---
_id: '9856'
author:
- first_name: Marco
full_name: Lenzen, Marco
last_name: Lenzen
- first_name: Andreas
full_name: Unger, Andreas
last_name: Unger
- first_name: Johannes
full_name: Wortberg, Johannes
last_name: Wortberg
citation:
ama: 'Lenzen M, Unger A, Wortberg J. 2PC-Recu-Module for energy recovery at hydraulic
driven injection molding machines. In: Cincinnati, Ohio, USA: SPE Antec; 2013.'
apa: 'Lenzen, M., Unger, A., & Wortberg, J. (2013). 2PC-Recu-Module for energy
recovery at hydraulic driven injection molding machines. Cincinnati, Ohio, USA:
SPE Antec.'
bibtex: '@inproceedings{Lenzen_Unger_Wortberg_2013, place={Cincinnati, Ohio, USA},
title={2PC-Recu-Module for energy recovery at hydraulic driven injection molding
machines}, publisher={SPE Antec}, author={Lenzen, Marco and Unger, Andreas and
Wortberg, Johannes}, year={2013} }'
chicago: 'Lenzen, Marco, Andreas Unger, and Johannes Wortberg. “2PC-Recu-Module
for Energy Recovery at Hydraulic Driven Injection Molding Machines.” Cincinnati,
Ohio, USA: SPE Antec, 2013.'
ieee: M. Lenzen, A. Unger, and J. Wortberg, “2PC-Recu-Module for energy recovery
at hydraulic driven injection molding machines,” 2013.
mla: Lenzen, Marco, et al. 2PC-Recu-Module for Energy Recovery at Hydraulic Driven
Injection Molding Machines. SPE Antec, 2013.
short: 'M. Lenzen, A. Unger, J. Wortberg, in: SPE Antec, Cincinnati, Ohio, USA,
2013.'
date_created: 2019-05-20T11:04:09Z
date_updated: 2019-09-16T11:16:53Z
department:
- _id: '151'
language:
- iso: eng
place: Cincinnati, Ohio, USA
publisher: SPE Antec
quality_controlled: '1'
status: public
title: 2PC-Recu-Module for energy recovery at hydraulic driven injection molding machines
type: conference
user_id: '55222'
year: '2013'
...
---
_id: '9858'
abstract:
- lang: eng
text: In this contribution, we introduce a multiobjective optimization used to calculate
safe optimal working points for a mechatronic system by including stochastic safety-critical
signals in an objective function. Our application example consists of a linear
drive for a rail-bound vehicle and an actuation unit. The linear drive's secondary
part is fixed; the primary part is vehicle-mounted and can be adjusted vertically
to account for deviations of the height of the secondary part. A small air gap
between both parts improves efficiency, but increases the risk of a collision
between the two parts. Using height data of the secondary part, a trajectory for
the vertical adjustment of the primary part is calculated. However, unexpected
deviations necessitate a readjustment of the air gap. The probability of such
unexpected height deviations can be calculated from the readjustment data. The
system is equipped with sensors to measure the air gap. Assuming that the sensor
noise is normally distributed, noise characteristics are determined. Using this
information and the probability distribution of unexpected height deviations,
the probability of a collision is determined.T he sensor noise and the probability
of a collision between both parts of the linear drive are included in the dynamical
model of the system. Using multiobjective optimization, pareto-optimal working
points for the controller of the air gap are obtained. By selecting an appropriate
working point, safe operation can be ensured.
author:
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Christina
full_name: Hölscher, Christina
last_name: Hölscher
- first_name: Michael
full_name: Menke, Michael
last_name: Menke
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Detmar
full_name: Zimmer, Detmar
last_name: Zimmer
citation:
ama: 'Meyer T, Hölscher C, Menke M, Sextro W, Zimmer D. Multiobjective Optimization
including Safety of Operation Applied to a Linear Drive System. In: Proc. Appl.
Math. Mech. Vol 13. ; 2013:483-484. doi:10.1002/pamm.201310234'
apa: Meyer, T., Hölscher, C., Menke, M., Sextro, W., & Zimmer, D. (2013). Multiobjective
Optimization including Safety of Operation Applied to a Linear Drive System. In
Proc. Appl. Math. Mech. (Vol. 13, pp. 483–484). https://doi.org/10.1002/pamm.201310234
bibtex: '@inproceedings{Meyer_Hölscher_Menke_Sextro_Zimmer_2013, title={Multiobjective
Optimization including Safety of Operation Applied to a Linear Drive System},
volume={13}, DOI={10.1002/pamm.201310234},
booktitle={Proc. Appl. Math. Mech.}, author={Meyer, Tobias and Hölscher, Christina
and Menke, Michael and Sextro, Walter and Zimmer, Detmar}, year={2013}, pages={483–484}
}'
chicago: Meyer, Tobias, Christina Hölscher, Michael Menke, Walter Sextro, and Detmar
Zimmer. “Multiobjective Optimization Including Safety of Operation Applied to
a Linear Drive System.” In Proc. Appl. Math. Mech., 13:483–84, 2013. https://doi.org/10.1002/pamm.201310234.
ieee: T. Meyer, C. Hölscher, M. Menke, W. Sextro, and D. Zimmer, “Multiobjective
Optimization including Safety of Operation Applied to a Linear Drive System,”
in Proc. Appl. Math. Mech., 2013, vol. 13, pp. 483–484.
mla: Meyer, Tobias, et al. “Multiobjective Optimization Including Safety of Operation
Applied to a Linear Drive System.” Proc. Appl. Math. Mech., vol. 13, 2013,
pp. 483–84, doi:10.1002/pamm.201310234.
short: 'T. Meyer, C. Hölscher, M. Menke, W. Sextro, D. Zimmer, in: Proc. Appl. Math.
Mech., 2013, pp. 483–484.'
date_created: 2019-05-20T11:10:20Z
date_updated: 2019-05-20T11:12:54Z
department:
- _id: '151'
doi: 10.1002/pamm.201310234
intvolume: ' 13'
language:
- iso: eng
page: 483-484
publication: Proc. Appl. Math. Mech.
status: public
title: Multiobjective Optimization including Safety of Operation Applied to a Linear
Drive System
type: conference
user_id: '55222'
volume: 13
year: '2013'
...
---
_id: '9859'
abstract:
- lang: eng
text: Self-optimizing mechatronic systems allow the adaptation of the system's behavior
to the current situation. This can be used to actively adapt the behavior to the
current degradation state of the system or of some of its components. To this
end, the Multi-Level Dependability Concept has been developed. In this contribution,
we show how the Multi-Level Dependability Concept has been applied to the active
suspension module of an innovative rail-bound vehicle. For this module, the usage
of control reconfiguration, which is a novel approach to exploit complex redundancy
systems, is required. We show that by combining self-optimization with the possibilities
given by control reconfiguration, the dependability of a complex mechatronic system
can be greatly improved.
author:
- first_name: Tobias
full_name: Meyer , Tobias
last_name: 'Meyer '
- first_name: Jan
full_name: Henning Keßler, Jan
last_name: Henning Keßler
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Ansgar
full_name: Trächtler, Ansgar
last_name: Trächtler
citation:
ama: 'Meyer T, Henning Keßler J, Sextro W, Trächtler A. Increasing Intelligent
Systems’ Reliability by Using Reconfiguration. In: Proceedings of the Annual
Reliability and Maintainability Symposium (RAMS). Orlando, FL; 2013. doi:10.1109/RAMS.2013.6517636'
apa: Meyer , T., Henning Keßler, J., Sextro, W., & Trächtler, A. (2013). Increasing
Intelligent Systems’ Reliability by Using Reconfiguration. In Proceedings of
the Annual Reliability and Maintainability Symposium (RAMS). Orlando, FL.
https://doi.org/10.1109/RAMS.2013.6517636
bibtex: '@inproceedings{Meyer _Henning Keßler_Sextro_Trächtler_2013, place={Orlando,
FL}, title={Increasing Intelligent Systems’ Reliability by Using Reconfiguration},
DOI={10.1109/RAMS.2013.6517636},
booktitle={Proceedings of the Annual Reliability and Maintainability Symposium
(RAMS)}, author={Meyer , Tobias and Henning Keßler, Jan and Sextro, Walter and
Trächtler, Ansgar}, year={2013} }'
chicago: Meyer , Tobias, Jan Henning Keßler, Walter Sextro, and Ansgar Trächtler.
“Increasing Intelligent Systems’ Reliability by Using Reconfiguration.” In Proceedings
of the Annual Reliability and Maintainability Symposium (RAMS). Orlando, FL,
2013. https://doi.org/10.1109/RAMS.2013.6517636.
ieee: T. Meyer , J. Henning Keßler, W. Sextro, and A. Trächtler, “Increasing Intelligent
Systems’ Reliability by Using Reconfiguration,” in Proceedings of the Annual
Reliability and Maintainability Symposium (RAMS), 2013.
mla: Meyer , Tobias, et al. “Increasing Intelligent Systems’ Reliability by Using
Reconfiguration.” Proceedings of the Annual Reliability and Maintainability
Symposium (RAMS), 2013, doi:10.1109/RAMS.2013.6517636.
short: 'T. Meyer , J. Henning Keßler, W. Sextro, A. Trächtler, in: Proceedings of
the Annual Reliability and Maintainability Symposium (RAMS), Orlando, FL, 2013.'
date_created: 2019-05-20T11:13:14Z
date_updated: 2019-09-16T11:22:45Z
department:
- _id: '151'
doi: 10.1109/RAMS.2013.6517636
language:
- iso: eng
place: Orlando, FL
publication: Proceedings of the Annual Reliability and Maintainability Symposium (RAMS)
quality_controlled: '1'
status: public
title: Increasing Intelligent Systems' Reliability by Using Reconfiguration
type: conference
user_id: '55222'
year: '2013'
...
---
_id: '9860'
abstract:
- lang: eng
text: Self-optimizing mechatronic systems offer possibilities well beyond those
of traditional mechatronic systems. Among these is the adaptation of the system
behavior to the current situation. To do so, they are able to choose from different
working points, which are pre-calculated using multiobjective optimization and
are thus Pareto-optimal with regard to the chosen objective functions. In this
contribution, a method is presented that allows to continuously control the system
degradation by adapting the behavior of a selfoptimizing system throughout its
complete lifetime. The current remaining useful lifetime is estimated and then
related to the spent lifetime and the desired useful lifetime. Using this information,
a reliability-related objective is prioritized using a closed-loop control, which
in turn is used to determine the working point of the self-optimizing system.
This way, the desired useful lifetime can be achieved. To exemplify the setup
of the controller structure and to demonstrate the adaptation of the system behavior,
a dynamic model of a clutch system is used. It can be seen that the closed loop
controller is able to correct for external perturbations, such as changed requirements,
as well as changed system parameters. This way, the modeled system is able to
achieve the desired lifetime reliably.
author:
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Christoph
full_name: Sondermann-Wölke, Christoph
last_name: Sondermann-Wölke
- first_name: James Kuria
full_name: Kimotho, James Kuria
last_name: Kimotho
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: Meyer T, Sondermann-Wölke C, Kimotho JK, Sextro W. Controlling the Remaining
Useful Lifetime using Self-Optimization. Chemical Engineering Transactions.
2013;33:625-630. doi:10.3303/CET1333105
apa: Meyer, T., Sondermann-Wölke, C., Kimotho, J. K., & Sextro, W. (2013). Controlling
the Remaining Useful Lifetime using Self-Optimization. Chemical Engineering
Transactions, 33, 625–630. https://doi.org/10.3303/CET1333105
bibtex: '@article{Meyer_Sondermann-Wölke_Kimotho_Sextro_2013, title={Controlling
the Remaining Useful Lifetime using Self-Optimization}, volume={33}, DOI={10.3303/CET1333105},
journal={Chemical Engineering Transactions}, author={Meyer, Tobias and Sondermann-Wölke,
Christoph and Kimotho, James Kuria and Sextro, Walter}, year={2013}, pages={625–630}
}'
chicago: 'Meyer, Tobias, Christoph Sondermann-Wölke, James Kuria Kimotho, and Walter
Sextro. “Controlling the Remaining Useful Lifetime Using Self-Optimization.” Chemical
Engineering Transactions 33 (2013): 625–30. https://doi.org/10.3303/CET1333105.'
ieee: T. Meyer, C. Sondermann-Wölke, J. K. Kimotho, and W. Sextro, “Controlling
the Remaining Useful Lifetime using Self-Optimization,” Chemical Engineering
Transactions, vol. 33, pp. 625–630, 2013.
mla: Meyer, Tobias, et al. “Controlling the Remaining Useful Lifetime Using Self-Optimization.”
Chemical Engineering Transactions, vol. 33, 2013, pp. 625–30, doi:10.3303/CET1333105.
short: T. Meyer, C. Sondermann-Wölke, J.K. Kimotho, W. Sextro, Chemical Engineering
Transactions 33 (2013) 625–630.
date_created: 2019-05-20T11:15:59Z
date_updated: 2019-09-16T11:20:50Z
department:
- _id: '151'
doi: 10.3303/CET1333105
intvolume: ' 33'
language:
- iso: eng
page: 625-630
publication: Chemical Engineering Transactions
quality_controlled: '1'
status: public
title: Controlling the Remaining Useful Lifetime using Self-Optimization
type: journal_article
user_id: '55222'
volume: 33
year: '2013'
...
---
_id: '9861'
abstract:
- lang: eng
text: Selbstoptimierende mechatronische Systeme bieten die Möglichkeit, ihr Verhalten
an geänderte Umgebungsbedingungen anzupassen. Dazu werden beispielsweise redundante
Strukturen genutzt, Reglerparameter angepasst oder Regelstrategien umgeschaltet.
Dies kann auch genutzt werden, um die Zuverlässigkeit des Systems zu steigern.
Zugleich entstehen aber durch die gesteigerte Komplexität dieser Systeme zusätzliche
Risiken. Um sicherzustellen, dass das System dennoch die gestellten Anforderungen
bezüglich der Zuverlässigkeit erfüllt, ist eine Modellierung des Gesamtsystems
und anschließende Zuverlässigkeitsbewertung notwendig. Dies ist aufgrund der situationsabhängigen
Verhaltensanpassung und des nicht intuitiv vorhersehbaren Verhaltens jedoch nicht
mit klassischen Verfahren möglich. Ein Modellierungsverfahren, das diese Eigenschaften
abbilden kann, ist LARES (LAnguage for REconfigurable dependable Systems). Die
Anwendung von LARES zur Bewertung der Zuverlässigkeit eines selbstoptimierenden
Systems wird anhand des Feder-Neige-Moduls gezeigt. Es ist eine Baugruppe der
Fahrzeuge eines innovativen Bahnsystems, der RailCabs. Das Feder-Neige-Modul dient
dazu, unerwünschte Schwingungen des Fahrzeugaufbaus zu minimieren. Mit LARES können
die Hardware-Komponenten des Systems, ihre in Abhängigkeit von der aktuellen Situation
veränderten Belastungen sowie die nicht-deterministische Verhaltensadaption modelliert
werden.
author:
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Christoph
full_name: Sondermann-Wölke, Christoph
last_name: Sondermann-Wölke
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Martin
full_name: Riedl, Martin
last_name: Riedl
- first_name: Alexander
full_name: Gouberman, Alexander
last_name: Gouberman
- first_name: Markus
full_name: Siegle, Markus
last_name: Siegle
citation:
ama: 'Meyer T, Sondermann-Wölke C, Sextro W, Riedl M, Gouberman A, Siegle M. Bewertung
der Zuverlässigkeit selbstoptimierender Systeme mit dem LARES-Framework. In: Gausemeier
J, Dumitrescu R, Rammig F, Schäfer W, Trächtler A, eds. 9. Paderborner Workshop
Entwurf Mechatronischer Systeme. HNI-Verlagsschriftenreihe. Paderborn: Heinz
Nixdorf Institut, Universität Paderborn; 2013:161-174.'
apa: 'Meyer, T., Sondermann-Wölke, C., Sextro, W., Riedl, M., Gouberman, A., &
Siegle, M. (2013). Bewertung der Zuverlässigkeit selbstoptimierender Systeme mit
dem LARES-Framework. In J. Gausemeier, R. Dumitrescu, F. Rammig, W. Schäfer, &
A. Trächtler (Eds.), 9. Paderborner Workshop Entwurf mechatronischer Systeme
(pp. 161–174). Paderborn: Heinz Nixdorf Institut, Universität Paderborn.'
bibtex: '@inproceedings{Meyer_Sondermann-Wölke_Sextro_Riedl_Gouberman_Siegle_2013,
place={Paderborn}, series={HNI-Verlagsschriftenreihe}, title={Bewertung der Zuverlässigkeit
selbstoptimierender Systeme mit dem LARES-Framework}, booktitle={9. Paderborner
Workshop Entwurf mechatronischer Systeme}, publisher={Heinz Nixdorf Institut,
Universität Paderborn}, author={Meyer, Tobias and Sondermann-Wölke, Christoph
and Sextro, Walter and Riedl, Martin and Gouberman, Alexander and Siegle, Markus},
editor={Gausemeier, Jürgen and Dumitrescu, Roman and Rammig, Franz and Schäfer,
Wilhelm and Trächtler, AnsgarEditors}, year={2013}, pages={161–174}, collection={HNI-Verlagsschriftenreihe}
}'
chicago: 'Meyer, Tobias, Christoph Sondermann-Wölke, Walter Sextro, Martin Riedl,
Alexander Gouberman, and Markus Siegle. “Bewertung Der Zuverlässigkeit Selbstoptimierender
Systeme Mit Dem LARES-Framework.” In 9. Paderborner Workshop Entwurf Mechatronischer
Systeme, edited by Jürgen Gausemeier, Roman Dumitrescu, Franz Rammig, Wilhelm
Schäfer, and Ansgar Trächtler, 161–74. HNI-Verlagsschriftenreihe. Paderborn: Heinz
Nixdorf Institut, Universität Paderborn, 2013.'
ieee: T. Meyer, C. Sondermann-Wölke, W. Sextro, M. Riedl, A. Gouberman, and M. Siegle,
“Bewertung der Zuverlässigkeit selbstoptimierender Systeme mit dem LARES-Framework,”
in 9. Paderborner Workshop Entwurf mechatronischer Systeme, 2013, pp. 161–174.
mla: Meyer, Tobias, et al. “Bewertung Der Zuverlässigkeit Selbstoptimierender Systeme
Mit Dem LARES-Framework.” 9. Paderborner Workshop Entwurf Mechatronischer Systeme,
edited by Jürgen Gausemeier et al., Heinz Nixdorf Institut, Universität Paderborn,
2013, pp. 161–74.
short: 'T. Meyer, C. Sondermann-Wölke, W. Sextro, M. Riedl, A. Gouberman, M. Siegle,
in: J. Gausemeier, R. Dumitrescu, F. Rammig, W. Schäfer, A. Trächtler (Eds.),
9. Paderborner Workshop Entwurf Mechatronischer Systeme, Heinz Nixdorf Institut,
Universität Paderborn, Paderborn, 2013, pp. 161–174.'
date_created: 2019-05-20T11:18:06Z
date_updated: 2019-09-30T08:10:44Z
department:
- _id: '151'
editor:
- first_name: Jürgen
full_name: Gausemeier, Jürgen
last_name: Gausemeier
- first_name: Roman
full_name: Dumitrescu, Roman
last_name: Dumitrescu
- first_name: Franz
full_name: Rammig, Franz
last_name: Rammig
- first_name: Wilhelm
full_name: Schäfer, Wilhelm
last_name: Schäfer
- first_name: Ansgar
full_name: Trächtler, Ansgar
last_name: Trächtler
language:
- iso: eng
page: 161-174
place: Paderborn
publication: 9. Paderborner Workshop Entwurf mechatronischer Systeme
publisher: Heinz Nixdorf Institut, Universität Paderborn
quality_controlled: '1'
series_title: HNI-Verlagsschriftenreihe
status: public
title: Bewertung der Zuverlässigkeit selbstoptimierender Systeme mit dem LARES-Framework
type: conference
user_id: '55222'
year: '2013'
...
---
_id: '9863'
abstract:
- lang: eng
text: The 9th International Workshop on Piezoelectric Materials and Applications
in Actuators (IWPMA 2012) was successfully held on 22–25 April 2012 in Hirosaki,
Japan. The general chair was Prof. M.K. Kurosawa from the Tokyo Institute of Technology,
Japan. In the past, Korea, Germany, Turkey, China, and USA have hosted the annual
conference, but this was the first time for the annual IWPMA conference to be
held in Japan. The IWPMA 2012 was organized as a joint symposium with JTTAS Smart
Actuator/Sensor Study Committee and ICAT International Actuator Symposium. More
than 150 people from the world (12 countries) participated and had fruitful discussions
with 138 presentations including 11 invited talks. In addition to piezoelectric
materials and piezoelectric actuators, the presentation topics were expanded to
include solid-state actuators, energy harvesting, multifunctional materials, and
other current important issues. It is our honor to pronounce that the “Sensors
and Actuators A” journal has published this special issue on the IWPMA 2012 including
the best 25 contributions. This issue covers the functional materials, such as
piezoelectric and magnetostrictive materials, and their applications. However,
for the innovative devices, various ideas concerning materials, mechanisms, designs,
fabrication process, and control-systems are also required to be organically combined.
From the view of this concept, we believe the published 25 papers can excite the
researcher's intellectual curiosity concerning these issues and can serve as the
driving force for further breakthroughs. Please enjoy the latest research results
selected by our editor team. Finally, we appreciate all participants in the IWPMA
2012 and the devoted reviewers for the publication. We hope that the papers in
this special issue will open up the next researches, which will be presented in
the future IWPMA conferences.
citation:
ama: Morita T, Hemsel T, Ijima T, et al., eds. Selected Papers from the 9th International
Workshop on Piezoelectric Materials and Applications in Actuators. Vol 200.
Elsevier; 2013:1-172. doi:10.1016/j.sna.2013.06.017
apa: 'Morita, T., Hemsel, T., Ijima, T., Jeong, D. Y., Kanda, T., Twiefel, J., …
Lallart, M. (Eds.). (2013). Selected Papers from the 9th International Workshop
on Piezoelectric Materials and Applications in Actuators. Sensors and Actuators
A: Physical (Vol. 200, pp. 1–172). Hirosaki: Elsevier. https://doi.org/10.1016/j.sna.2013.06.017'
bibtex: '@book{Morita_Hemsel_Ijima_Jeong_Kanda_Twiefel_Uzgur_Lallart_2013, title={Selected
Papers from the 9th International Workshop on Piezoelectric Materials and Applications
in Actuators}, volume={200}, DOI={10.1016/j.sna.2013.06.017},
journal={Sensors and Actuators A: Physical}, publisher={Elsevier}, year={2013},
pages={1–172} }'
chicago: 'Morita, Takeshi, Tobias Hemsel, T. Ijima, D. Y. Jeong, T. Kanda, Jens
Twiefel, E. Uzgur, and M. Lallart, eds. Selected Papers from the 9th International
Workshop on Piezoelectric Materials and Applications in Actuators. Sensors
and Actuators A: Physical. Vol. 200. Elsevier, 2013. https://doi.org/10.1016/j.sna.2013.06.017.'
ieee: T. Morita et al., Eds., Selected Papers from the 9th International
Workshop on Piezoelectric Materials and Applications in Actuators, vol. 200.
Elsevier, 2013, pp. 1–172.
mla: 'Morita, Takeshi, et al., editors. “Selected Papers from the 9th International
Workshop on Piezoelectric Materials and Applications in Actuators.” Sensors
and Actuators A: Physical, vol. 200, Elsevier, 2013, pp. 1–172, doi:10.1016/j.sna.2013.06.017.'
short: T. Morita, T. Hemsel, T. Ijima, D.Y. Jeong, T. Kanda, J. Twiefel, E. Uzgur,
M. Lallart, eds., Selected Papers from the 9th International Workshop on Piezoelectric
Materials and Applications in Actuators, Elsevier, 2013.
conference:
end_date: 2012-04-25
location: Hirosaki
name: International Workshop on Piezoelectric Materials and Applications in Actuators
start_date: 2012-04-22
date_created: 2019-05-20T11:56:03Z
date_updated: 2020-12-18T11:19:37Z
department:
- _id: '151'
doi: 10.1016/j.sna.2013.06.017
editor:
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: T.
full_name: Ijima, T.
last_name: Ijima
- first_name: D. Y.
full_name: Jeong, D. Y.
last_name: Jeong
- first_name: T.
full_name: Kanda, T.
last_name: Kanda
- first_name: Jens
full_name: Twiefel, Jens
last_name: Twiefel
- first_name: E.
full_name: Uzgur, E.
last_name: Uzgur
- first_name: M.
full_name: Lallart, M.
last_name: Lallart
intvolume: ' 200'
language:
- iso: eng
page: 1-172
publication: 'Sensors and Actuators A: Physical'
publisher: Elsevier
quality_controlled: '1'
status: public
title: Selected Papers from the 9th International Workshop on Piezoelectric Materials
and Applications in Actuators
type: journal_editor
user_id: '210'
volume: 200
year: '2013'
...
---
_id: '9866'
abstract:
- lang: eng
text: The hydrothermal method utilizes a solution-based chemical reaction to synthesize
piezoelectric thin films and powders. This method has a number of advantages,
such as low-temperature synthesis, and high purity and high quality of the product.
In order to promote hydrothermal reactions, we developed an ultrasonic assisted
hydrothermal method and confirmed that it produces dense and thick lead--zirconate--titanate
(PZT) films. In the hydrothermal method, a crystal growth process follows the
nucleation process. In this study, we verified that ultrasonic irradiation is
effective for the nucleation process, and there is an optimum irradiation period
to obtain thicker PZT films. With this optimization, a 9.2-$\mu$ m-thick PZT polycrystalline
film was obtained in a single deposition process. For this film, ultrasonic irradiation
was carried out from the beginning of the reaction for 18 h, followed by a 6 h
deposition without ultrasonic irradiation. These results indicate that the ultrasonic
irradiation mainly promotes the nucleation process.
author:
- first_name: Kanako
full_name: Ohta, Kanako
last_name: Ohta
- first_name: Gaku
full_name: Isobe, Gaku
last_name: Isobe
- first_name: Peter
full_name: Bornmann, Peter
last_name: Bornmann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
citation:
ama: Ohta K, Isobe G, Bornmann P, Hemsel T, Morita T. Study on optimizing ultrasonic
irradiation period for thick polycrystalline PZT film by hydrothermal method.
Ultrasonics. 2013;53(4):837-841. doi:10.1016/j.ultras.2012.12.003
apa: Ohta, K., Isobe, G., Bornmann, P., Hemsel, T., & Morita, T. (2013). Study
on optimizing ultrasonic irradiation period for thick polycrystalline PZT film
by hydrothermal method. Ultrasonics, 53(4), 837–841. https://doi.org/10.1016/j.ultras.2012.12.003
bibtex: '@article{Ohta_Isobe_Bornmann_Hemsel_Morita_2013, title={Study on optimizing
ultrasonic irradiation period for thick polycrystalline PZT film by hydrothermal
method}, volume={53}, DOI={10.1016/j.ultras.2012.12.003},
number={4}, journal={Ultrasonics}, author={Ohta, Kanako and Isobe, Gaku and Bornmann,
Peter and Hemsel, Tobias and Morita, Takeshi}, year={2013}, pages={837–841} }'
chicago: 'Ohta, Kanako, Gaku Isobe, Peter Bornmann, Tobias Hemsel, and Takeshi Morita.
“Study on Optimizing Ultrasonic Irradiation Period for Thick Polycrystalline PZT
Film by Hydrothermal Method.” Ultrasonics 53, no. 4 (2013): 837–41. https://doi.org/10.1016/j.ultras.2012.12.003.'
ieee: K. Ohta, G. Isobe, P. Bornmann, T. Hemsel, and T. Morita, “Study on optimizing
ultrasonic irradiation period for thick polycrystalline PZT film by hydrothermal
method,” Ultrasonics, vol. 53, no. 4, pp. 837–841, 2013.
mla: Ohta, Kanako, et al. “Study on Optimizing Ultrasonic Irradiation Period for
Thick Polycrystalline PZT Film by Hydrothermal Method.” Ultrasonics, vol.
53, no. 4, 2013, pp. 837–41, doi:10.1016/j.ultras.2012.12.003.
short: K. Ohta, G. Isobe, P. Bornmann, T. Hemsel, T. Morita, Ultrasonics 53 (2013)
837–841.
date_created: 2019-05-20T12:03:07Z
date_updated: 2019-09-16T10:54:27Z
department:
- _id: '151'
doi: 10.1016/j.ultras.2012.12.003
intvolume: ' 53'
issue: '4'
keyword:
- Piezoelectric material
language:
- iso: eng
page: 837 - 841
publication: Ultrasonics
publication_identifier:
issn:
- 0041-624X
quality_controlled: '1'
status: public
title: Study on optimizing ultrasonic irradiation period for thick polycrystalline
PZT film by hydrothermal method
type: journal_article
user_id: '55222'
volume: 53
year: '2013'
...
---
_id: '9867'
abstract:
- lang: eng
text: We report the piezoelectric properties of CuO-doped hydrothermal (K,Na)NbO3
ceramics that can be applied as hard-type lead-free piezoelectric ceramics. To
date, we have succeeded in synthesizing high-quality KNbO3 and NaNbO3 powders
by the hydrothermal method, which is based on an ionic reaction at high temperature
(around 210 $\,^{\circ}$C) and pressure. Increasing both the piezoelectric constant
d and the mechanical quality factor (Qm) is important for resonance-type piezoelectric
devices, such as ultrasonic motors and transformers. CuO doping into hydrothermal
(K,Na)NbO3 ceramics was examined to realize hard-type lead-free piezoelectric
ceramics. By doping with 1.2 mol \% CuO, Qm was increased and the dielectric loss
(tan δ) was decreased to 0.5\%. The grain size was also influenced by the amount
of CuO doping, which indicates that Qm is related to the density. To achieve a
higher Qm value, the grain size is required to be less than 5 µm; however, excessive
CuO doping leads to anomalous grain growth. Optimal piezoelectric properties were
obtained for 1.2 mol \% CuO-doped (K,Na)NbO3; k31 = 0.32, d31 = -44 pC/N, Qm (radial)
= 959, and tan δ= 0.5\%. These characteristics showed that CuO doping with hydrothermal
powders is effective for obtaining hard-type ceramics, and the mechanical quality
factor is more than ten times higher than that of nondoped hydrothermal (K,Na)NbO3
ceramics. Therefore, compared with the conventional solid-state method, we could
succeed in obtaining hard-type ceramics by a simple and short process.
author:
- first_name: Yuriko
full_name: Yokouchi, Yuriko
last_name: Yokouchi
- first_name: Takafumi
full_name: Maeda, Takafumi
last_name: Maeda
- first_name: Peter
full_name: Bornmann, Peter
last_name: Bornmann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
citation:
ama: Yokouchi Y, Maeda T, Bornmann P, Hemsel T, Morita T. Piezoelectric Properties
of CuO-Doped (K,Na)NbO3 Lead-Free Ceramics Synthesized with Hydrothermal Powders.
Japanese Journal of Applied Physics. 2013;52(7S). doi:10.7567/JJAP.52.07HB03
apa: Yokouchi, Y., Maeda, T., Bornmann, P., Hemsel, T., & Morita, T. (2013).
Piezoelectric Properties of CuO-Doped (K,Na)NbO3 Lead-Free Ceramics Synthesized
with Hydrothermal Powders. Japanese Journal of Applied Physics, 52(7S).
https://doi.org/10.7567/JJAP.52.07HB03
bibtex: '@article{Yokouchi_Maeda_Bornmann_Hemsel_Morita_2013, title={Piezoelectric
Properties of CuO-Doped (K,Na)NbO3 Lead-Free Ceramics Synthesized with Hydrothermal
Powders}, volume={52}, DOI={10.7567/JJAP.52.07HB03},
number={7S}, journal={Japanese Journal of Applied Physics}, author={Yokouchi,
Yuriko and Maeda, Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita,
Takeshi}, year={2013} }'
chicago: Yokouchi, Yuriko, Takafumi Maeda, Peter Bornmann, Tobias Hemsel, and Takeshi
Morita. “Piezoelectric Properties of CuO-Doped (K,Na)NbO3 Lead-Free Ceramics Synthesized
with Hydrothermal Powders.” Japanese Journal of Applied Physics 52, no.
7S (2013). https://doi.org/10.7567/JJAP.52.07HB03.
ieee: Y. Yokouchi, T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Piezoelectric
Properties of CuO-Doped (K,Na)NbO3 Lead-Free Ceramics Synthesized with Hydrothermal
Powders,” Japanese Journal of Applied Physics, vol. 52, no. 7S, 2013.
mla: Yokouchi, Yuriko, et al. “Piezoelectric Properties of CuO-Doped (K,Na)NbO3
Lead-Free Ceramics Synthesized with Hydrothermal Powders.” Japanese Journal
of Applied Physics, vol. 52, no. 7S, 2013, doi:10.7567/JJAP.52.07HB03.
short: Y. Yokouchi, T. Maeda, P. Bornmann, T. Hemsel, T. Morita, Japanese Journal
of Applied Physics 52 (2013).
date_created: 2019-05-20T12:06:04Z
date_updated: 2019-05-20T12:08:02Z
department:
- _id: '151'
doi: 10.7567/JJAP.52.07HB03
intvolume: ' 52'
issue: 7S
language:
- iso: eng
publication: Japanese Journal of Applied Physics
status: public
title: Piezoelectric Properties of CuO-Doped (K,Na)NbO3 Lead-Free Ceramics Synthesized
with Hydrothermal Powders
type: journal_article
user_id: '55222'
volume: 52
year: '2013'
...
---
_id: '9792'
abstract:
- lang: eng
text: "''Energy Harvester`` wandeln Umgebungsenergie in nützliche elektrische Energie.
Zur Berechnung der elektromechanischen Charakteristik eines piezoelektrischen
''Energy Harvesters\" wird ein auf Materialeigenschaften, Geometrie und Randbedingungen
basierendes analytisches Modell vorgestellt. Dieses dient als Basis für ein weiteres
Modell, welches den Betrieb eines autonomen Systems beschreibt. Die theoretischen
Arbeiten werden mit Laborversuchen validiert. Es zeigt sich, dass der piezoelektrische
Harvester im eingeschwungenen Zustand durch den Gleichrichtungsvorgang zwei abwechselnde
Lastzustände erfährt. Dies führt zu nichtlinearem Verhalten des Harvesters, besonders
wenn die angeschlossene Last eine geringe Impedanz hat. Desweiteren zeigen die
Ergebnisse, dass ein solches autonomes System effizient arbeitet, wenn es an eine
Last mit hoher Impedanz angeschlossen ist und bei einer der Antiresonanzfrequenz
des piezoelektrischen Harvesters entsprechenden Frequenz angeregt wird.Das Modell
des autonomen Systems wird auf ein System mit mehreren piezoelektrischen Wandlern
erweitert. Zur praktischen Implementierung eines solchen Systems wird eine Technik
zur Frequenzeinstellung eingeführt, da die optimalen Betriebsfrequenzen der einzelnen
Wandler aufeinander abgestimmt werden müssen. Die Einstellung erfolgt, indem die
Entfernung zwischen zwei Permanentmagneten und damit deren Anziehungskraft, welche
die Steifigkeit des Harvesters beeinflusst, angepasst wird. Diese Technik zur
Frequenzeinstellung wird modelliert und experimentell validiert. Die Ergebnisse
zeigen, dass die Frequenzeinstellung mittels Permanentmagneten eine einfache und
zugleich effektive Lösung für das Problem der Frequenzanpassung piezoelektrischer
''Energy Harvester\" darstellt. \r\nEnergy harvesters convert ambient energy into
useful electrical energy. An analytical model for calculating the electromechanical
characteristics of a piezoelectric harvester based on the material properties,
geometry and boundary conditions is presented. This model is the basis for a further
model which describes the operation of an autonomous system powered by a piezoelectric
harvester. This theoretical work is validated by corresponding laboratory experiments.
It is found that, in steady-state operation, the piezoelectric harvester experiences
two alternating load conditions due to the rectification process. These load conditions
make the system behave nonlinearly, especially if the connected electrical load
is of low impedance. Furthermore, the results show that such an autonomous system
works efficiently if it is connected to a high impedance load and excited at a
frequency matching the anti-resonance frequency of the piezoelectric harvester.The
model of an autonomous system is extended to describe a system with multiple piezoelectric
transducers. For implementing such a system, the optimum operation frequencies
of the individual transducers must be adjusted. Therefore, a frequency tuning
method is introduced. The tuning is accomplished by adjusting the distance between
two permanent magnets and thus changing the attracting force between them in order
to affect the structural stiffness of the harvester. This tuning method is modeled
and validated experimentally. The results show that frequency tuning using permanent
magnets is a simple and effective solution for the frequency adjustment of piezoelectric
energy harvesters."
author:
- first_name: Waleed
full_name: Al-Ashtari, Waleed
last_name: Al-Ashtari
citation:
ama: Al-Ashtari W. Model Based Enhancement of an Autonomous System with a Piezoelectric
Harvester. Shaker; 2013.
apa: Al-Ashtari, W. (2013). Model based enhancement of an autonomous system with
a piezoelectric harvester. Shaker.
bibtex: '@book{Al-Ashtari_2013, title={Model based enhancement of an autonomous
system with a piezoelectric harvester}, publisher={Shaker}, author={Al-Ashtari,
Waleed}, year={2013} }'
chicago: Al-Ashtari, Waleed. Model Based Enhancement of an Autonomous System
with a Piezoelectric Harvester. Shaker, 2013.
ieee: W. Al-Ashtari, Model based enhancement of an autonomous system with a piezoelectric
harvester. Shaker, 2013.
mla: Al-Ashtari, Waleed. Model Based Enhancement of an Autonomous System with
a Piezoelectric Harvester. Shaker, 2013.
short: W. Al-Ashtari, Model Based Enhancement of an Autonomous System with a Piezoelectric
Harvester, Shaker, 2013.
date_created: 2019-05-13T13:47:14Z
date_updated: 2023-09-15T12:29:42Z
department:
- _id: '151'
language:
- iso: eng
publisher: Shaker
status: public
title: Model based enhancement of an autonomous system with a piezoelectric harvester
type: dissertation
user_id: '210'
year: '2013'
...
---
_id: '9781'
abstract:
- lang: eng
text: 'A piezoelectric energy harvester is an electromechanical device that converts
ambient mechanical vibration into electric power. Most existing vibration energy
harvesting devices operate effectively at a single frequency only, dictated by
the design of the device. This frequency must match the frequency of the host
structure vibration. However, real world structural vibrations rarely have a specific
constant frequency. Therefore, piezoelectric harvesters that generate usable power
across a range of exciting frequencies are required to make this technology commercially
viable. Currently known harvester tuning techniques have many limitations, in
particular they miss the ability to work during harvester operation and most often
cannot perform a precise tuning. This paper describes the design and testing of
a vibration energy harvester with tunable resonance frequency, wherein the tuning
is accomplished by changing the attraction force between two permanent magnets
by adjusting the distance between the magnets. This tuning technique allows the
natural frequency to be manipulated before and during operation of the harvester.
Furthermore the paper presents a physical description of the frequency tuning
effect. The experimental results achieved with a piezoelectric bimorph fit the
calculated results very well. The calculation and experimental results show that
using this tuning technique the natural frequency of the harvester can be varied
efficiently within a wide range: in the test setup, the natural frequency of the
piezoelectric bimorph could be increased by more than 70\%.'
author:
- first_name: Waleed
full_name: Al-Ashtari, Waleed
last_name: Al-Ashtari
- 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: Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Frequency tuning of piezoelectric
energy harvesters by magnetic force. Smart Materials and Structures. 2012;21(3):035019.
apa: Al-Ashtari, W., Hunstig, M., Hemsel, T., & Sextro, W. (2012). Frequency
tuning of piezoelectric energy harvesters by magnetic force. Smart Materials
and Structures, 21(3), 035019.
bibtex: '@article{Al-Ashtari_Hunstig_Hemsel_Sextro_2012, title={Frequency tuning
of piezoelectric energy harvesters by magnetic force}, volume={21}, number={3},
journal={Smart Materials and Structures}, author={Al-Ashtari, Waleed and Hunstig,
Matthias and Hemsel, Tobias and Sextro, Walter}, year={2012}, pages={035019} }'
chicago: 'Al-Ashtari, Waleed, Matthias Hunstig, Tobias Hemsel, and Walter Sextro.
“Frequency Tuning of Piezoelectric Energy Harvesters by Magnetic Force.” Smart
Materials and Structures 21, no. 3 (2012): 035019.'
ieee: W. Al-Ashtari, M. Hunstig, T. Hemsel, and W. Sextro, “Frequency tuning of
piezoelectric energy harvesters by magnetic force,” Smart Materials and Structures,
vol. 21, no. 3, p. 035019, 2012.
mla: Al-Ashtari, Waleed, et al. “Frequency Tuning of Piezoelectric Energy Harvesters
by Magnetic Force.” Smart Materials and Structures, vol. 21, no. 3, 2012,
p. 035019.
short: W. Al-Ashtari, M. Hunstig, T. Hemsel, W. Sextro, Smart Materials and Structures
21 (2012) 035019.
date_created: 2019-05-13T13:16:33Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
intvolume: ' 21'
issue: '3'
language:
- iso: eng
page: '035019'
publication: Smart Materials and Structures
quality_controlled: '1'
status: public
title: Frequency tuning of piezoelectric energy harvesters by magnetic force
type: journal_article
user_id: '55222'
volume: 21
year: '2012'
...
---
_id: '9782'
abstract:
- lang: eng
text: Piezoelectric structures are nowadays used in many different applications.
A better understanding of the influence of material properties and geometrical
design on the performance of these structures helps to develop piezoelectric structures
specifically designed for their application. Different equivalent circuits have
been introduced in the literature to investigate the behaviour of piezoelectric
transducers. The model parameters are usually determined from measurements covering
the characteristic frequencies of the piezoelectric transducer. This article introduces
an analytical technique for calculating the mechanical and electrical equivalent
system parameters and characteristic frequencies based on material properties
and geometry for a cantilever bimorph structure. The model is validated by measurements
using a cantilever bimorph and fits the experimental results better than previous
models. The model gives a full set of piezoelectric transducer parameters and
is therefore well suited for further theoretical investigations of piezoelectric
transducers for different applications. The results also show that even small
manufacturing tolerances have a considerable effect on the system parameters and
characteristic frequencies. This might lead to intolerable deviations, especially
in dynamic applications and should be avoided by careful design and production.
author:
- first_name: Waleed
full_name: Al-Ashtari, Waleed
last_name: Al-Ashtari
- 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: Al-Ashtari W, Hunstig M, Hemsel T, Sextro W. Analytical determination of characteristic
frequencies and equivalent circuit parameters of a piezoelectric bimorph. Journal
of Intelligent Material Systems and Structures. 2012;23(1):15-23. doi:10.1177/1045389X11430742
apa: Al-Ashtari, W., Hunstig, M., Hemsel, T., & Sextro, W. (2012). Analytical
determination of characteristic frequencies and equivalent circuit parameters
of a piezoelectric bimorph. Journal of Intelligent Material Systems and Structures,
23(1), 15–23. https://doi.org/10.1177/1045389X11430742
bibtex: '@article{Al-Ashtari_Hunstig_Hemsel_Sextro_2012, title={Analytical determination
of characteristic frequencies and equivalent circuit parameters of a piezoelectric
bimorph}, volume={23}, DOI={10.1177/1045389X11430742},
number={1}, journal={Journal of Intelligent Material Systems and Structures},
author={Al-Ashtari, Waleed and Hunstig, Matthias and Hemsel, Tobias and Sextro,
Walter}, year={2012}, pages={15–23} }'
chicago: 'Al-Ashtari, Waleed, Matthias Hunstig, Tobias Hemsel, and Walter Sextro.
“Analytical Determination of Characteristic Frequencies and Equivalent Circuit
Parameters of a Piezoelectric Bimorph.” Journal of Intelligent Material Systems
and Structures 23, no. 1 (2012): 15–23. https://doi.org/10.1177/1045389X11430742.'
ieee: W. Al-Ashtari, M. Hunstig, T. Hemsel, and W. Sextro, “Analytical determination
of characteristic frequencies and equivalent circuit parameters of a piezoelectric
bimorph,” Journal of Intelligent Material Systems and Structures, vol.
23, no. 1, pp. 15–23, 2012.
mla: Al-Ashtari, Waleed, et al. “Analytical Determination of Characteristic Frequencies
and Equivalent Circuit Parameters of a Piezoelectric Bimorph.” Journal of Intelligent
Material Systems and Structures, vol. 23, no. 1, 2012, pp. 15–23, doi:10.1177/1045389X11430742.
short: W. Al-Ashtari, M. Hunstig, T. Hemsel, W. Sextro, Journal of Intelligent Material
Systems and Structures 23 (2012) 15–23.
date_created: 2019-05-13T13:17:37Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1177/1045389X11430742
intvolume: ' 23'
issue: '1'
language:
- iso: eng
page: 15-23
publication: Journal of Intelligent Material Systems and Structures
quality_controlled: '1'
status: public
title: Analytical determination of characteristic frequencies and equivalent circuit
parameters of a piezoelectric bimorph
type: journal_article
user_id: '55222'
volume: 23
year: '2012'
...
---
_id: '9783'
abstract:
- lang: eng
text: To optimize the ultrasound irradiation for cavitation based ultrasound applications
like sonochemistry or ultrasound cleaning, the correlation between cavitation
intensity and the resulting effect on the process is of interest. Furthermore,
changing conditions like temperature and pressure result in varying acoustic properties
of the liquid. That might necessitate an adaption of the ultrasound irradiation.
To detect such changes during operation, process monitoring is desired. Labor
intensive processes, that might be carried out for several hours, also require
process monitoring to increase their reliability by detection of changes or malfunctions
during operation. In some applications cavitation detection and monitoring can
be achieved by the application of sensors in the sound field. Though the application
of sensors is possible, this necessitates modifications on the system and the
sensor might disturb the sound field. In other applications harsh, process conditions
prohibit the application of sensors in the sound field. Therefore alternative
techniques for cavitation detection and monitoring are desired. The applicability
of an external microphone and a self-sensing ultrasound transducer for cavitation
detection were experimentally investigated. Both methods were found to be suitable
and easily applicable.
author:
- 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
- first_name: Takafumi
full_name: Maeda, Takafumi
last_name: Maeda
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
citation:
ama: 'Bornmann P, Hemsel T, Sextro W, Maeda T, Morita T. Non-perturbing cavitation
detection / monitoring in sonochemical reactors. In: Ultrasonics Symposium
(IUS), 2012 IEEE International. ; 2012:1141-1144. doi:10.1109/ULTSYM.2012.0284'
apa: Bornmann, P., Hemsel, T., Sextro, W., Maeda, T., & Morita, T. (2012). Non-perturbing
cavitation detection / monitoring in sonochemical reactors. In Ultrasonics
Symposium (IUS), 2012 IEEE International (pp. 1141–1144). https://doi.org/10.1109/ULTSYM.2012.0284
bibtex: '@inproceedings{Bornmann_Hemsel_Sextro_Maeda_Morita_2012, title={Non-perturbing
cavitation detection / monitoring in sonochemical reactors}, DOI={10.1109/ULTSYM.2012.0284},
booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Bornmann,
Peter and Hemsel, Tobias and Sextro, Walter and Maeda, Takafumi and Morita, Takeshi},
year={2012}, pages={1141–1144} }'
chicago: Bornmann, Peter, Tobias Hemsel, Walter Sextro, Takafumi Maeda, and Takeshi
Morita. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.”
In Ultrasonics Symposium (IUS), 2012 IEEE International, 1141–44, 2012.
https://doi.org/10.1109/ULTSYM.2012.0284.
ieee: P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, and T. Morita, “Non-perturbing
cavitation detection / monitoring in sonochemical reactors,” in Ultrasonics
Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.
mla: Bornmann, Peter, et al. “Non-Perturbing Cavitation Detection / Monitoring in
Sonochemical Reactors.” Ultrasonics Symposium (IUS), 2012 IEEE International,
2012, pp. 1141–44, doi:10.1109/ULTSYM.2012.0284.
short: 'P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, T. Morita, in: Ultrasonics
Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.'
date_created: 2019-05-13T13:18:49Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2012.0284
keyword:
- cavitation
- chemical reactors
- microphones
- process monitoring
- reliability
- ultrasonic applications
- ultrasonic waves
- acoustic properties
- cavitation based ultrasound applications
- cavitation intensity
- change detection reliability
- external microphone
- malfunction detection reliability
- nonperturbing cavitation detection
- nonperturbing cavitation monitoring
- process monitoring
- self-sensing ultrasound transducer
- sonochemical reactors
- sonochemistry
- ultrasound cleaning
- ultrasound irradiation
- Acoustics
- Liquids
- Monitoring
- Sensors
- Sonar equipment
- Transducers
- Ultrasonic imaging
language:
- iso: eng
page: 1141-1144
publication: Ultrasonics Symposium (IUS), 2012 IEEE International
publication_identifier:
issn:
- 1948-5719
quality_controlled: '1'
status: public
title: Non-perturbing cavitation detection / monitoring in sonochemical reactors
type: conference
user_id: '55222'
year: '2012'
...
---
_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: '9785'
abstract:
- lang: eng
text: Hydrothermal method enables to synthesize high quality piezoelectric materials.
To shorten the reaction time and to get higher quality materials, we propose an
ultrasonic irradiation to the solution during the hydrothermal method. We named
it ultrasonic assisted hydrothermal method (UAHTM). We have synthesized lead-free
piezoelectric material and PZT thin film and the effect of UAHTM have been confirmed.
In this study, we tried to improve UAHTM. First, to generate powerful and stable
ultrasonic irradiation at high temperature on UAHTM, we developed a new transducer
using LiNbO3 single crystal. Second, to prevent contamination to the materials,
A Teflon cover on the tip of transducer was attached.
author:
- first_name: Gaku
full_name: Isobe, Gaku
last_name: Isobe
- first_name: Ryo
full_name: Ageba, Ryo
last_name: Ageba
- first_name: Takafumi
full_name: Maeda, Takafumi
last_name: Maeda
- first_name: Peter
full_name: Bornmann, Peter
last_name: Bornmann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
citation:
ama: 'Isobe G, Ageba R, Maeda T, Bornmann P, Hemsel T, Morita T. Synthesis of piezoelectric
materials by ultrasonic assisted hydrothermal method. In: B. J. Linde B, Paczkowski
J, Ponikwicki N, eds. AIP Conference Proceedings. Vol 1433. AIP; 2012:569-572.
doi:10.1063/1.3703251'
apa: Isobe, G., Ageba, R., Maeda, T., Bornmann, P., Hemsel, T., & Morita, T.
(2012). Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal
method. In B. B. J. Linde, J. Paczkowski, & N. Ponikwicki (Eds.), AIP Conference
Proceedings (Vol. 1433, pp. 569–572). AIP. https://doi.org/10.1063/1.3703251
bibtex: '@inproceedings{Isobe_Ageba_Maeda_Bornmann_Hemsel_Morita_2012, title={Synthesis
of piezoelectric materials by ultrasonic assisted hydrothermal method}, volume={1433},
DOI={10.1063/1.3703251}, number={1},
booktitle={AIP Conference Proceedings}, publisher={AIP}, author={Isobe, Gaku and
Ageba, Ryo and Maeda, Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita,
Takeshi}, editor={B. J. Linde, Bogumil and Paczkowski, Jacek and Ponikwicki, NikodemEditors},
year={2012}, pages={569–572} }'
chicago: Isobe, Gaku, Ryo Ageba, Takafumi Maeda, Peter Bornmann, Tobias Hemsel,
and Takeshi Morita. “Synthesis of Piezoelectric Materials by Ultrasonic Assisted
Hydrothermal Method.” In AIP Conference Proceedings, edited by Bogumil
B. J. Linde, Jacek Paczkowski, and Nikodem Ponikwicki, 1433:569–72. AIP, 2012.
https://doi.org/10.1063/1.3703251.
ieee: G. Isobe, R. Ageba, T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Synthesis
of piezoelectric materials by ultrasonic assisted hydrothermal method,” in AIP
Conference Proceedings, 2012, vol. 1433, no. 1, pp. 569–572.
mla: Isobe, Gaku, et al. “Synthesis of Piezoelectric Materials by Ultrasonic Assisted
Hydrothermal Method.” AIP Conference Proceedings, edited by Bogumil B.
J. Linde et al., vol. 1433, no. 1, AIP, 2012, pp. 569–72, doi:10.1063/1.3703251.
short: 'G. Isobe, R. Ageba, T. Maeda, P. Bornmann, T. Hemsel, T. Morita, in: B.
B. J. Linde, J. Paczkowski, N. Ponikwicki (Eds.), AIP Conference Proceedings,
AIP, 2012, pp. 569–572.'
date_created: 2019-05-13T13:21:56Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1063/1.3703251
editor:
- first_name: Bogumil
full_name: B. J. Linde, Bogumil
last_name: B. J. Linde
- first_name: Jacek
full_name: Paczkowski, Jacek
last_name: Paczkowski
- first_name: Nikodem
full_name: Ponikwicki, Nikodem
last_name: Ponikwicki
intvolume: ' 1433'
issue: '1'
keyword:
- contamination
- lead compounds
- piezoelectric materials
- piezoelectric thin films
- piezoelectric transducers
- ultrasonic effects
language:
- iso: eng
page: 569-572
publication: AIP Conference Proceedings
publisher: AIP
quality_controlled: '1'
status: public
title: Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method
type: conference
user_id: '55222'
volume: 1433
year: '2012'
...
---
_id: '9786'
abstract:
- lang: eng
text: Self-optimizing mechatronic systems are a new class of technical systems.
On the one hand, new challenges regarding dependability arise from their additional
complexity and adaptivity. On the other hand, their abilities enable new concepts
and methods to improve the dependability of mechatronic systems. This paper introduces
a multi-level dependability concept for selfoptimizing mechatronic systems and
shows how probabilistic planning can be used to improve the availability and reliability
of systems in the operating phase. The general idea to improve the availability
of autonomous systems by applying probabilistic planning methods to avoid energy
shortages is exemplified on the example of an innovative railway vehicle.
author:
- first_name: Benjamin
full_name: Klöpper, Benjamin
last_name: Klöpper
- first_name: Christoph
full_name: Sondermann-Wölke, Christoph
last_name: Sondermann-Wölke
- first_name: Christoph
full_name: Romaus, Christoph
last_name: Romaus
citation:
ama: Klöpper B, Sondermann-Wölke C, Romaus C. Probabilistic Planning for Predictive
Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management
of an Autonomous Railway Vehicle. Journal of Robotics and Mechatronics.
2012;24(1):5-15.
apa: Klöpper, B., Sondermann-Wölke, C., & Romaus, C. (2012). Probabilistic Planning
for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing
Energy Management of an Autonomous Railway Vehicle. Journal of Robotics and
Mechatronics, 24(1), 5–15.
bibtex: '@article{Klöpper_Sondermann-Wölke_Romaus_2012, title={Probabilistic Planning
for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing
Energy Management of an Autonomous Railway Vehicle}, volume={24}, number={1},
journal={Journal of Robotics and Mechatronics}, author={Klöpper, Benjamin and
Sondermann-Wölke, Christoph and Romaus, Christoph}, year={2012}, pages={5–15}
}'
chicago: 'Klöpper, Benjamin, Christoph Sondermann-Wölke, and Christoph Romaus. “Probabilistic
Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing
Energy Management of an Autonomous Railway Vehicle.” Journal of Robotics and
Mechatronics 24, no. 1 (2012): 5–15.'
ieee: B. Klöpper, C. Sondermann-Wölke, and C. Romaus, “Probabilistic Planning for
Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy
Management of an Autonomous Railway Vehicle,” Journal of Robotics and Mechatronics,
vol. 24, no. 1, pp. 5–15, 2012.
mla: Klöpper, Benjamin, et al. “Probabilistic Planning for Predictive Condition
Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous
Railway Vehicle.” Journal of Robotics and Mechatronics, vol. 24, no. 1,
2012, pp. 5–15.
short: B. Klöpper, C. Sondermann-Wölke, C. Romaus, Journal of Robotics and Mechatronics
24 (2012) 5–15.
date_created: 2019-05-13T13:23:45Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
intvolume: ' 24'
issue: '1'
keyword:
- self-optimizing systems
- dependability
- probabilistic planning
- energy management
language:
- iso: eng
page: 5-15
publication: Journal of Robotics and Mechatronics
quality_controlled: '1'
status: public
title: Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within
the Self-Optimizing Energy Management of an Autonomous Railway Vehicle
type: journal_article
user_id: '55222'
volume: 24
year: '2012'
...
---
_id: '9787'
author:
- first_name: Sergej
full_name: Kohl, Sergej
last_name: Kohl
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Armin
full_name: Zuber, Armin
last_name: Zuber
citation:
ama: 'Kohl S, Sextro W, Zuber A. Benteler Vehicle Dynamics -- Fahrdynamikentwicklung
basierend auf einer neuen Auslegungstheorie. In: 8. Tag Des Fahrwerks, Aachen,
2012. Institut für Kraftfahrzeuge, RWTH Aachen University in Aachen; 2012:38-60.'
apa: Kohl, S., Sextro, W., & Zuber, A. (2012). Benteler Vehicle Dynamics --
Fahrdynamikentwicklung basierend auf einer neuen Auslegungstheorie. In 8. Tag
des Fahrwerks, Aachen, 2012 (pp. 38–60). Institut für Kraftfahrzeuge, RWTH
Aachen University in Aachen.
bibtex: '@inproceedings{Kohl_Sextro_Zuber_2012, place={Institut für Kraftfahrzeuge,
RWTH Aachen University in Aachen}, title={Benteler Vehicle Dynamics -- Fahrdynamikentwicklung
basierend auf einer neuen Auslegungstheorie}, booktitle={8. Tag des Fahrwerks,
Aachen, 2012}, author={Kohl, Sergej and Sextro, Walter and Zuber, Armin}, year={2012},
pages={38–60} }'
chicago: Kohl, Sergej, Walter Sextro, and Armin Zuber. “Benteler Vehicle Dynamics
-- Fahrdynamikentwicklung Basierend Auf Einer Neuen Auslegungstheorie.” In 8.
Tag Des Fahrwerks, Aachen, 2012, 38–60. Institut für Kraftfahrzeuge, RWTH
Aachen University in Aachen, 2012.
ieee: S. Kohl, W. Sextro, and A. Zuber, “Benteler Vehicle Dynamics -- Fahrdynamikentwicklung
basierend auf einer neuen Auslegungstheorie,” in 8. Tag des Fahrwerks, Aachen,
2012, 2012, pp. 38–60.
mla: Kohl, Sergej, et al. “Benteler Vehicle Dynamics -- Fahrdynamikentwicklung Basierend
Auf Einer Neuen Auslegungstheorie.” 8. Tag Des Fahrwerks, Aachen, 2012,
2012, pp. 38–60.
short: 'S. Kohl, W. Sextro, A. Zuber, in: 8. Tag Des Fahrwerks, Aachen, 2012, Institut
für Kraftfahrzeuge, RWTH Aachen University in Aachen, 2012, pp. 38–60.'
date_created: 2019-05-13T13:25:59Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
language:
- iso: eng
page: 38-60
place: Institut für Kraftfahrzeuge, RWTH Aachen University in Aachen
popular_science: '1'
publication: 8. Tag des Fahrwerks, Aachen, 2012
status: public
title: Benteler Vehicle Dynamics -- Fahrdynamikentwicklung basierend auf einer neuen
Auslegungstheorie
type: conference
user_id: '55222'
year: '2012'
...
---
_id: '9788'
abstract:
- lang: eng
text: 'A hydrothermal method utilizes a crystallization process in the solution
so that the pure and high-quality powders can be realized. Sintering from the
hydrothermal KNbO3 and NaNbO3 powders, a high-dense lead-free piezoelectric (K,Na)NbO3
ceramics could be obtained (density: 98.8\%). Concerning about the g33 constant,
high value as large as commercial PZT ceramics was measured. Therefore, the hydrothermal
(K,Na)NbO3 ceramics is usable for the sensors and the energy harvesting devices.
To demonstrate the (K,Na)NbO3 ceramics, a hydrophone sensor was fabricated and
evaluated.'
author:
- first_name: Takafumi
full_name: Maeda, Takafumi
last_name: Maeda
- first_name: Peter
full_name: Bornmann, Peter
last_name: Bornmann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
citation:
ama: 'Maeda T, Bornmann P, Hemsel T, Morita T. Piezoelectric applications of hydrothermal
lead-free (K0.48Na0.52)NbO3 ceramics. In: Ultrasonics Symposium (IUS), 2012
IEEE International. ; 2012:194-195. doi:10.1109/ULTSYM.2012.0048'
apa: Maeda, T., Bornmann, P., Hemsel, T., & Morita, T. (2012). Piezoelectric
applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics. In Ultrasonics
Symposium (IUS), 2012 IEEE International (pp. 194–195). https://doi.org/10.1109/ULTSYM.2012.0048
bibtex: '@inproceedings{Maeda_Bornmann_Hemsel_Morita_2012, title={Piezoelectric
applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics}, DOI={10.1109/ULTSYM.2012.0048},
booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Maeda,
Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita, Takeshi}, year={2012},
pages={194–195} }'
chicago: Maeda, Takafumi, Peter Bornmann, Tobias Hemsel, and Takeshi Morita. “Piezoelectric
Applications of Hydrothermal Lead-Free (K0.48Na0.52)NbO3 Ceramics.” In Ultrasonics
Symposium (IUS), 2012 IEEE International, 194–95, 2012. https://doi.org/10.1109/ULTSYM.2012.0048.
ieee: T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Piezoelectric applications
of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics,” in Ultrasonics Symposium
(IUS), 2012 IEEE International, 2012, pp. 194–195.
mla: Maeda, Takafumi, et al. “Piezoelectric Applications of Hydrothermal Lead-Free
(K0.48Na0.52)NbO3 Ceramics.” Ultrasonics Symposium (IUS), 2012 IEEE International,
2012, pp. 194–95, doi:10.1109/ULTSYM.2012.0048.
short: 'T. Maeda, P. Bornmann, T. Hemsel, T. Morita, in: Ultrasonics Symposium (IUS),
2012 IEEE International, 2012, pp. 194–195.'
date_created: 2019-05-13T13:28:05Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2012.0048
keyword:
- crystallisation
- hydrophones
- piezoceramics
- potassium compounds
- powder technology
- powders
- sensors
- sintering
- sodium compounds
- (K0.48Na0.52)NbO3
- KNbO3 powder
- NaNbO3 powder
- crystallization
- energy harvesting devices
- g33 constant
- hydrophone sensor
- hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics
- hydrothermal method
- piezoelectric applications
- sintering
- Materials
- Transducers
language:
- iso: eng
page: 194-195
publication: Ultrasonics Symposium (IUS), 2012 IEEE International
publication_identifier:
issn:
- 1948-5719
quality_controlled: '1'
status: public
title: Piezoelectric applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics
type: conference
user_id: '55222'
year: '2012'
...
---
_id: '9789'
abstract:
- lang: eng
text: '[$Li_x(Na_0.52K_0.48)_1-x]NbO_3 (0 \leq x \leq 0.091)$ ceramics were synthesized
using hydrothermal powders and the lithium doping content was controlled to optimize
their piezoelectric properties. The raw KNbO$_3$ and NaNbO$_3$ powders were obtained
separately by a hydrothermal method and LiNbO$_3$ powders were prepared by milling
a commercial LiNbO$_3$ single crystal. These powders were mixed with ethanol at
a molar ratio LiNbO$_3$: ($Na_0.52K_0.48$)NbO$_3 = x : 1-x$. The synthesized powders
were sintered at 1060--1120 $\,^{\circ}$C for 2 h. We succeeded in obtaining highly
dense [$Li_x(Na_0.52K_0.48)_1-x]NbO_3$ ceramics using hydrothermal powder. The
X-ray diffraction patterns revealed that the crystal phase changed from orthorhombic
to tetragonal at around x = 0.06. At this morphotropic phase boundary (MPB), the
c/a ratio changed from 1.016 to 1.024 and the highest piezoelectric constant was
obtained with the chemical component of [$Li_x(Na_0.52K_0.48)_1-x]NbO_3$. The
obtained piezoelectric properties were as follows: $k_33 = 0.51, \epsilon 33^T/
\epsilon _0 = 836$ , $c_33^E = 46$ GPa, $d_33 = 203$ pC/N, and $T_c = 482 $\,^{\circ}$C$.'
author:
- first_name: Takafumi
full_name: Maeda, Takafumi
last_name: Maeda
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
citation:
ama: Maeda T, Hemsel T, Morita T. Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3
Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders.
Japanese Journal of Applied Physics. 2012;51:09MD08. doi:10.1143/JJAP.51.09MD08
apa: Maeda, T., Hemsel, T., & Morita, T. (2012). Piezoelectric Properties of
Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3
and NaNbO3 Fine Powders. Japanese Journal of Applied Physics, 51,
09MD08. https://doi.org/10.1143/JJAP.51.09MD08
bibtex: '@article{Maeda_Hemsel_Morita_2012, title={Piezoelectric Properties of Li-Doped
(K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and
NaNbO3 Fine Powders}, volume={51}, DOI={10.1143/JJAP.51.09MD08},
journal={Japanese Journal of Applied Physics}, publisher={The Japan Society of
Applied Physics}, author={Maeda, Takafumi and Hemsel, Tobias and Morita, Takeshi},
year={2012}, pages={09MD08} }'
chicago: 'Maeda, Takafumi, Tobias Hemsel, and Takeshi Morita. “Piezoelectric Properties
of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived
KNbO3 and NaNbO3 Fine Powders.” Japanese Journal of Applied Physics 51
(2012): 09MD08. https://doi.org/10.1143/JJAP.51.09MD08.'
ieee: T. Maeda, T. Hemsel, and T. Morita, “Piezoelectric Properties of Li-Doped
(K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and
NaNbO3 Fine Powders,” Japanese Journal of Applied Physics, vol. 51, p.
09MD08, 2012.
mla: Maeda, Takafumi, et al. “Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3
Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders.”
Japanese Journal of Applied Physics, vol. 51, The Japan Society of Applied
Physics, 2012, p. 09MD08, doi:10.1143/JJAP.51.09MD08.
short: T. Maeda, T. Hemsel, T. Morita, Japanese Journal of Applied Physics 51 (2012)
09MD08.
date_created: 2019-05-13T13:29:10Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1143/JJAP.51.09MD08
intvolume: ' 51'
language:
- iso: eng
page: 09MD08
publication: Japanese Journal of Applied Physics
publisher: The Japan Society of Applied Physics
quality_controlled: '1'
status: public
title: Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized
Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders
type: journal_article
user_id: '55222'
volume: 51
year: '2012'
...
---
_id: '9791'
abstract:
- lang: eng
text: 'The rapid development of communication and information technology opens up
fascinating perspectives, which go far beyond the state of the art in mechatronics:
mechatronic systems with inherent partial intelligence. These so called self-optimizing
systems adapt their objectives and behavior autonomously and flexibly to changing
operating conditions. On the one hand, securing the dependability of such systems
is challenging due to their complexity and non-deterministic behavior. On the
other hand, self-optimization can be used to increase the dependability of the
system during its operation. However, it has to be ensured, that the self-optimization
works dependable itself. To cope with these challenges, the multi-level dependability
concept was developed. It enables predictive condition monitoring, influences
the objectives of the system and determines suitable means to improve the system''s
dependability during its operation. In this contribution we introduce a procedure
for the conceptual design of an advanced condition monitoring based on the system''s
principle solution. The principle solution describes the principal operation mode
of the system and its desired behavior. It is modeled using the specification
technique for the domain-spanning description of the principle solution of a self-optimizing
system and consists of a coherent system of eight partial models (e.g. requirements,
active structure, system of objectives, behavior, etc.). The partial models are
analyzed separately in order to derive the components of the multi-level dependability
concept. In particular, the reliability analysis of the partial model active structure
is performed to identify the system elements to be monitored and parameters to
be measured. The principle solution is extended accordingly: e.g. with system
elements required for the realization of the dependability concept. The advantages
of the method are shown on the self-optimizing guidance module of a railroad vehicle.'
author:
- first_name: Christoph
full_name: Sondermann-Wölke , Christoph
last_name: 'Sondermann-Wölke '
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Rafal
full_name: Dorociak, Rafal
last_name: Dorociak
- first_name: Jürgen
full_name: Gausemeier, Jürgen
last_name: Gausemeier
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Sondermann-Wölke C, Meyer T, Dorociak R, Gausemeier J, Sextro W. Conceptual
Design of Advanced Condition Monitoring for a Self-Optimizing System based on
its Principle Solution. In: Proceedings of the 11th International Probabilistic
Safety Assessment and Management Conference (PSAM11) and The Annual European Safety
and Reliability Conference (ESREL2012). Helsinki, Finland; 2012.'
apa: Sondermann-Wölke , C., Meyer, T., Dorociak, R., Gausemeier, J., & Sextro,
W. (2012). Conceptual Design of Advanced Condition Monitoring for a Self-Optimizing
System based on its Principle Solution. In Proceedings of the 11th International
Probabilistic Safety Assessment and Management Conference (PSAM11) and The Annual
European Safety and Reliability Conference (ESREL2012). Helsinki, Finland.
bibtex: '@inproceedings{Sondermann-Wölke _Meyer_Dorociak_Gausemeier_Sextro_2012,
place={Helsinki, Finland}, title={Conceptual Design of Advanced Condition Monitoring
for a Self-Optimizing System based on its Principle Solution}, booktitle={Proceedings
of the 11th International Probabilistic Safety Assessment and Management Conference
(PSAM11) and The Annual European Safety and Reliability Conference (ESREL2012)},
author={Sondermann-Wölke , Christoph and Meyer, Tobias and Dorociak, Rafal and
Gausemeier, Jürgen and Sextro, Walter}, year={2012} }'
chicago: Sondermann-Wölke , Christoph, Tobias Meyer, Rafal Dorociak, Jürgen Gausemeier,
and Walter Sextro. “Conceptual Design of Advanced Condition Monitoring for a Self-Optimizing
System Based on Its Principle Solution.” In Proceedings of the 11th International
Probabilistic Safety Assessment and Management Conference (PSAM11) and The Annual
European Safety and Reliability Conference (ESREL2012). Helsinki, Finland,
2012.
ieee: C. Sondermann-Wölke , T. Meyer, R. Dorociak, J. Gausemeier, and W. Sextro,
“Conceptual Design of Advanced Condition Monitoring for a Self-Optimizing System
based on its Principle Solution,” in Proceedings of the 11th International
Probabilistic Safety Assessment and Management Conference (PSAM11) and The Annual
European Safety and Reliability Conference (ESREL2012), 2012.
mla: Sondermann-Wölke , Christoph, et al. “Conceptual Design of Advanced Condition
Monitoring for a Self-Optimizing System Based on Its Principle Solution.” Proceedings
of the 11th International Probabilistic Safety Assessment and Management Conference
(PSAM11) and The Annual European Safety and Reliability Conference (ESREL2012),
2012.
short: 'C. Sondermann-Wölke , T. Meyer, R. Dorociak, J. Gausemeier, W. Sextro, in:
Proceedings of the 11th International Probabilistic Safety Assessment and Management
Conference (PSAM11) and The Annual European Safety and Reliability Conference
(ESREL2012), Helsinki, Finland, 2012.'
date_created: 2019-05-13T13:41:34Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
keyword:
- Mechatronic Systems
- Principle Solution
- Condition Monitoring
- Conceptual Design
language:
- iso: eng
place: Helsinki, Finland
publication: Proceedings of the 11th International Probabilistic Safety Assessment
and Management Conference (PSAM11) and The Annual European Safety and Reliability
Conference (ESREL2012)
quality_controlled: '1'
status: public
title: Conceptual Design of Advanced Condition Monitoring for a Self-Optimizing System
based on its Principle Solution
type: conference
user_id: '55222'
year: '2012'
...
---
_id: '9806'
abstract:
- lang: eng
text: Piezoelectric inertia motors, also known as ``stick-slip-drives'', use the
inertia of a body to drive it by means of a friction contact in small steps. While
these steps normally involve stiction and sliding, the motors can also operate
in ``slip-slip'' mode without any phase of static friction. In this contribution,
a one degree of freedom model of an inertia motor driven by an ideal actuator
is analysed. Start-up and constant velocity operation of the motor are investigated
and appropriate quantities to compare ``stick-slip'' and ``slip-slip'' operation
are determined. Different aspects such as velocity, uniformity of motion, load
capacity, robustness, efficiency, and wear are considered. The analysis allows
both modes to be applied advantageously in different applications and can widen
the field of application of piezoelectric inertia motors. Motor designers are
enabled to choose the appropriate mode of operation and the best drive 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. Analysis of different operation modes for inertia
motors. ACTUATOR 2012 Conference Proceedings. 2012:761-764.
apa: Hunstig, M., Hemsel, T., & Sextro, W. (2012). Analysis of different operation
modes for inertia motors. ACTUATOR 2012 Conference Proceedings, 761–764.
bibtex: '@article{Hunstig_Hemsel_Sextro_2012, title={Analysis of different operation
modes for inertia motors}, journal={ACTUATOR 2012 Conference Proceedings}, author={Hunstig,
Matthias and Hemsel, Tobias and Sextro, Walter}, year={2012}, pages={761–764}
}'
chicago: Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “Analysis of Different
Operation Modes for Inertia Motors.” ACTUATOR 2012 Conference Proceedings,
2012, 761–64.
ieee: M. Hunstig, T. Hemsel, and W. Sextro, “Analysis of different operation modes
for inertia motors,” ACTUATOR 2012 Conference Proceedings, pp. 761–764,
2012.
mla: Hunstig, Matthias, et al. “Analysis of Different Operation Modes for Inertia
Motors.” ACTUATOR 2012 Conference Proceedings, 2012, pp. 761–64.
short: M. Hunstig, T. Hemsel, W. Sextro, ACTUATOR 2012 Conference Proceedings (2012)
761–764.
date_created: 2019-05-13T14:11:37Z
date_updated: 2022-01-06T07:04:21Z
department:
- _id: '151'
keyword:
- Piezoelectric Inertia Motors
- Drive Signals
- Stick-slip
- Slip-slip
language:
- iso: eng
page: 761-764
publication: ACTUATOR 2012 Conference Proceedings
quality_controlled: '1'
status: public
title: Analysis of different operation modes for inertia motors
type: journal_article
user_id: '55222'
year: '2012'
...