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Control of an ultrasonic haptic interface for button simulation

Archive ouverte : Article de revue

Garcia, Pierre | Giraud, Frédéric | Semail, Betty | Rupin, Matthieu | Kaci, Anis

Edité par HAL CCSD ; Elsevier

International audience. This work presents the control of a piezoelectric interface that combines two vibration modes of a plate to render the haptic feeling of a button click. By principle, the two vibration modes create an elliptical motion of particles of a beam that can induce a lateral force to the fingerpulp. In this device, the synchronization of the modes’ vibrations is essential, and can be obtained with a closed loop control. In the paper, we present the control in the (d,q) frame, because it can ensure the dynamic performances to achieve a compelling haptic feedback, yet being robust besides the external disturbances produced by the user’s finger. The proposed method could achieve a 2 ms response time, and the haptic feedback was perceived by 100% of users in a psychophysical study.

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