On the Integration of Tactile and Force Feedback

Fontana, Marco; Ruffaldi, Emanuele; Salasedo, Fabio; Bergamasco, Massimo

doi:10.5772/25446

Cited by 6 publications

(6 citation statements)

References 44 publications

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“…The indentation depth and contact area are generated simultaneously during touch, making it difficult to decouple the two parameters. Intentional design of materials and devices for generating tactile sensation-such as haptic displays and human-machine interfaces-requires understanding the role of and relationship between indentation depth and contact area (8,9). Here, our goal was to decouple these parameters using a system that allowed human subjects free exploration of a variety of engineered elastomeric slabs.…”

Section: Introductionmentioning

confidence: 99%

Role of indentation depth and contact area on human perception of softness for haptic interfaces

et al. 2019

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In engineering, the “softness” of an object, as measured by an indenter, manifests as two measurable parameters: (i) indentation depth and (ii) contact area. For humans, softness is not well defined, although it is believed that perception depends on the same two parameters. Decoupling their relative contributions, however, has not been straightforward because most bulk—“off-the-shelf”—materials exhibit the same ratio between the indentation depth and contact area. Here, we decoupled indentation depth and contact area by fabricating elastomeric slabs with precise thicknesses and microstructured surfaces. Human subject experiments using two-alternative forced-choice and magnitude estimation tests showed that the indentation depth and contact area contributed independently to perceived softness. We found an explicit relationship between the perceived softness of an object and its geometric properties. Using this approach, it is possible to design objects for human interaction with a desired level of perceived softness.

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Section: Introductionmentioning

confidence: 99%

Role of indentation depth and contact area on human perception of softness for haptic interfaces

et al. 2019

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“…Una consecuencia a todo esto se evidencia en la menor cantidad de desarrollos de interfaces hápticas puestas en el mercado (ver Tabla 4), en contraste con la cantidad de técnicas propuestas para la generación de estímulos táctiles (Tabla 2). Como complemento se presentan algunas dificultades técnicas en cuanto a tamaño y portabilidad, dado que si se desea reproducir dos parámetros táctiles simultáneos, redunda en baja resolución del efecto producido por uno de los estímulos (Fontana et al, 2012). Esta situación se ha ido solucionando de a poco y no se ha alcanzado un punto medio de equilibrio.…”

Section: Discussionunclassified

“…El análisis de las características generales de las IH táctiles actuales muestra que las que dan muy buena resolución son voluminosas y muestran limitaciones de usabilidad (Fontana et al, 2012).…”

Section: Ih De Tipo Táctilunclassified

INTERFACES HÁPTICAS: SISTEMAS CINESTÉSICOS Vs. SISTEMAS TÁCTILES

Pérez

Santís-Chaves

2017

reveia

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“…Both types of stimuli are necessary for reproducing the sensation of contact and manipulation of an object inside a virtual or a remote environment (Golledge et al, 2006;O'Malley and Gupta, 2008). Some studies show a trend that involves combining both interface types to complement their effects (Fontana et al, 2012;Hoshi et al, 2010;Pacchierotti et al, 2013;Yang, 2013;MIRALab, 2021), producing greater realism and immersion for the user inside the virtual environment. This immersive experience makes it an ideal technology to be applied in digital entertainment systems (DES).…”

Section: Introductionmentioning

confidence: 99%

Emulating Textures Using Vibrotactile Technology: HaptTech System and its Adaptation to a Commercial Kinesthetic Interface

et al. 2022

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This article presents the development and testing of a tactile interface prototype, HaptTech, that applies vibrotactile stimulation patterns to the fingertip, as well as an analysis of its performance when coupled to the commercial kinesthetic interface Novint Falcon. Its applicability in digital entertainment expects to improve the level of immersion into virtual reality scenarios. In the first experiment, a group of 75 subjects compared three different vibration stimuli that emulated different textures. They evaluated the stimuli on a 1 to 10 scale, where 1 means ‘non-perceivable differences’ and 10 means ‘entirely differentiable’. The obtained mean values were 9 (textures 1 and 3), 8,29 (textures 1 and 2), and 7,43 (textures 2 and 3), indicating HaptTech’s capability to reproduce differentiable stimuli. In the second experiment, 31 subjects evaluated the coupling between HaptTech and Novint Falcon. They perceived differences when the HaptTech system was activated in the context of a comparison between kinesthetic and vibrotactile plus kinesthetic stimuli. In the third experiment, the subjects evaluated the similarity between the perceived stimuli on the hand and a visualized texture pattern in a virtual environment. The resulting median values were 8, 8, and 9 for textures 1, 2, and 3, respectively, which demonstrate that the subjects perceived a high correspondence for each one.

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On the Integration of Tactile and Force Feedback

Cited by 6 publications

References 44 publications

Role of indentation depth and contact area on human perception of softness for haptic interfaces

Role of indentation depth and contact area on human perception of softness for haptic interfaces

INTERFACES HÁPTICAS: SISTEMAS CINESTÉSICOS Vs. SISTEMAS TÁCTILES

Emulating Textures Using Vibrotactile Technology: HaptTech System and its Adaptation to a Commercial Kinesthetic Interface

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