Applied Bionics and Biomechanics

Applied Bionics and Biomechanics / 2007 / Article

Open Access

Volume 4 |Article ID 543472 | https://doi.org/10.1080/11762320701470517

R. Velázquez, E. E. Pissaloux, M. Hafez, J. Szewczyk, "Toward Low-Cost Highly Portable Tactile Displays with Shape Memory Alloys", Applied Bionics and Biomechanics, vol. 4, Article ID 543472, 14 pages, 2007. https://doi.org/10.1080/11762320701470517

Toward Low-Cost Highly Portable Tactile Displays with Shape Memory Alloys

Abstract

This paper presents a new concept of low-cost, high-resolution, lightweight, compact and highly portable tactile display. The prototype consists of an array of 8 × 8 upward/downward independent moveable pins based on shape memory alloy (SMA) technology. Each tactile actuator consists of an antagonist arranged pair of miniature NiTi SMA helical springs capable of developing a 300 mN pull force at 1.5 Hz bandwidth by using simple forced-air convection. The proposed concept allows the development of 200 g weight tactile instruments of compact dimensions which can be easily carried by a visually disabled user. A detailed technical description of the SMA active element, tactile actuator and tactile display is presented and discussed. Preliminary perceptual results confirm the effectiveness of the display on information transmission.

Copyright © 2007 Hindawi Publishing Corporation. 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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