Development, realization and validation of a piezoelectric flexible haptic interface
Résumé
This paper reports the development, realization and experimental validation of the first flexible haptic interface using friction modulation principle. This conformable haptic interface is composed of nine rigid haptic pixels formed with PZT ceramics bonded to square glass plates integrated on a KAPTON polyimide film. The design is optimized analyzing the flexural waves at the surface. An innovative hybrid process in cleanroom enables to obtain haptic resonators vibrating at ultrasonic frequencies, and creating displacements of 4 µm peak-to-peak for an actuation signal of 20 V peak-to-peak. Thanks to a dedicated actuation electronics based on an FPGA board, a haptic effect by friction modulation allowing to create virtual texture is obtained on this flexible haptic interface.
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