Vibration analysis for the development of resonant microbeam high-resolution vibrotactile haptic display

Daehan Wi, Angela Sodemann

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

One type of assistive device for the blind has attempted to convert visual information into information that can be perceived through another sense, such as touch or hearing. A vibrotactile haptic display assistive device consists of an array of vibrating elements placed against the skin, allowing the blind individual to receive visual information through touch. However, these approaches have two significant technical challenges: large vibration element size and the number of microcontroller pins required for vibration control, both causing excessively low resolution of the device. Here, we propose and investigate a type of high-resolution vibrotactile haptic display which overcomes these challenges by utilizing a ‘microbeam’ as the vibrating element. These microbeams can then be actuated using only one microcontroller pin connected to a speaker or surface transducer. We propose that this approach could solve the low-resolution problem currently present in all haptic displays. In this paper, we present the results of an investigation into the manufacturability of such a device, simulation of the vibrational characteristics, and prototyping and experimental validation of the device concept.

Original languageEnglish (US)
Pages (from-to)362-372
Number of pages11
JournalJVC/Journal of Vibration and Control
Volume25
Issue number2
DOIs
StatePublished - Jan 1 2019

Keywords

  • Beam array
  • beam vibration
  • haptic
  • haptic device
  • haptic display
  • high-resolution
  • natural frequency
  • resonant frequency
  • vibration
  • visual substitution

ASJC Scopus subject areas

  • Automotive Engineering
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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