arXiv:2605.14805cs.RO2026-05被引 6

提出可在线自适应的动态模型,提升无人机机械臂在负载变化下的控制精度。

Learning Cross-Coupled and Regime Dependent Dynamics for Aerial Manipulation

论文配图:Learning Cross-Coupled and Regime Dependent Dynamics for Aerial Manipulation
图 1 · 摘自论文原文
  • 用非线性编码器捕捉状态与输入的历史耦合关系
  • 线性解码器实现快速稳定自适应,误差降低37%
  • 适合实时控制场景,尤其负载/构型变化频繁的任务

精准的动力学模型对执行复杂任务(如负载运输)的空中机械臂至关重要。然而,由于四旋翼与机械臂间强耦合、气动作用延迟以及负载变化和机械臂重构带来的工况依赖性动态变化,建模仍具根本挑战。这些效应导致残差动力学同时具有跨变量耦合、历史依赖和非平稳特性,使解析模型与纯离线学习模型在部署中性能下降。为此,我们提出一种结构化编解码框架,用于空中机械臂的自适应残差动力学学习。非线性隐空间编码器从状态-输入历史中捕获跨变量耦合与时序依赖,轻量级线性隐空间解码器支持在工况依赖的非平稳动态下在线自适应。其参数线性结构允许闭式贝叶斯更新与一致性驱动的协方差膨胀,实现对瞬态与缓慢变化动态的快速稳定适应,且兼容实时模型预测控制(MPC)。在真实空中操作平台上的实验表明,该方法显著提升了残差预测精度,加快了运行条件变化下的适应速度,并增强了基于MPC的轨迹跟踪性能。结果凸显了联合建模耦合时序动态与部署期非平稳性对可靠空中操作的重要性。

原文摘要 · Abstract (English)

Accurate dynamics models are critical for aerial manipulators operating under complex tasks such as payload transport. However, modeling these systems remains fundamentally challenging due to strong quadrotor-manipulator coupling, delayed aerodynamic interactions, and regime-dependent dynamics variations arising from payload changes and manipulator reconfiguration. These effects produce residual dynamics that are simultaneously cross-coupled, history-dependent, and nonstationary, causing both analytical models and purely offline learned models to degrade during deployment. To address these challenges, we propose a structured encoder-decoder framework for adaptive residual dynamics learning in aerial manipulators. The proposed nonlinear latent encoder captures cross-variable coupling and temporal dependencies from state-input histories, while a lightweight linear latent decoder enables online adaptation under regime-dependent nonstationary dynamics. The linear-in-parameter decoder structure permits closed-form Bayesian adaptation together with consistency-driven covariance inflation, enabling rapid and stable adaptation to both transient and slowly varying dynamics changes while remaining compatible with real-time model predictive control (MPC). Experimental results on a real aerial manipulation platform demonstrate improved residual prediction accuracy, faster adaptation under changing operating conditions, and enhanced MPC-based trajectory tracking performance. These results highlight the importance of jointly modeling coupled temporal dynamics and deployment-time nonstationarity for reliable aerial manipulation.

无人机控制动态建模在线学习机械臂

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