arXiv:2604.09431cs.RO2026-04被引 2

用生理仿真+强化学习,让外骨骼自动生成个性化助力,无需反复试验。

Musculoskeletal Motion Imitation for Learning Personalized Exoskeleton Control Policy in Impaired Gait

论文配图:Musculoskeletal Motion Imitation for Learning Personalized Exoskeleton Control Policy in Impaired Gait
图 1 · 摘自论文原文
  • 通过生理合理模拟与强化学习结合,生成可扩展的控制策略。
  • 在多种步速下降低代谢成本,助力模式匹配已验证的人体实验结果。
  • 适用于健康与受损步态,自动实现不对称、缺陷特异性辅助。

设计通用化下肢外骨骼控制策略仍受限于海量数据采集或迭代优化,难以惠及临床人群。为此,我们提出一种设备无关框架,融合生理合理肌骨仿真与强化学习,实现对健康及临床人群的可扩展个性化外骨骼辅助。所生成的控制策略不仅产生符合生理的运动动力学,还能捕捉目标肌肉功能缺失下的代偿行为,构建健康与病态步态的统一计算模型。无需任务特定调参,生成的髋部与踝部助力扭矩与人类实验验证的先进水平一致,且在不同步行速度下持续降低代谢消耗。针对模拟的受损步态模型,学习到的控制策略可实现非对称、缺陷特异性的外骨骼辅助,提升能量效率与双侧运动对称性,而无需明确定义目标步态。结果表明,基于强化学习的生理合理肌骨仿真可成为跨健康与临床人群个性化外骨骼控制的可扩展基础,免除大量物理试验需求。

原文摘要 · Abstract (English)

Designing generalizable control policies for lower-limb exoskeletons remains fundamentally constrained by exhaustive data collection or iterative optimization procedures, which limit accessibility to clinical populations. To address this challenge, we introduce a device-agnostic framework that combines physiologically plausible musculoskeletal simulation with reinforcement learning to enable scalable personalized exoskeleton assistance for both able-bodied and clinical populations. Our control policies not only generate physiologically plausible locomotion dynamics but also capture clinically observed compensatory strategies under targeted muscular deficits, providing a unified computational model of both healthy and pathological gait. Without task-specific tuning, the resulting exoskeleton control policies produce assistive torque profiles at the hip and ankle that align with state-of-the-art profiles validated in human experiments, while consistently reducing metabolic cost across walking speeds. For simulated impaired-gait models, the learned control policies yield asymmetric, deficit-specific exoskeleton assistance that improves both energetic efficiency and bilateral kinematic symmetry without explicit prescription of the target gait pattern. These results demonstrate that physiologically plausible musculoskeletal simulation via reinforcement learning can serve as a scalable foundation for personalized exoskeleton control across both able-bodied and clinical populations, eliminating the need for extensive physical trials.

外骨骼强化学习肌骨仿真个性化控制

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