TY - GEN
T1 - Insect-Tarsus-Inspired Legs
T2 - 9th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2022
AU - Ishibashi, Keitaro
AU - Ishii, Hiroyuki
N1 - Funding Information:
*Research supported by JST, Casio Science Promotion Foundation, Waseda University Grant for Special Research Projects (Project number: 2018B-155, and 2020C-246), and JSPS KAKENHI (Grant Numbers: 15K00366, 17H00767, and 19H01130).
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - This study proposes an insect-Tarsus-inspired leg for a small tree-climbing robot. The expansion of the range of the grippable diameter is a concern for small tree-climbing robots; in this study, we focus on the leg structure of insects that can grip trees of various diameters and reproduce it. The shape memory alloy actuator and superelastic alloy sheet are used to reproduce the bending and extension of the insect tarsus, which is important for gripping. The developed robot with four insect-Tarsus-inspired legs exhibits excellent gripping ability in a cylinder gripping experiment: The range of grippable diameter is 40-250 mm, and the gripping force is 1 N or more. This robot weighs 5.8 g with dimensions of W55 x L60 x H55 mm, and is compact and lightweight; it can exert a gripping force 17 times its own weight over a wide range of diameters. A similar gripping force is confirmed when the Kitayama cedar is gripped. This weight-To-payload ratio is significantly larger than that of conventional tree-climbing robots. This indicates that insect-Tarsus-inspired legs can contribute to improving the gripping ability of small tree-climbing robots.
AB - This study proposes an insect-Tarsus-inspired leg for a small tree-climbing robot. The expansion of the range of the grippable diameter is a concern for small tree-climbing robots; in this study, we focus on the leg structure of insects that can grip trees of various diameters and reproduce it. The shape memory alloy actuator and superelastic alloy sheet are used to reproduce the bending and extension of the insect tarsus, which is important for gripping. The developed robot with four insect-Tarsus-inspired legs exhibits excellent gripping ability in a cylinder gripping experiment: The range of grippable diameter is 40-250 mm, and the gripping force is 1 N or more. This robot weighs 5.8 g with dimensions of W55 x L60 x H55 mm, and is compact and lightweight; it can exert a gripping force 17 times its own weight over a wide range of diameters. A similar gripping force is confirmed when the Kitayama cedar is gripped. This weight-To-payload ratio is significantly larger than that of conventional tree-climbing robots. This indicates that insect-Tarsus-inspired legs can contribute to improving the gripping ability of small tree-climbing robots.
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U2 - 10.1109/BioRob52689.2022.9925482
DO - 10.1109/BioRob52689.2022.9925482
M3 - Conference contribution
AN - SCOPUS:85141860029
T3 - Proceedings of the IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics
BT - BioRob 2022 - 9th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics
PB - IEEE Computer Society
Y2 - 21 August 2022 through 24 August 2022
ER -