Abstract
To look for the reason why the biped animal in nature can run with such high speed and to design a bionic biped prototype which can behave the high speed running and jumping ability, this paper takes the fastest bipedal animal in nature: ostrich as the research subject. Firstly, the body structure and motion characteristics of ostrich are investigated. Secondly, a simple mechanical structure of bionic ostrich robot is designed based on the above biological investigated results. The robot is under-actuated with one actuator each leg, with a spring on the tarsometatarsus and a torsion spring on the metatarsophalangeal joint at the foot end. And then the mechanical design of leg structure is optimized. Finally, the high-speed running and jumping running gait is planned, and comparative simulations are implemented with different design requirements among pure rigid and rigid-flexible coupling scheme, which are rigid, only with spring, only with torsion spring, and with spring and torsion spring both, in detail. Simulation results show that the rigid-flexible coupling design scheme and whole body motion coordination can achieve better high speed performance. It provides an insight for the design and control of legged robots.
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This research was funded by National Natural Science Foundation of China (62103036) and Fundamental Research Funds for the Central Universities (2022JBMC025).
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Chen, G., Wei, N., Li, J. et al. Design and simulation analysis of a bionic ostrich robot. Biomech Model Mechanobiol 21, 1781–1801 (2022). https://doi.org/10.1007/s10237-022-01619-9
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DOI: https://doi.org/10.1007/s10237-022-01619-9