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Mechanical Description of a Hyper-Redundant Robot Joint Mechanism Used for a Design of a Biomimetic Robotic Fish
Author(s) -
M. Afolayan,
Danjuma Saleh Yawas,
C. O. Folayan,
S.Y. Aku
Publication year - 2012
Publication title -
journal of robotics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.303
H-Index - 14
eISSN - 1687-9619
pISSN - 1687-9600
DOI - 10.1155/2012/826364
Subject(s) - mechanism (biology) , peduncle (anatomy) , computer science , robot , fish <actinopterygii> , softening , joint (building) , natural rubber , turning radius , biomimetics , radius , simulation , materials science , marine engineering , structural engineering , mechanical engineering , composite material , artificial intelligence , physics , biology , fishery , anatomy , engineering , quantum mechanics , computer security
A biologically inspired robot in the form of fish (mackerel) model using rubber (as the biomimetic material) for its hyper-redundant joint is presented in this paper. Computerized simulation of the most critical part of the model (the peduncle) shows that the rubber joints will be able to take up the stress that will be created. Furthermore, the frequency-induced softening of the rubber used was found to be critical if the joints are going to oscillate at frequency above 25 Hz. The robotic fish was able to attain a speed of 0.985 m/s while the tail beats at a maximum of 1.7 Hz when tested inside water. Furthermore, a minimum turning radius of 0.8 m (approximately 2 times the fish body length) was achieved

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