Article
Version 1
Preserved in Portico This version is not peer-reviewed
Transparent Localized Haptics: Utilization of PVDF-Type Piezoelectric Actuators on Touch-Displays
Version 1
: Received: 13 June 2023 / Approved: 14 June 2023 / Online: 14 June 2023 (08:55:15 CEST)
A peer-reviewed article of this Preprint also exists.
Ege, E.S.; Balikci, A. Transparent Localized Haptics: Utilization of PVDF Actuators on Touch Displays. Actuators 2023, 12, 289. Ege, E.S.; Balikci, A. Transparent Localized Haptics: Utilization of PVDF Actuators on Touch Displays. Actuators 2023, 12, 289.
Abstract
Generating localized haptic feedback on touch displays has been a challenge in recent years. In this study, we introduce a haptic interface using transparent thin-film PVDF actuators to address this issue. The transparency feature allows for mounting the actuators at any location beneath the display, enabling localized haptic feedback as the generated vibration is primarily evident on the mounting area. Two different configurations are designed, simulated and prepared to explore the effectiveness of the proposed approach. The first configuration is used to characterize the haptic interface. Modal and forced-vibration analysis are performed to identify important design characteristics based on human factor considerations. Subsequent 2AFC psychophysics experiments validate the characteristics. In the second configuration, eight actuators are attached to the touch surface in a 2x4 matrix formation and excited at different voltage amplitudes. Human experiments are conducted based on the results from corresponding forced-vibration analysis. The results show that subjects demonstrate an accuracy of 96% in identifying locations with haptic feedback when the actuators are excited with 232 Vpp. Overall, our study demonstrates the effectiveness of the haptic interface equipped with PVDF-type actuators in achieving localized haptic feedback on touch displays.
Keywords
localized haptic feedback; PVDF actuators; touch displays; modal analysis; forced-vibration; psychophysics; psychometric function.
Subject
Computer Science and Mathematics, Robotics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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