閉ループダイナミクスに基づく油圧ショベルの高精度・高効率軌道追従
High-Precision and High-Efficiency Trajectory Tracking for Excavators Based on Closed-Loop Dynamics
油圧ショベルの非線形ダイナミクスに対処するため、モデルベース学習と閉ループダイナミクスを組み合わせた軌道追従手法EfficientTrackを提案し、シミュレーションと実機で高精度・高効率を実証した。
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著者: Ziqing Zou, Cong Wang, Yue Hu, Xiao Liu, Bowen Xu, Rong Xiong, Changjie Fan, Yingfeng Chen, Yue Wang
分類: cs.RO
原文アブストラクト
The complex nonlinear dynamics of hydraulic excavators, such as time delays and control coupling, pose significant challenges to achieving high-precision trajectory tracking. Traditional control methods often fall short in such applications due to their inability to effectively handle these nonlinearities, while commonly used learning-based methods require extensive interactions with the environment, leading to inefficiency. To address these issues, we introduce EfficientTrack, a trajectory tracking method that integrates model-based learning to manage nonlinear dynamics and leverages closed-loop dynamics to improve learning efficiency, ultimately minimizing tracking errors. We validate our method through comprehensive experiments both in simulation and on a real-world excavator. Comparative experiments in simulation demonstrate that our method outperforms existing learning-based approaches, achieving the highest tracking precision and smoothness with the fewest interactions. Real-world experiments further show that our method remains effective under load conditions and possesses the ability for continual learning, highlighting its practical applicability. For implementation details and source code, please refer to https://github.com/ZiqingZou/EfficientTrack.
