Simulation study on the effects of adaptive time for assist considering release of isometric force during elbow flexion

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The increasing trend of development of assistive technology allows for the use of assistive robots such as power assist devices to be prevalent in various social domains. Such power assist devices usually provide incidental power to their users, requiring human-machine force interaction. If the power assist device requires users to release their muscular force without considering adaptive time, users might be confused to control the level of their manual performance in response to the external force. This study investigated adaptive time with varying release rates of isometric force during one-arm elbow flexion, focusing on muscle activity and force control. Eight participants conducted graphical force-tracking tasks designed to simulate power-assist condition. Electromyography signals and the tension forces of the biceps brachii and triceps brachii were measured. The results implied that sufficient adaptive time for muscular force release induced better performance level with a smaller difference between the target force and the actual force. However, higher subjective exertion was also accompanied during the longer time for muscular force release. This study suggests that in designing power assist devices, the duration for muscular force release and consequent characteristics should be considered to maintain the precise level of force control.

Original languageEnglish
Title of host publicationProceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III
Subtitle of host publicationMusculoskeletal Disorders
EditorsRiccardo Tartaglia, Sara Albolino, Thomas Alexander, Sebastiano Bagnara, Yushi Fujita
PublisherSpringer Verlag
Pages347-350
Number of pages4
ISBN (Print)9783319960821
DOIs
Publication statusPublished - Jan 1 2019
Event20th Congress of the International Ergonomics Association, IEA 2018 - Florence, Italy
Duration: Aug 26 2018Aug 30 2018

Publication series

NameAdvances in Intelligent Systems and Computing
Volume820
ISSN (Print)2194-5357

Other

Other20th Congress of the International Ergonomics Association, IEA 2018
CountryItaly
CityFlorence
Period8/26/188/30/18

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Computer Science(all)

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