A Piezoelectric Tactile Display Using Travelling Lamb Wave
نویسندگان
چکیده
A travelling Lamb wave tactile display has been developed. To indicate smooth or braking sensation, the device is controlled in order to impose the relative speed between the finger and the wave, so that a variable shear force appears on the fingerpulp. Moreover, at low frequency, an amplitude modulation of the travelling Lamb wave is achieved so as to excite alternatively shear forces on the surface of the substrate; according to the finger’s speed. Using a stator of a travelling wave motor (Shinei USR60) with a linear position sensor, users can enjoy various textures. A comparison test has been carried out and shows a good percentage of correct recognition for specific rough textures.
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