外观
论文arXiv 2610.2159013 天前
融合心理与身体参与度的上肢康复流理论多模态控制框架
原文链接:A Flow-Theoretic Multimodal Control Framework Fusing Mental and Physical Engagement for Upper-Limb Rehabilitation(arXiv 2610.21590 · 发布日期:2026-10-15)
A Flow-Theoretic Multimodal Control Framework Fusing Mental and Physical Engagement for Upper-Limb Rehabilitation
针对AAN难辨肌肉无力与心理不投入,融合EEG与sEMG参与度进行自适应阻抗控制,并在健康受试者上验证。
核心要点
- 现有仅依赖身体指标的AAN难区分肌肉无力与心理不投入。
- 框架融合EEG心理参与度和sEMG身体参与度,用模糊决策生成连续控制策略。
- 可在意图执行不匹配时提供前馈辅助,在心理分心时提高引导刚度。
- 较sEMG-only基线,能耗降71.9%,并保持精确轨迹跟踪。
验证范围与局限:仅在健康参与者的上肢外骨骼实验中,与sEMG-only AAN基线对比验证。
英文摘要 (Abstract)
While Assist-as-Needed (AAN) control aims to maximize user participation in robot-assisted training, existing methods relying solely on physical metrics cannot distinguish muscular inability from mental disengagement, leading to suboptimal interventions. To address this ambiguity, a Flow-theoretic multimodal AAN framework is proposed, fusing EEG-based mental engagement and sEMG-based physical engagement into an adaptive impedance control strategy. A four-quadrant fuzzy decision engine translates these dual physiological metrics into continuous control policies. This enables the upper-limb exoskeleton to inject feedforward assistance during intent-execution mismatch (e.g., motor output attenuation despite mental focus) and escalate guiding stiffness to penalize mental distraction. The framework was validated with healthy participants against a state-of-practice sEMG-only AAN baseline. Kinematically and mechanically, the proposed framework reduced robotic energy expenditure by 71.9% while maintaining precise trajectory tracking, confirming it elicited greater voluntary human effort. Physiologically, the system increased the time spent in the neuroplasticity zone (Flow State Ratio) from 4.6% to 42.8%. These results validate that decoupling and jointly regulating mental and physical states enhances the selectivity of robotic assistance, mitigating user passivity and sustaining the engagement crucial for motor learning.
作者:Jun Leng, Pengcheng Li, Hanze Wang, Shuxiang Guo, Junlin Jiang
来源
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