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Speed-accuracy tradeoff of controlling absolute magnitude of fingertip force

  • Beihang University
  • Tsinghua University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Controlling absolute magnitudes of fingertip force is an important skill in many haptic interactions such as surgical operations and mechanical assemblies. A fundamental question in the force control is how quickly human can output a target force with expected accuracy. In this paper, human's capability to control absolute magnitudes of fingertip force under audio or visual feedback was observed through experiments. Twelve participants applied a target force by pressing a force sensor with their fingers and maintained the force within a specified tolerance for a specific period of time (500ms). The magnitudes of target force and tolerance were manipulated systematically to yield varied levels of task difficulty. The experimental data showed that the applied fingertip force obeyed Fitts' law under both visual and auditory feedback modes when the index of difficulty (ID) was smaller than a threshold. The results may be used as guidelines for the applications that rely on accurate and quick changing force control over a target region such as multiple tapping tasks.

Original languageEnglish
Title of host publicationIEEE World Haptics Conference, WHC 2015
EditorsJ. Edward Colgate, Hong Z. Tan, Hong Z. Tan, Seungmoon Choi, Gregory J. Gerling
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages408-414
Number of pages7
ISBN (Electronic)9781479966240
DOIs
StatePublished - 4 Aug 2015
Event10th IEEE World Haptics Conference, WHC 2015 - Evanston, United States
Duration: 22 Jun 201526 Jun 2015

Publication series

NameIEEE World Haptics Conference, WHC 2015

Conference

Conference10th IEEE World Haptics Conference, WHC 2015
Country/TerritoryUnited States
CityEvanston
Period22/06/1526/06/15

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