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Differentiated Haptic Stimulation by Modal Synthesis of Vibration Field

Communication avec acte
Author
ENFERAD, Ehsan
AMBERG, Michel
374570 Université de Lille
LEMAIRE-SEMAIL, Betty
374570 Université de Lille
GIRAUD, Frédéric
374570 Université de Lille
ccGIRAUD-AUDINE, Christophe
13338 Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 [L2EP]
301320 École Nationale Supérieure d'Arts et Métiers [ENSAM]
244724 Institut de Recherche sur les Composants logiciels et matériels pour l'Information et la Communication Avancée - UAR 3380 [IRCICA]

URI
http://hdl.handle.net/10985/13074
Date
2018

Abstract

To date, Several focusing techniques have been proposed to realize localized stimulation on haptic interfaces: phased arrays of actuators with delayed excitation, or time reversal techniques which require a preliminary learning phase. Additionally, these techniques are sensitive to parameters variation and disturbances. Modal decomposition allows to realize arbitrary vibration fields congruent with the boundary conditions and in this paper, Modal decomposition is proposed to realize a desired vibration velocity field in order to have differentiated stimuli. The experimental results validate the ability of the method to approximate satisfactorily a desired reference form. The psychophysical evaluations show that users can differentiate and localize the stimulation while exploring a surface with two fingers.

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