Switchpad: Active lateral force feedback over a large area based on switching resonant modes

Heng Xu*, Michael A. Peshkin, J. Edward Colgate

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a new device, the SwitchPaD, to generate an active lateral force on a bare fingertip over a large touch area. Like our previous device, the UltraShiver, the SwitchPaD uses synchronization of in-plane ultrasonic oscillation and out-of-plane electroadhesion to generate force. The UltraShiver, however, relied on a single longitudinal resonance to produce oscillations, resulting in an inconsistent force profile. The SwitchPaD switches between the first and the second longitudinal mode based on the finger position, resulting in a much more consistent force profile across the touch surface. Experiments are used to compare the performance of two different modal switching strategies. Results indicate that the SwitchPaD can generate 250 mN peak active lateral force over a large area, and that, with the proper switching strategy, the switch itself is imperceptible.

Original languageEnglish (US)
Title of host publicationHaptics
Subtitle of host publicationScience, Technology, Applications - 12th International Conference, EuroHaptics 2020, Proceedings
EditorsIlana Nisky, Jess Hartcher-O’Brien, Michaël Wiertlewski, Jeroen Smeets
PublisherSpringer Science and Business Media Deutschland GmbH
Pages217-225
Number of pages9
ISBN (Print)9783030581466
DOIs
StatePublished - 2020
Event12th International Conference on Human Haptic Sensing and Touch Enabled Computer Applications, EuroHaptics 2020 - Leiden, Netherlands
Duration: Sep 6 2020Sep 9 2020

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume12272 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference12th International Conference on Human Haptic Sensing and Touch Enabled Computer Applications, EuroHaptics 2020
CountryNetherlands
CityLeiden
Period9/6/209/9/20

Keywords

  • Active lateral force feedback
  • Electroadhesion
  • Resonant modes switch
  • Ultrasonic oscillation

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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