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Proceedings Paper

Detection thresholds for small haptic effects
Author(s): Jesse A. Dosher; Blake Hannaford
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Paper Abstract

We are interested in finding out whether or not haptic interfaces will be useful in portable and hand held devices. Such systems will have severe constraints on force output. Our first step is to investigate the lower limits at which haptic effects can be perceived. In this paper we report on experiments studying the effects of varying the amplitude, size, shape, and pulse-duration of a haptic feature. Using a specific haptic device we measure the smallest detectable haptics effects, with active exploration of saw-tooth shaped icons sized 3, 4 and 5 mm, a sine-shaped icon 5 mm wide, and static pulses 50, 100, and 150 ms in width. Smooth shaped icons resulted in a detection threshold of approximately 55 mN, almost twice that of saw-tooth shaped icons which had a threshold of 31 mN.

Paper Details

Date Published: 5 February 2002
PDF: 10 pages
Proc. SPIE 4570, Telemanipulator and Telepresence Technologies VIII, (5 February 2002); doi: 10.1117/12.454745
Show Author Affiliations
Jesse A. Dosher, Univ. of Washington (United States)
Blake Hannaford, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 4570:
Telemanipulator and Telepresence Technologies VIII
Matthew R. Stein, Editor(s)

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