パワーアシスト肘屈曲運動におけるアシスト開始タイミングの違いに対する人間の運動応答
Daichi Kusumoto1, Wen Liang Yeoh2, Jeewon Choi3
1Graduate School of Design, Kyushu University, Fukuoka, Japan.
Applied ergonomics
|January 15, 2026
まとめ
外骨格アシストのタイミングは、自然な動きにとって重要である。理想的なタイミングは、運動精度の向上と主体性の維持とのバランスを取り、ユーザーの受容性を高める。
科学分野:
- 生体力学
- 人間とロボットの相互作用
- リハビリテーション工学
背景:
- 外骨格アシストのタイミングは、自然な動きを妨げ、ユーザーの受容性を低下させる可能性がある。
- アシスト開始の最適化は、シームレスな人間とロボットの協働とデバイスの効果にとって重要である。
研究 の 目的:
- 機械的アシスト開始タイミングが運動精度、筋活動、および主観的なユーザーエクスペリエンスに及ぼす影響を調査すること。
- パフォーマンスと受容性を高めるための外骨格アシストの最適なタイミングウィンドウを特定すること。
主な方法:
- 健康な参加者20名が、外骨格アシストを用いて視覚誘導性の肘屈曲運動を行った。
- アシスト開始は、運動キューに対する-300ミリ秒から+300ミリ秒までの7つの条件で変化させた。
- 運動精度、筋活動、および主体感を測定した。
主要な成果:
- 早期のアシストは運動精度を向上させたが、遅延したアシストは主体感を高めた。
- アシストのタイミングによって、精度と主体感の間にはトレードオフが存在する。
- 最適なアシストタイミングウィンドウは、両方の要因のバランスを取る±100ミリ秒以内であると判断された。
結論:
- アシスト開始タイミングは、外骨格のパフォーマンスとユーザーの認識に大きく影響する。
- ±100ミリ秒のタイミングウィンドウは、運動精度と主体感の間の最適なバランスを提供する。
- 最適化されたタイミングは、実際のアプリケーションにおける外骨格の受容性と有効性を向上させるために重要である。
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