Tactile perception by friction induced vibrations
1100 - 1110
Item Usage Stats
When a finger moves to scan the surface of an object (haptic sensing), the sliding contact generates vibrations that propagate in the finger skin activating the receptors (mechanoreceptors) located in the skin, allowing the brain to identify objects and perceive information about their properties. The information about the surface of the object is transmitted through vibrations induced by friction between the skin and the object scanned by the fingertip. The mechanoreceptors transduce the stress state into electrical impulses that are conveyed to the brain. A clear understanding of the mechanisms of the tactile sensing is fundamental to numerous applications, like the development of artificial tactile sensors for intelligent prostheses or robotic assistants, and in ergonomics. While the correlation between surface roughness and tactile sensation has already been reported in literature, the vibration spectra induced by the finger-surface scanning and the consequent activation of the mechanoreceptors on the skin have received less attention. In this paper, frequency analysis of signals characterizing surface scanning is carried out to investigate the vibration spectrum measured on the finger and to highlight the changes shown in the vibration spectra as a function of characteristic contact parameters such as scanning speed, roughness and surface texture. An experimental set-up is developed to recover the vibration dynamics by detecting the contact force and the induced vibrations; the bench test has been designed to guarantee reproducibility of measurements at the low amplitude of the vibrations of interest, and to perform measurements without introducing external noise. Two different perception mechanisms, as a function of the roughness wavelength, have been pointed out. The spectrum of vibration obtained by scanning textiles has been investigated. © 2011 Elsevier Ltd. All rights reserved.
KeywordsFriction induced vibrations
Friction induced vibration
Published Version (Please cite this version)http://dx.doi.org/10.1016/j.triboint.2011.03.019
Showing items related by title, author, creator and subject.
Habiboǧlu, Yusuf Hakan; Sevimli, Rasim Akın; Çetin, A. Enis; Pearson, T.C. (IEEE, 2013)In this article nut-shell pieces are separated from pistachio kernels and hazelnut kernels using impact vibration analysis. Vibration signals are recorded and analyzed in real-time. Mel-kepstral feature parameters and line ...
Demirkan, H. (Open House International Association, 2013-03)The aim of the study is to determine and prioritise the characteristics of the builtenvironment that increase the effectiveness of the walking surfaces for blind and vision-impaired people. Tactile walking surface indicators ...
Akay, A.; Echols, B.; Ding, J.; Dussaud, A.; Lips, A. (Elsevier, 2012-02-15)Tactile perception of materials and surface texture involves friction under light normal loads and is fundamental to further advancing areas such as tactile sensing, haptic systems used in robotic gripping of sensitive ...