arXiv:2511.08377cs.ROcs.HC2025-11

通过跳跃-漂移模型捕捉微小动作,提前识别操作者意图变化。

Human Motion Intent Inferencing in Teleoperation Through a SINDy Paradigm

  • 用跳变-漂移-扩散方程建模连续与突变动作
  • 在600条轨迹上实现意图跳变的早期检测
  • 适用于无结构场景下的在线意图推断

在遥操作中,意图推断对对齐操作者目标与机器人协作至关重要。然而,现有方法常忽略细微运动——这些可能是意图突变的强指标。本文提出Psychic框架,通过跳变-漂移-扩散随机微分方程建模连续与非连续动力学。利用克兰默-莫伊尔(Kramers-Moyal, KM)系数检测轨迹中的跳跃,并结合统计异常值检测算法识别目标状态转移。基于检测到的跳变,采用稀疏非线性动力学识别(SINDy)模型,将目标转移作为控制输入,推断未结构化场景中的操作者运动行为。实验在600条免手持遥操作轨迹上进行,验证了Psychic在离线与在线学习下的有效性。结果表明,该框架可生成概率可达集,并优于负对数似然模型。代码已开源。

原文摘要 · Abstract (English)

Intent inferencing in teleoperation has been instrumental in aligning operator goals and coordinating actions with robotic partners. However, current intent inference methods often ignore subtle motion that can be strong indicators for a sudden change in intent. Specifically, we aim to tackle 1) if we can detect sudden jumps in operator trajectories, 2) how we appropriately use these sudden jump motions to infer an operator's goal state, and 3) how to incorporate these discontinuous and continuous dynamics to infer operator motion. Our framework, called Psychic, models these small indicative motions through a jump-drift-diffusion stochastic differential equation to cover discontinuous and continuous dynamics. Kramers-Moyal (KM) coefficients allow us to detect jumps with a trajectory which we pair with a statistical outlier detection algorithm to nominate goal transitions. Through identifying jumps, we can perform early detection of existing goals and discover undefined goals in unstructured scenarios. Our framework then applies a Sparse Identification of Nonlinear Dynamics (SINDy) model using KM coefficients with the goal transitions as a control input to infer an operator's motion behavior in unstructured scenarios. We demonstrate Psychic can produce probabilistic reachability sets and compare our strategy to a negative log-likelihood model fit. We perform a retrospective study on 600 operator trajectories in a hands-free teleoperation task to evaluate the efficacy of our opensource package, Psychic, in both offline and online learning.

遥操作意图推断动态建模

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