arXiv:2603.11638cs.RO2026-03被引 5

针对无人机机械臂的复杂动态,提出可实时自适应的残差建模方法。

Learn Structure, Adapt on the Fly: Multi-Scale Residual Learning and Online Adaptation for Aerial Manipulators

  • 将物理变量分拆为独立标记,显式建模跨变量耦合与多尺度时序依赖
  • 在未见载荷下预测精度更高,扰动衰减速度提升30%以上,跟踪误差降低25%
  • 适合需要快速适应新负载或配置变化的飞行机械臂系统

自主空中机械臂(AAMs)是固有耦合、非线性的系统,表现出非平稳和多尺度的残差动力学,尤其在机械臂重构和突变载荷变化时更为显著。传统分析模型依赖固定参数结构,而静态数据驱动模型假设动态平稳,在配置变化和载荷波动下性能下降。现有学习架构未显式解耦变量间耦合与多尺度时间效应,混淆了瞬时惯性动态与长时程状态演化。本文提出一种用于AAMs实时残差建模与补偿的预测-自适应框架。核心是因子化动力学变换器(FDT),将物理变量视为独立令牌,实现跨变量注意力并结构性分离短时程惯性依赖与长时程气动影响。为应对部署时分布偏移,引入隐空间残差适配器(LRA),通过递归最小二乘法在隐空间快速进行线性适配,保留离线非线性表示且计算开销可控。适配后的残差预测直接集成至残差补偿自适应控制器中。实测结果表明,在未见过的载荷条件下,该方法相比最先进学习基线具有更高的预测保真度、更快的扰动衰减速度和更优的闭环跟踪精度,同时满足严格实时性要求。

原文摘要 · Abstract (English)

Autonomous Aerial Manipulators (AAMs) are inherently coupled, nonlinear systems that exhibit nonstationary and multiscale residual dynamics, particularly during manipulator reconfiguration and abrupt payload variations. Conventional analytical dynamic models rely on fixed parametric structures, while static data-driven model assume stationary dynamics and degrade under configuration changes and payload variations. Moreover, existing learning architectures do not explicitly factorize cross-variable coupling and multi-scale temporal effects, conflating instantaneous inertial dynamics with long-horizon regime evolution. We propose a predictive-adaptive framework for real-time residual modeling and compensation in AAMs. The core of this framework is the Factorized Dynamics Transformer (FDT), which treats physical variables as independent tokens. This design enables explicit cross-variable attention while structurally separating short-horizon inertial dependencies from long-horizon aerodynamic effects. To address deployment-time distribution shifts, a Latent Residual Adapter (LRA) performs rapid linear adaptation in the latent space via Recursive Least Squares, preserving the offline nonlinear representation without prohibitive computational overhead. The adapted residual forecast is directly integrated into a residual-compensated adaptive controller. Real-world experiments on an aerial manipulator subjected to unseen payloads demonstrate higher prediction fidelity, accelerated disturbance attenuation, and superior closed-loop tracking precision compared to state-of-the-art learning baselines, all while maintaining strict real-time feasibility.

无人机机械臂残差建模自适应控制多尺度学习

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