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LLM 引导的四足机器人平面移动操作

LLM-guided Planar Loco-Manipulation for Quadruped Robots

Georges Jetti · Michael Khayyat · Jean-Pierre Sleiman · Stefano Arrigoni · Francesco Braghin

中文摘要

机器人导航通常假设存在一条无碰撞到达目标的路径;但在有可移动障碍物的杂乱环境中,到达目标可能需要物理交互。经典方案通过几何规则和任务特定逻辑编码这些行为,而基于学习的方法往往将决策空间限制为低维运动指令或预定义动作集。这里考虑更广的决策空间,联合选择技能、相关物体和几何目标。经 LoRA 在合成数据上微调的语言条件任务规划器,将自然语言任务和结构化场景表示映射为变长参数化动作序列,由底层强化学习策略执行。规划器学习交互式导航背后的几何关系,在交互式导航任务上优于经典规划器和提示式前沿模型。与从头训练的模型对比表明,当表示结构化时组合不需要预训练,而预训练能产生更可靠的几何目标。在低层,引入端到端全身平面推动策略,仿真成功率 93.3%,分层基线为 83.5%,完成时间缩短 60% 以上。在硬件上,分层结构在 45 次试验中 44 次给出正确技能组合,端到端成功 34/45。项目网站:https://anonymousprojects-dev.github.io/LLM-guided-LocoManipulation-Quadrupeds/

关键要点

  1. 01问题:杂乱环境中可移动障碍物使无碰撞路径不存在,需物理交互才能到达目标。
  2. 02方法:LoRA 微调的语言条件规划器输出变长参数化动作序列,由底层 RL 策略执行。
  3. 03结果:仿真推动成功率 93.3% 对分层基线 83.5%,完成时间缩短超 60%。
  4. 04结果:硬件 45 次试验中技能组合正确 44 次,端到端成功 34 次。
  5. 05局限:预训练对几何目标可靠性重要,结构化表示下组合可不依赖预训练。

解读

尚无解读。

原始英文摘要

arXiv:2610.40248v1 Announce Type: new Abstract: Robotic navigation typically assumes a collision-free route to the goal exists; in cluttered environments with movable obstacles, however, reaching the goal may require physical interaction. Classical solutions encode these behaviors through geometric rules and task-specific logic, while learning-based approaches often constrain the decision space to low-dimensional motion commands or predefined action sets. We instead consider a broader decision space, jointly selecting the skill, relevant object, and geometric target. Our language-conditioned task planner, fine-tuned with LoRA on synthetic data, maps natural-language tasks and a structured scene representation to variable-length sequences of parameterized actions, executed by low-level reinforcement-learning policies. The planner learns the geometric relations underlying interactive navigation and outperforms a classical planner and a prompted frontier model on interactive navigation tasks. Comparisons with models trained from scratch indicate that composition does not require pretraining when the representation is structured, whereas pretraining yields more reliable geometric targets. At the low level, we introduce an end-to-end whole-body planar pushing policy that achieves a 93.3% success rate in simulation, versus 83.5% for a hierarchical baseline, while reducing completion time by more than 60%. On hardware, the hierarchy yields the correct skill composition in 44/45 trials and end-to-end success in 34/45. Project website: https://anonymousprojects-dev.github.io/LLM-guided-LocoManipulation-Quadrupeds/

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