Fingertip sensor-less force control by articulated two-fingered robotic hand using twisted round-belt actuator

Autor: Kohei ASAUMI, Kento HOSONUMA, Takahiro INOUE
Jazyk: japonština
Rok vydání: 2022
Předmět:
Zdroj: Nihon Kikai Gakkai ronbunshu, Vol 88, Iss 906, Pp 21-00033-21-00033 (2022)
Druh dokumentu: article
ISSN: 2187-9761
DOI: 10.1299/transjsme.21-00033
Popis: This paper proposes a novel sensor-less force control method by an underactuated wire-driven robotic finger. This robotic hand contains Twisted round-belt actuator that yields contraction forces produced by twisting an elastic round-belt. This mechanism provides high-resolution control of both the force and joint angle in manipulation tasks. First, we explain the basic mechanism of the articulated two-fingered robotic hand having Twisted round-belt actuator, and mention its features by some experiments. Second, we show experimental results of round-belt contraction force on the basis of two parameters such as number of twist and tension of the belt, resulting in fingertip force estimation which is applicable to sensor-less force control. Finally, we apply this estimation method to the robotic hand, and experimentally demonstrate secure force control in sensor-less configuration at the fingertip.
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