VIBRATING TACTILE INTERFACE

摘要

The tactile interface (1) comprises a vibrating structure (2) with a plate (20) one (20a) face of which forms said vibrating contact surface of the interface and a piezoelectric layer (21) fixed to the other face of said plate, said structure having at least one flexing mode, characterised by a resonance frequency between 10kHz and 100kHz and electrical supply means (AL) connected to the piezoelectric layer (21). The piezoelectric layer (21) and the electrical supply means (AL) are designed to stimulate the flexing mode of the vibrating structure (2) and to generate stationary Lamb waves in the vibrating structure (2) with a propagation direction following at least one rectilinear propagation axis. The tactile interface permits the tactile reproduction of fine textures or roughness by altering the tactile sensation of touching the contact surface (20a) and modulating the "Squeeze film" effect.