arXiv:2505.19463cs.RO2025-05被引 4

让机器人像人一样动,还不会摔倒。

SMAP: Self-supervised Motion Adaptation for Physically Plausible Humanoid Whole-body Control

  • 用自监督编码器提取人体动作基础单元,适配成机器人可执行动作
  • 训练速度更快,面对复杂动作时更稳定,仿真与实机验证均优于现有方法
  • 适合研究全身控制、人形机器人运动规划的开发者参考

本文提出SMAP框架,使现实世界中的人形机器人在执行类人动作时保持稳定。当前方法通过强化学习使用大量重定向的人体数据训练策略,但因人体与人形机器人运动特性差异大,直接使用重定向动作会降低训练效率和稳定性。为此,我们引入SMAP,一种全新的全身跟踪框架,弥合人体与人形机器人动作空间的差距,实现高精度动作模仿。核心思想是利用向量量化周期自动编码器捕捉通用原子行为,并将人体动作适配为物理上合理的机器人动作。该适配显著加速训练收敛,提升处理新动作或挑战性动作时的稳定性。随后,我们采用特权教师模型,通过提出的解耦奖励机制,将精准模仿技能蒸馏至学生策略。我们在仿真与真实世界中进行实验,证明了SMAP在稳定性与性能上优于当前最优方法,为推进人形机器人全身控制提供了实用指导。

原文摘要 · Abstract (English)

This paper presents a novel framework that enables real-world humanoid robots to maintain stability while performing human-like motion. Current methods train a policy which allows humanoid robots to follow human body using the massive retargeted human data via reinforcement learning. However, due to the heterogeneity between human and humanoid robot motion, directly using retargeted human motion reduces training efficiency and stability. To this end, we introduce SMAP, a novel whole-body tracking framework that bridges the gap between human and humanoid action spaces, enabling accurate motion mimicry by humanoid robots. The core idea is to use a vector-quantized periodic autoencoder to capture generic atomic behaviors and adapt human motion into physically plausible humanoid motion. This adaptation accelerates training convergence and improves stability when handling novel or challenging motions. We then employ a privileged teacher to distill precise mimicry skills into the student policy with a proposed decoupled reward. We conduct experiments in simulation and real world to demonstrate the superiority stability and performance of SMAP over SOTA methods, offering practical guidelines for advancing whole-body control in humanoid robots.

人形机器人动作模仿自监督学习全身控制

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