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arXiv 2407.12964cs.ROcs.AI
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学习四旋翼动力学的长时域预测

Learning Long-Horizon Predictions for Quadrotor Dynamics

New York University, Tandon School of Engineering(纽约大学坦登工程学院);Autonomous Robotics Research Center-Technology Innovation Institute(自主机器人研究中心-技术创新研究院)

Pratyaksh Prabhav Rao, Alessandro Saviolo, Tommaso Castiglione Ferrari, Giuseppe Loianno

AI总结:

本文研究四旋翼长时域预测动力学的关键设计,提出解耦学习方法,通过序列建模和多步损失减少复合误差,实验验证其精度与模块化优势。

摘要:

系统动力学的精确建模对于实现机器人系统的高性能规划与控制至关重要。尽管现有的数据驱动方法为动力学建模提供了一种有前景的途径,但其准确性仅限于短预测时域,忽视了较长预测时域内复合预测误差的影响。缓解这些累积误差的策略仍未得到充分探索。为弥补这一差距,本文研究了高效学习四旋翼长时域预测动力学的关键设计选择。具体而言,我们分析了多种架构、历史数据和多步损失公式的影响。我们表明,与其他类型的解决方案相比,序列建模技术在最小化复合误差方面展现出优势。此外,我们提出了一种新颖的解耦动力学学习方法,该方法进一步简化了学习过程,同时增强了方法的模块化性。在真实四旋翼数据上进行的大量实验和消融研究证明了所提出方法的通用性和精确性。我们的成果为提升学习到的四旋翼动力学在规划与控制中的长期预测准确性提供了若干见解和方法。

英文摘要:

Accurate modeling of system dynamics is crucial for achieving high-performance planning and control of robotic systems. Although existing data-driven approaches represent a promising approach for modeling dynamics, their accuracy is limited to a short prediction horizon, overlooking the impact of compounding prediction errors over longer prediction horizons. Strategies to mitigate these cumulative errors remain underexplored. To bridge this gap, in this paper, we study the key design choices for efficiently learning long-horizon prediction dynamics for quadrotors. Specifically, we analyze the impact of multiple architectures, historical data, and multi-step loss formulation. We show that sequential modeling techniques showcase their advantage in minimizing compounding errors compared to other types of solutions. Furthermore, we propose a novel decoupled dynamics learning approach, which further simplifies the learning process while also enhancing the approach modularity. Extensive experiments and ablation studies on real-world quadrotor data demonstrate the versatility and precision of the proposed approach. Our outcomes offer several insights and methodologies for enhancing long-term predictive accuracy of learned quadrotor dynamics for planning and control.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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