arXiv:2512.17425cs.RO2025-12

个性化步态对机器人引导体验影响有限,用户适应性更重要。

The Impact of Gait Pattern Personalization on the Perception of Rigid Robotic Guidance: A Pilot User Experience Evaluation

  • 用数据驱动方法根据身体特征预测个人步态轨迹
  • 三种步态下舒适度与自然感无显著差异,但最后体验的更舒适
  • 用户对系统的适应比步态个性化更能影响体验

外骨骼在运动增强和日常辅助中广泛应用,通常通过强制特定运动学模式来降低受伤风险并激励用户持续活动。然而,人们对这种机器人施加的引导感知了解甚少,尤其是当步态模式个性化为个体独特步态时。由于个性化计算成本高,理解其主观影响对判断是否值得实施至关重要。本研究招募10名健康参与者,在多平面跑步机上的外骨骼系统中完成三种步态模式:个性化、标准及从公开数据库随机选取的步态。个性化通过数据驱动框架实现,基于步行速度、体型和人口统计信息预测髋、膝、骨盆轨迹;标准模式为该数据库中步态均值。每种条件后,参与者评估愉悦感、舒适度和自然感,并记录膝关节交互力。结果显示,三种模式下的主观评分无显著差异,所有轨迹均高精度执行。但最后体验的步态被显著评为更舒适和自然,表明存在系统适应现象。仅随机步态与标准步态间交互力有显著差异。个性化步态对短期用户体验的影响较小,远低于用户适应效应。研究强调设计个性化机器人控制器时应结合主观反馈并考虑用户适应性。

原文摘要 · Abstract (English)

Exoskeletons modulate human movement across diverse applications, from performance augmentation to daily-life assistance. These systems often enforce specific kinematic patterns to mitigate injury risks and motivate users to keep moving despite diminished capacity. However, little is known about users' perception of such robot-imposed guidance, especially when personalized to the uniqueness of individual human walk. Given the usually substantial computational cost for personalization, understanding its subjective impact is essential to justify its implementation over standard patterns. Ten unimpaired participants completed a within-subject experiment in a multi-planar treadmill-based exoskeleton that enforced three different gait patterns: personalized, standard, and a randomly selected pattern from a publicly available database. Personalization was achieved using a data-driven framework that predicts hip, knee, and pelvis trajectories from walking speed, anthropometric, and demographic data. The standard pattern was obtained by averaging gait patterns from the aforementioned database. After each condition, participants rated enjoyment, comfort, and perceived naturalness. Knee joint interaction forces were also recorded. Subjective ratings revealed no significant differences among patterns, despite all trajectories being executed with high accuracy. However, gait patterns experienced last were rated as significantly more comfortable and natural, indicating adaptation to the system. Higher interaction forces were observed only for the random vs. standard pattern. Personalizing gait kinematics had minimal short-term influence on user experience relative to the dominant effect of adaptation to the exoskeleton. These findings highlight the importance of integrating subjective feedback and accounting for user adaptation when designing personalized robot controllers.

外骨骼步态个性化用户体验人机交互

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