油圧機械における力とペイロード推定のためのキャリブレーションされた動的モデリング
Calibrated Dynamic Modeling for Force and Payload Estimation in Hydraulic Machinery
油圧ショベルに後付け可能な2D力・ペイロード推定アルゴリズムを提案し、最小限のキャリブレーションで1%のペイロード精度と力の方向精度13度・大きさ精度383Nを達成した。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
3. 技術・手法の肝は?
4. どうやって有効だと検証した?
5. 議論はある?
6. 次に読むべき論文は?
※ AIが要旨から生成した要約です。正確性は原文をご確認ください。
著者: Lennart Werner, Pol Eyschen, Sean Costello, Pierluigi Micarelli, Marco Hutter
分類: cs.RO
原文アブストラクト
Accurate real-time estimation of end effector interaction forces in hydraulic excavators is a key enabler for advanced automation in heavy machinery. Accurate knowledge of these forces allows improved, precise grading and digging maneuvers. To address these challenges, we introduce a high-accuracy, retrofittable 2D force- and payload estimation algorithm that does not impose additional requirements on the operator regarding trajectory, acceleration or the use of the slew joint. The approach is designed for retrofittability, requires minimal calibration and no prior knowledge of machine-specific dynamic characteristics. Specifically, we propose a method for identifying a dynamic model, necessary to estimate both end effector interaction forces and bucket payload during normal operation. Our optimization-based payload estimation achieves a full-scale payload accuracy of 1%. On a standard 25 t excavator, the online force measurement from pressure and inertial measurements achieves a direction accuracy of 13 degree and a magnitude accuracy of 383 N. The method's accuracy and generalization capability are validated on two excavator platforms of different type and weight classes. We benchmark our payload estimation against a classical quasistatic method and a commercially available system. Our system outperforms both in accuracy and precision.
