arXiv:2605.02513cs.RO2026-05

让外骨骼智能适应多种地形,实时生成自然步态。

Adaptive Gait Generation for Multi-Terrain Exoskeletons via Constrained Kernelized Movement Primitives

论文配图:Adaptive Gait Generation for Multi-Terrain Exoskeletons via Constrained Kernelized Movement Primitives
图 1 · 摘自论文原文
  • 用核化运动基元学习人体步态概率模型,保证动作可行性。
  • 结合摄像头环境信息,通过带路径点的约束优化实时调整步态。
  • 在真实外骨骼上验证,可稳定应对坡道、台阶和障碍物。

下肢外骨骼有望帮助行动障碍者重新行走,但其在真实环境中应用受限于缺乏有效的自适应步态规划。当前外骨骼仅适用于平坦地面,难以实现实时、环境感知且生理合理的步态生成。为此,本文提出一种基于核化运动基元(KMP)的自适应步态生成(AGG)框架,从少量人类示范中学习关节空间与任务空间的步态概率表示,保留自然步态特征并确保运动学可行性。同时,利用机载RGB-D相机提取环境信息,将步态调整建模为带路径点的线性约束优化问题。方法在仿真中验证了在平地、斜坡、台阶及障碍跨越等多种场景下的有效性。最终在商用下肢外骨骼上进行真实场景实验,结果证明该系统具备环境感知能力,可支持新一代智能外骨骼在日常生活中辅助残障人士行走。

原文摘要 · Abstract (English)

Lower limb exoskeletons (LLEs) present the potential to make motor-impaired individuals walk again. Their application in real-world environments is still limited by the lack of effective adaptive gait planning. Indeed, current exoskeletons are meant to walk only on a flat and even terrain. Generating environment-aware, physiologically consistent gait trajectories in real-time is an open challenge. To overcome this, we propose a novel Kernelized Movement Primitives (KMP)-based framework for adaptive gait generation (AGG) across multiple indoor terrains. The proposed approach learns a probabilistic representation of human gait in both the joint and task spaces from a limited number of human demonstrations, representing natural gait characteristics and ensuring kinematic feasibility. In addition, the learned trajectories are adapted using environmental information extracted from an onboard RGB-D camera by treating the AGG as a linearly constrained optimization problem with via-points. The proposed method has been thoroughly validated first in simulations for gait generation in different scenarios, such as flat-ground walking, slopes, stairs, and obstacles crossing. Finally, the effectiveness and robustness of the method have been demonstrated with experiments on a commercial LLE in real-world scenarios. The results obtained demonstrate the feasibility of an environment-aware gait planning system for a new generation of intelligent lower limb exoskeletons for assisting people with disabilities in their every-day life.

外骨骼步态生成环境感知运动基元

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