Detection Thresholds for Small Haptic Effects

Dosher, J. and Hannaford, B. (2001) Detection Thresholds for Small Haptic Effects. In: Proceedings, SPIE Teleoperator and Telemanipulator Workshop.

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In prior research we reported on experiments to measure the smallest haptic effects the FHD can meaningfully communicate to an operator (Dosher and Hannaford, 2001). These experiments varied the force displayed to the subject, with all other factors held constant. In this paper we report on experiments studying the effects of varying the size, shape, and pulse-duration of a haptic feature. We again measure the smallest haptic effects that can be meaningfully communicated to an operator; however, using a variation of icon widths, icon waveforms, and static pulse-widths. In this paper 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 65 mN, twice that of saw-tooth shaped icons. In the case of static icons, longer pulse-widths corresponded to slightly higher threshold values.

Item Type: Conference or Workshop Item (Paper)
Subjects: D Haptics
Depositing User: Nava Aghdasi
Date Deposited: 12 Aug 2015 20:16
Last Modified: 12 Aug 2015 20:16

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