Advertisement

Simulation Study on the Effects of Adaptive Time for Assist Considering Release of Isometric Force During Elbow Flexion

  • Jeewon ChoiEmail author
  • Ping Yeap Loh
  • Satoshi Muraki
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 820)

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.

Keywords

Power-assist simulation Adaptive time Muscular force release 

References

  1. 1.
    Anttila H, Samuelsson K, Salminen AL, Brandt Å (2012) Quality of evidence of assistive technology interventions for people with disability: an overview of systematic reviews. Technol Disabil 24(1):9–48Google Scholar
  2. 2.
    Nasir N, Hayashi K, Loh PY, Muraki S (2017) The effect of assistive force on the agonist and antagonist muscles in elbow flexion. Mov Health Exerc 6(2):35–52Google Scholar
  3. 3.
    Naik SK, Patten C, Lodha N, Coombes SA, Cauraugh JH (2011) Force control deficits in chronic stroke: grip formation and release phases. Exp Brain Res 211(1):1CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Graduate School of DesignKyushu UniversityFukuokaJapan
  2. 2.Faculty of DesignKyushu UniversityFukuokaJapan

Personalised recommendations