stiction allows very high velocities, while the maximum
velocity is limited principally in stick-slip operation. In this part it is shown
that slip-slip operation is also suitable for use with real actuators, driven
with frequency-limited versions of the ideal signals presented in part I. The
motional performance of the motor as well as its wear and the required electric
power are investigated for operation with different signals. It is found that
for high velocity inertia motors it is recommendable to use actuators with large
stroke and to drive them with a signal consisting of two harmonics at a high fundamental
frequency, a result that is supported by similar setups implemented experimentally
by other authors. Using Lanczos' \sigma factors to calculate the frequency-limited
excitation signals instead of standard Fourier series additionally increases the
motor performance significantly. The results help motor designers to choose the
appropriate mode of operation and to optimise the motor parameters for their individual
applications.
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- 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: 'Hunstig M, Hemsel T, Sextro W. Stick-slip and slip-slip operation of piezoelectric
inertia drives - Part II: Frequency-limited excitation. Sensors and Actuators
A: Physical. 2013;200:79-89. doi:10.1016/j.sna.2012.11.043'
apa: 'Hunstig, M., Hemsel, T., & Sextro, W. (2013). Stick-slip and slip-slip
operation of piezoelectric inertia drives - Part II: Frequency-limited excitation.
Sensors and Actuators A: Physical, 200, 79–89. https://doi.org/10.1016/j.sna.2012.11.043'
bibtex: '@article{Hunstig_Hemsel_Sextro_2013, title={Stick-slip and slip-slip operation
of piezoelectric inertia drives - Part II: Frequency-limited excitation}, volume={200},
DOI={10.1016/j.sna.2012.11.043},
journal={Sensors and Actuators A: Physical}, author={Hunstig, Matthias and Hemsel,
Tobias and Sextro, Walter}, year={2013}, pages={79–89} }'
chicago: 'Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Stick-Slip and Slip-Slip
Operation of Piezoelectric Inertia Drives - Part II: Frequency-Limited Excitation.”
Sensors and Actuators A: Physical 200 (2013): 79–89. https://doi.org/10.1016/j.sna.2012.11.043.'
ieee: 'M. Hunstig, T. Hemsel, and W. Sextro, “Stick-slip and slip-slip operation
of piezoelectric inertia drives - Part II: Frequency-limited excitation,” Sensors
and Actuators A: Physical, vol. 200, pp. 79–89, 2013.'
mla: 'Hunstig, Matthias, et al. “Stick-Slip and Slip-Slip Operation of Piezoelectric
Inertia Drives - Part II: Frequency-Limited Excitation.” Sensors and Actuators
A: Physical, vol. 200, 2013, pp. 79–89, doi:10.1016/j.sna.2012.11.043.'
short: 'M. Hunstig, T. Hemsel, W. Sextro, Sensors and Actuators A: Physical 200
(2013) 79–89.'
date_created: 2019-05-13T14:09:31Z
date_updated: 2022-01-06T07:04:21Z
department:
- _id: '151'
doi: 10.1016/j.sna.2012.11.043
intvolume: ' 200'
keyword:
- Inertia motor
language:
- iso: eng
page: 79 - 89
publication: 'Sensors and Actuators A: Physical'
quality_controlled: '1'
status: public
title: 'Stick-slip and slip-slip operation of piezoelectric inertia drives - Part
II: Frequency-limited excitation'
type: journal_article
user_id: '55222'
volume: 200
year: '2013'
...
---
_id: '9805'
abstract:
- lang: eng
text: 'Piezoelectric inertia motors, also known as ``stick--slip drives'''', use
the inertia of a body to drive it in small steps by means of a friction contact.
While these steps are classically assumed to involve stiction and sliding, the
motors can also operate in ``slip--slip'''' mode without any phase of static friction.
This contribution provides a systematic investigation and performance comparison
of different stick--slip and slip--slip modes of operation. Different criteria
for comparing the motional performance of inertia motors are defined: Steady state
velocity, smoothness of motion, and start-up time. Using the example of a translational
inertia motor excited by an ideal displacement signal, it is found that the maximum
velocity reachable in stick--slip operation is limited principally, while continuous
slip--slip operation allows very high velocities. For the investigated driving
signals, the motor velocity is proportional to the square root of the actuator
stroke. The motor performance with these ideal signals defines an upper boundary
for the performance of real motors.'
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- 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: 'Hunstig M, Hemsel T, Sextro W. Stick-slip and slip-slip operation of piezoelectric
inertia drives - Part I: Ideal Excitation. Sensors and Actuators A: Physical.
2013;200:90-100. doi:10.1016/j.sna.2012.11.012'
apa: 'Hunstig, M., Hemsel, T., & Sextro, W. (2013). Stick-slip and slip-slip
operation of piezoelectric inertia drives - Part I: Ideal Excitation. Sensors
and Actuators A: Physical, 200, 90–100. https://doi.org/10.1016/j.sna.2012.11.012'
bibtex: '@article{Hunstig_Hemsel_Sextro_2013, title={Stick-slip and slip-slip operation
of piezoelectric inertia drives - Part I: Ideal Excitation.}, volume={200}, DOI={10.1016/j.sna.2012.11.012},
journal={Sensors and Actuators A: Physical}, author={Hunstig, Matthias and Hemsel,
Tobias and Sextro, Walter}, year={2013}, pages={90–100} }'
chicago: 'Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Stick-Slip and Slip-Slip
Operation of Piezoelectric Inertia Drives - Part I: Ideal Excitation.” Sensors
and Actuators A: Physical 200 (2013): 90–100. https://doi.org/10.1016/j.sna.2012.11.012.'
ieee: 'M. Hunstig, T. Hemsel, and W. Sextro, “Stick-slip and slip-slip operation
of piezoelectric inertia drives - Part I: Ideal Excitation.,” Sensors and Actuators
A: Physical, vol. 200, pp. 90–100, 2013.'
mla: 'Hunstig, Matthias, et al. “Stick-Slip and Slip-Slip Operation of Piezoelectric
Inertia Drives - Part I: Ideal Excitation.” Sensors and Actuators A: Physical,
vol. 200, 2013, pp. 90–100, doi:10.1016/j.sna.2012.11.012.'
short: 'M. Hunstig, T. Hemsel, W. Sextro, Sensors and Actuators A: Physical 200
(2013) 90–100.'
date_created: 2019-05-13T14:10:34Z
date_updated: 2022-01-06T07:04:21Z
department:
- _id: '151'
doi: 10.1016/j.sna.2012.11.012
intvolume: ' 200'
keyword:
- Inertia motor
- Stick--slip drive
- Mode of operation
- Performance indicator
- Velocity maximization
- Actuator stroke
language:
- iso: eng
page: 90 - 100
publication: 'Sensors and Actuators A: Physical'
quality_controlled: '1'
status: public
title: 'Stick-slip and slip-slip operation of piezoelectric inertia drives - Part
I: Ideal Excitation.'
type: journal_article
user_id: '55222'
volume: 200
year: '2013'
...
---
_id: '9784'
abstract:
- lang: eng
text: Piezoelectric inertia motors use the inertia of a body to drive it by means
of a friction contact in a series of small steps. These motors can operate in
``stick-slip'' or ``slip-slip'' mode, with the fundamental frequency of the driving
signal ranging from several Hertz to more than 100 kHz. To predict the motor characteristics,
a Coulomb friction model is sufficient in many cases, but numerical simulation
requires microscopic time steps. This contribution proposes a much faster simulation
technique using one evaluation per period of the excitation signal. The proposed
technique produces results very close to those of timestep simulation for ultrasonics
inertia motors and allows direct determination of the steady-state velocity of
an inertia motor from the motion profile of the driving part. Thus it is a useful
simulation technique which can be applied in both analysis and design of inertia
motors, especially for parameter studies and optimisation.
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Tobias
full_name: Hemsel, Tobias
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
last_name: Sextro
citation:
ama: 'Hunstig M, Hemsel T, Sextro W. An efficient simulation technique for high-frequency
piezoelectric inertia motors. In: Ultrasonics Symposium (IUS), 2012 IEEE International.
; 2012:277-280. doi:10.1109/ULTSYM.2012.0068'
apa: Hunstig, M., Hemsel, T., & Sextro, W. (2012). An efficient simulation technique
for high-frequency piezoelectric inertia motors. In Ultrasonics Symposium (IUS),
2012 IEEE International (pp. 277–280). https://doi.org/10.1109/ULTSYM.2012.0068
bibtex: '@inproceedings{Hunstig_Hemsel_Sextro_2012, title={An efficient simulation
technique for high-frequency piezoelectric inertia motors}, DOI={10.1109/ULTSYM.2012.0068},
booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Hunstig,
Matthias and Hemsel, Tobias and Sextro, Walter}, year={2012}, pages={277–280}
}'
chicago: Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “An Efficient Simulation
Technique for High-Frequency Piezoelectric Inertia Motors.” In Ultrasonics
Symposium (IUS), 2012 IEEE International, 277–80, 2012. https://doi.org/10.1109/ULTSYM.2012.0068.
ieee: M. Hunstig, T. Hemsel, and W. Sextro, “An efficient simulation technique for
high-frequency piezoelectric inertia motors,” in Ultrasonics Symposium (IUS),
2012 IEEE International, 2012, pp. 277–280.
mla: Hunstig, Matthias, et al. “An Efficient Simulation Technique for High-Frequency
Piezoelectric Inertia Motors.” Ultrasonics Symposium (IUS), 2012 IEEE International,
2012, pp. 277–80, doi:10.1109/ULTSYM.2012.0068.
short: 'M. Hunstig, T. Hemsel, W. Sextro, in: Ultrasonics Symposium (IUS), 2012
IEEE International, 2012, pp. 277–280.'
date_created: 2019-05-13T13:20:17Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2012.0068
keyword:
- friction
- ultrasonic motors
- Coulomb friction model
- efficient simulation technique
- friction contact
- high-frequency piezoelectric inertia motor
- motor characteristics prediction
- numerical simulation
- slip-slip mode
- stick-slip mode
- time-step simulation
- ultrasonic inertia motor
- Acceleration
- Acoustics
- Actuators
- Computational modeling
- Friction
- Numerical models
- Steady-state
language:
- iso: eng
page: 277-280
publication: Ultrasonics Symposium (IUS), 2012 IEEE International
publication_identifier:
issn:
- 1948-5719
quality_controlled: '1'
status: public
title: An efficient simulation technique for high-frequency piezoelectric inertia
motors
type: conference
user_id: '55222'
year: '2012'
...
---
_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: '6065'
abstract:
- lang: eng
text: 'In the direct parameter specification (DPS) mode of sensorimotor control,
response parameters can be specified by stimuli that are not consciously perceived
[Psychological Research/Psychologische Forschung 52 (1990) 207]. DPS is contingent
on the current intentions. The invisible stimuli can be processed for the purposes
of sensorimotor control only if they match the actual intentions, for example,
share task-relevant features. The present experiments explore whether attentional
capture by masked abrupt-onset stimuli is mediated via DPS. Participants judged
which of two visual targets appeared first. Masked primes preceded one of the
targets. The primes were either similar to the targets or not, in shape, or in
color. Target-like (task-relevant), but not distractor-like (task-irrelevant),
primes facilitated perceptual latencies of targets trailing at their positions.
Thus, the latency effects resulted from DPS of an attention shift, rather than
from bottom-up capture or from top-down '
author:
- first_name: Ingrid
full_name: Scharlau, Ingrid
id: '451'
last_name: Scharlau
orcid: 0000-0003-2364-9489
- first_name: Ulrich
full_name: Ansorge, Ulrich
last_name: Ansorge
citation:
ama: 'Scharlau I, Ansorge U. Direct parameter specification of an attention shift:
Evidence from perceptual latency priming. Vision Research. 2003;43(12):1351-1363.'
apa: 'Scharlau, I., & Ansorge, U. (2003). Direct parameter specification of
an attention shift: Evidence from perceptual latency priming. Vision Research,
43(12), 1351–1363.'
bibtex: '@article{Scharlau_Ansorge_2003, title={Direct parameter specification of
an attention shift: Evidence from perceptual latency priming.}, volume={43}, number={12},
journal={Vision Research}, author={Scharlau, Ingrid and Ansorge, Ulrich}, year={2003},
pages={1351–1363} }'
chicago: 'Scharlau, Ingrid, and Ulrich Ansorge. “Direct Parameter Specification
of an Attention Shift: Evidence from Perceptual Latency Priming.” Vision Research
43, no. 12 (2003): 1351–63.'
ieee: 'I. Scharlau and U. Ansorge, “Direct parameter specification of an attention
shift: Evidence from perceptual latency priming.,” Vision Research, vol.
43, no. 12, pp. 1351–1363, 2003.'
mla: 'Scharlau, Ingrid, and Ulrich Ansorge. “Direct Parameter Specification of an
Attention Shift: Evidence from Perceptual Latency Priming.” Vision Research,
vol. 43, no. 12, 2003, pp. 1351–63.'
short: I. Scharlau, U. Ansorge, Vision Research 43 (2003) 1351–1363.
date_created: 2018-12-10T07:01:37Z
date_updated: 2022-06-07T00:26:34Z
department:
- _id: '424'
extern: '1'
intvolume: ' 43'
issue: '12'
keyword:
- direct parameter specification
- DPS
- attention shift
- latency priming
- sensorimotor control
- stimuli
- task-relevant features
- visual targets
- color
- shape
- latency effects
- Adult
- Attention
- Discrimination (Psychology)
- Female
- Humans
- Judgment
- Male
- Perceptual Masking
- Reaction Time
- Visual Perception
- Attention
- Perceptual Motor Processes
- Response Latency
- Stimulus Onset
- Visual Stimulation
- Form and Shape Perception
- Sensory Adaptation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://kw.uni-paderborn.de/fileadmin/fakultaet/Institute/psychologie/Kognitive_Psychologie/Publikationen/ScharlauAnsorge2003VisResDPS.pdf
oa: '1'
page: 1351 - 1363
publication: Vision Research
publication_identifier:
issn:
- 0042-6989
publication_status: published
status: public
title: 'Direct parameter specification of an attention shift: Evidence from perceptual
latency priming.'
type: journal_article
user_id: '42165'
volume: 43
year: '2003'
...
---
_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'
...