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Wearable wireless tactile display for virtual interactions with soft bodies.

Frediani G, Mazzei D, De Rossi DE, Carpi F - Front Bioeng Biotechnol (2014)

Bottom Line: The device was based on dielectric elastomer actuators, as high-performance electromechanically active polymers.The actuator was arranged at the user's fingertip, integrated within a plastic case, which also hosted a compact high-voltage circuitry.We present the structure of the device and a characterization of it, in terms of electromechanical response and stress relaxation.

View Article: PubMed Central - PubMed

Affiliation: School of Engineering and Material Science, Queen Mary University of London , London , UK.

ABSTRACT
We describe here a wearable, wireless, compact, and lightweight tactile display, able to mechanically stimulate the fingertip of users, so as to simulate contact with soft bodies in virtual environments. The device was based on dielectric elastomer actuators, as high-performance electromechanically active polymers. The actuator was arranged at the user's fingertip, integrated within a plastic case, which also hosted a compact high-voltage circuitry. A custom-made wireless control unit was arranged on the forearm and connected to the display via low-voltage leads. We present the structure of the device and a characterization of it, in terms of electromechanical response and stress relaxation. Furthermore, we present results of a psychophysical test aimed at assessing the ability of the system to generate different levels of force that can be perceived by users.

No MeSH data available.


Related in: MedlinePlus

Force perceived by the user as a function of the applied voltage while the finger is kept at a constant position corresponding to the maximum displacement (3.25 mm) that the actuator is capable of producing. The five levels of force F1–F5 used for the psychophysical test are indicated. Error bars represent a 95% confidence interval. A fitting line of the experimental data is used as a guide for the eye.
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Figure 8: Force perceived by the user as a function of the applied voltage while the finger is kept at a constant position corresponding to the maximum displacement (3.25 mm) that the actuator is capable of producing. The five levels of force F1–F5 used for the psychophysical test are indicated. Error bars represent a 95% confidence interval. A fitting line of the experimental data is used as a guide for the eye.

Mentions: Figure 8 shows the dependence of the blocking force on the voltage for a constant deformation equal to the maximum active displacement (3.25 mm) measured during the free-stroke test. So, this is the compressive force perceived by the user while the finger is kept at that constant position.


Wearable wireless tactile display for virtual interactions with soft bodies.

Frediani G, Mazzei D, De Rossi DE, Carpi F - Front Bioeng Biotechnol (2014)

Force perceived by the user as a function of the applied voltage while the finger is kept at a constant position corresponding to the maximum displacement (3.25 mm) that the actuator is capable of producing. The five levels of force F1–F5 used for the psychophysical test are indicated. Error bars represent a 95% confidence interval. A fitting line of the experimental data is used as a guide for the eye.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4150388&req=5

Figure 8: Force perceived by the user as a function of the applied voltage while the finger is kept at a constant position corresponding to the maximum displacement (3.25 mm) that the actuator is capable of producing. The five levels of force F1–F5 used for the psychophysical test are indicated. Error bars represent a 95% confidence interval. A fitting line of the experimental data is used as a guide for the eye.
Mentions: Figure 8 shows the dependence of the blocking force on the voltage for a constant deformation equal to the maximum active displacement (3.25 mm) measured during the free-stroke test. So, this is the compressive force perceived by the user while the finger is kept at that constant position.

Bottom Line: The device was based on dielectric elastomer actuators, as high-performance electromechanically active polymers.The actuator was arranged at the user's fingertip, integrated within a plastic case, which also hosted a compact high-voltage circuitry.We present the structure of the device and a characterization of it, in terms of electromechanical response and stress relaxation.

View Article: PubMed Central - PubMed

Affiliation: School of Engineering and Material Science, Queen Mary University of London , London , UK.

ABSTRACT
We describe here a wearable, wireless, compact, and lightweight tactile display, able to mechanically stimulate the fingertip of users, so as to simulate contact with soft bodies in virtual environments. The device was based on dielectric elastomer actuators, as high-performance electromechanically active polymers. The actuator was arranged at the user's fingertip, integrated within a plastic case, which also hosted a compact high-voltage circuitry. A custom-made wireless control unit was arranged on the forearm and connected to the display via low-voltage leads. We present the structure of the device and a characterization of it, in terms of electromechanical response and stress relaxation. Furthermore, we present results of a psychophysical test aimed at assessing the ability of the system to generate different levels of force that can be perceived by users.

No MeSH data available.


Related in: MedlinePlus