自転車シミュレータのリーン動作に適用した直並列統合非線形弾性アクチュエータ
Series-Parallel Integrated Nonlinear Elastic Actuator applied to the lean motion of a bicycle simulator
単一の弾性要素が直列と並列の両方の役割を同時に果たす新しいアクチュエータSPINEAを提案し、高トルクと精密な力制御を両立させて、ハプティック自転車シミュレータのリーン動作に応用した。
詳しい要約
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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？
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著者: Christina Kohler, Michiel Plooij, Nuria Peña-Perez, Arend L. Schwab, Heike Vallery
分類: cs.RO
原文アブストラクト
Designing robots for high-torque, high-fidelity haptic interaction is challenging. Parallel Elastic Actuators (PEAs) use elastic elements in parallel to smaller motors to complement torques, and Series Elastic Actuators (SEAs) use elastic elements in series to decouple motor impedance and improve force control. Recent work combines SEAs and PEAs to obtain both benefits but requires separate elastic elements or clutching. This paper presents the Series Parallel Integrated Nonlinear Elastic Actuator (SPINEA), which merges SEA and PEA such that a single elastic element takes on dual roles simultaneously, parallel and series. This is achieved by a nonlinear transmission in which the motor and load have misaligned rotation axes and are elastically connected. This geometry enables both high peak torque and precise torque tracking. We apply SPINEA to actuate lean of a haptic bicycle simulator, which requires high moments and precise rendering for safe and realistic rider interactions. We realized a prototype and performed experiments, both with an external excitation setup and with riders cycling. Our results confirm SPINEA's low impedance and precise torque tracking, up to 4.25 Hz with the bicycle frame fixed and up to 4 Hz with riders. The benefits may transfer to other applications requiring compact, high-performance actuation.
