PhaseSync-Exo: 人間のクロックに同期した参照適応による動的歩行追従
PhaseSync-Exo: Human Clock Anchored Reference Adaptation for Dynamic Gait Tracking
2つのIMUとCNN-Transformerで歩行を再構成し、人間のタイミングに同期するアダプタを組み込んだ外骨格制御を提案。シミュレーションで位相誤差を大幅に低減し、転倒なしで追従を実現した。
著者: Kaijie Qi, Yuehan Wang, Kaiming Xu, Chong Li, Jiakuo Yu
分類: cs.RO
原文アブストラクト
Human-aware exoskeleton walking requires reconstructing gait, tracking diverse motions under dynamic constraints, and preserving human timing. We present PhaseSync-Exo, which combines two-IMU CNN-Transformer reconstruction, factorized amplitude-cadence retargeting with curriculum-trained recurrent control, and a human-clock-anchored adapter (HCA). HCA combines human-clock attraction with robot-relative feedback to adjust reference rate while preserving forward progression and continuity. The reconstruction module achieves a mean absolute error (MAE) of 3.24 degrees on a held-out recording, and the frozen tracking policy completes 356 of 357 amplitude-frequency trials. Two complementary dynamic comparisons isolate HCA's timing benefit without retraining. Against robot-relative correction, HCA reduces human-clock phase MAE from 95.55 degrees to 10.99 degrees, limiting reference drift. When human and delivered phases initially differ, it reduces phase MAE from 72.02 degrees to 13.90 degrees versus fixed-clock continuation. Compared with immediate phase reset, HCA reduces transient reference-tracking hip RMSE by 22.7% without reference jumps. All 420 timing rollouts complete without falls. These simulation results support continuous phase acquisition and sustained alignment to an independent human clock.