Design and development of a pulsed electromagnetic micro-actuator for 3D virtual tactile displays

Kai Deng, Eniko T. Enikov

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The design and analysis of a miniature electromagnetic actuator for use in a novel virtual tactile display is described. The actuator operates in repulsive mode so that it can be used for vibro-tactile stimulation of a human fingertip. Pulsed current and permanent magnet based approaches are investigated and compared. Four frequencies (10, 50, 100, and 150 Hz) were used to test the perception limit of three human subjects. The results indicated that the perception is not strongly dependent on frequency in the test range. The required stimulation energy of individual pulses was estimated to be below 57 micro-Joules, while the average peak-force needed for reliable stimulation was 59 milli-Newtons. The perception of simple test shapes was also tested by attaching the actuator onto the fingertip of the human subjects and turning it on and off as a function of its position.

Original languageEnglish (US)
Pages (from-to)503-509
Number of pages7
JournalMechatronics
Volume20
Issue number4
DOIs
StatePublished - Jun 2010

Keywords

  • Electromagnetic
  • Microactuator
  • Pulsed
  • Tactile perception
  • Virtual tactile display

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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