Details
| Original language | English |
|---|---|
| Pages (from-to) | 177-185 |
| Number of pages | 9 |
| Journal | Energy Harvesting and Systems |
| Volume | 2 |
| Issue number | 3 |
| Early online date | 14 Apr 2015 |
| Publication status | Published - 1 Jul 2015 |
Abstract
The excitation of mechanoreceptors in the finger with different frequencies and intensities generates a tactile impression. For the experience of a complete surface many distributed sources are needed in the tactile display. For these local stimulations of the finger several piezoelectric bending actuators will be arranged in an array perpendicular to the skin. The challenge in the system design is to transfer high dynamic shear forces to the skin at required frequencies together with a compact display design. In order to estimate the dynamic behavior of the bending actuators a transfer matrix method model based on the Timoshenko beam theory is derived. Beside the outer geometric values, the layered structure of the actuator is included in the model. In addition the influence of the load on the actuator's tip in lateral and in normal direction as well as on the rotational degree of freedom is taken into account. Using the analytical approach, a parametric study is carried out to find an optimized actuator design for the display. For the validation, the modeled beam is compared with experimental data.
Keywords
- loaded piezoelectric beam, multi-layer structure, tactile display, Timoshenko, transfer matrix method
ASJC Scopus subject areas
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
- Chemistry(all)
- Electrochemistry
Sustainable Development Goals
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In: Energy Harvesting and Systems, Vol. 2, No. 3, 01.07.2015, p. 177-185.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Optimization of a Piezoelectric Bending Actuator for a Tactile Virtual Reality Display
AU - Hofmann, Viktor
AU - Twiefel, Jens
PY - 2015/7/1
Y1 - 2015/7/1
N2 - The excitation of mechanoreceptors in the finger with different frequencies and intensities generates a tactile impression. For the experience of a complete surface many distributed sources are needed in the tactile display. For these local stimulations of the finger several piezoelectric bending actuators will be arranged in an array perpendicular to the skin. The challenge in the system design is to transfer high dynamic shear forces to the skin at required frequencies together with a compact display design. In order to estimate the dynamic behavior of the bending actuators a transfer matrix method model based on the Timoshenko beam theory is derived. Beside the outer geometric values, the layered structure of the actuator is included in the model. In addition the influence of the load on the actuator's tip in lateral and in normal direction as well as on the rotational degree of freedom is taken into account. Using the analytical approach, a parametric study is carried out to find an optimized actuator design for the display. For the validation, the modeled beam is compared with experimental data.
AB - The excitation of mechanoreceptors in the finger with different frequencies and intensities generates a tactile impression. For the experience of a complete surface many distributed sources are needed in the tactile display. For these local stimulations of the finger several piezoelectric bending actuators will be arranged in an array perpendicular to the skin. The challenge in the system design is to transfer high dynamic shear forces to the skin at required frequencies together with a compact display design. In order to estimate the dynamic behavior of the bending actuators a transfer matrix method model based on the Timoshenko beam theory is derived. Beside the outer geometric values, the layered structure of the actuator is included in the model. In addition the influence of the load on the actuator's tip in lateral and in normal direction as well as on the rotational degree of freedom is taken into account. Using the analytical approach, a parametric study is carried out to find an optimized actuator design for the display. For the validation, the modeled beam is compared with experimental data.
KW - loaded piezoelectric beam
KW - multi-layer structure
KW - tactile display
KW - Timoshenko
KW - transfer matrix method
UR - http://www.scopus.com/inward/record.url?scp=85126442257&partnerID=8YFLogxK
U2 - 10.1515/ehs-2014-0055
DO - 10.1515/ehs-2014-0055
M3 - Article
AN - SCOPUS:85126442257
VL - 2
SP - 177
EP - 185
JO - Energy Harvesting and Systems
JF - Energy Harvesting and Systems
SN - 2329-8774
IS - 3
ER -