強烈的觸覺或力回饋對於虛擬實境（VR）沉浸感至關重要，但需要消耗大量電力。雖然從使用者身體運動中收集能量提供了一種替代方案，但典型的動能到電能的轉換方法限制了系統級的能量效率；其他方法則存在瞬時功率輸出低、缺乏能量儲存或分配等問題。此外，在能量採集過程中，無論能量的輸送和儲存如何，都需要觸覺回饋才能提供一致的VR回饋。我們提出了一種名為Harvtics的上半身穿戴系統，該系統從手臂運動中採集動能，將其儲存為彈性勢能，並將其分配給各種模組化的觸覺設備，這些設備也以彈性勢能的形式在局部儲存能量。它避免了能量域轉換以減少能量損失，並將回饋呈現與能量收集中的能量輸送解耦，從而與 VR 回饋保持一致。我們評估了瞬時功率輸出、系統級能量效率以及組件級能量和力損失，以驗證 Harvtics的表現，並進行了一項 VR 研究，以驗證來自能量收集和設備的觸覺回饋增強了沉浸感，證明了系統的實用性和應用性。

Intense haptic or force feedback is critical for VR immersion but requires high power consumption.While energy harvesting from users’ physical movements offers an alternative, typical kinetic-to-electrical conversion methods limit system-level energy efficiency;others suffer from low instantaneous power output, or lack energy storage or distribution.Furthermore, haptic feedback during har-
vesting, independent of energy delivery and storage, is required for consistent VR feedback.We propose an upper-body suit system, Harvtics, that harvests kinetic energy from arm movements, stores it as elastic potential energy, and distributes it to various modular haptic devices that also store energy as elastic potential energy locally.It avoids energy domain transformations to reduce energy loss and decouples feedback rendering from energy delivery in harvesting, aligning with VR feedback.We evaluated instantaneous power output, system-level energy efficiency, and component-level energy and force losses to validate Harvtics performance, and conducted a VR study to verify that haptic feedback from harvesting and devices enhances immersion, demonstrating the system practicality and applications.

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