時変弾性係数を用いた他動底背屈時の足関節トルクの推定

Translated title of the contribution: Estimation of Ankle Torque in Passive Dorsiflexion and Plantar Flexion Using Time-Varying Elastic Coefficient

Yuma Nagaoka, Kosuke Kitabata, Daisuke Yashiro, Kazuhiro Yubai, Satoshi Komada, Kotaro Takeda

Research output: Contribution to journalArticlepeer-review

Abstract

The resistance torques around the ankle joint differ between plantar flexion and dorsiflexion during passive movements at the same angle. Some conventional methods that have modeled the relationships between the joint angles and resistance torques using time-invariant elastic coefficients, which cannot account for the hysteresis property. Here, we propose a new modeling method using a time-varying elastic coefficient to represent the hysteresis of the ankle joint. In the present study, we used a custom-made motorized device to rotate the ankle joint passively and measured the joint angles and resistance torques from five healthy participants. By comparing the measured torques with the estimated values, we show that the proposed method can estimate the torque with less error than the conventional methods.

Translated title of the contributionEstimation of Ankle Torque in Passive Dorsiflexion and Plantar Flexion Using Time-Varying Elastic Coefficient
Original languageJapanese
Pages (from-to)232-240
Number of pages9
JournalIEEJ Transactions on Industry Applications
Volume142
Issue number3
DOIs
Publication statusPublished - 2022

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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