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Multi-environment robotic transitions through adaptive morphogenesis
Baines, R.; Patiballa, S.K.; Booth, J.; Ramirez, L.; Sipple, T.; Garcia, A.; Fish, F.; Kramer-Bottiglio, R. (2022). Multi-environment robotic transitions through adaptive morphogenesis. Nature (Lond.) 610(7931): 283-289. https://dx.doi.org/10.1038/s41586-022-05188-w
In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, meer
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| Auteurs | | Top |
- Baines, R.
- Patiballa, S.K.
- Booth, J.
- Ramirez, L.
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- Sipple, T.
- Garcia, A.
- Fish, F.
- Kramer-Bottiglio, R.
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| Abstract |
The current proliferation of mobile robots spans ecological monitoring, warehouse management and extreme environment exploration, to an individual consumer’s home. This expanding frontier of applications requires robots to transit multiple environments, a substantial challenge that traditional robot design strategies have not effectively addressed. For example, biomimetic design—copying an animal’s morphology, propulsion mechanism and gait—constitutes one approach, but it loses the benefits of engineered materials and mechanisms that can be exploited to surpass animal performance. Other approaches add a unique propulsive mechanism for each environment to the same robot body, which can result in energy-inefficient designs. Overall, predominant robot design strategies favour immutable structures and behaviours, resulting in systems incapable of specializing across environments. Here, to achieve specialized multi-environment locomotion through terrestrial, aquatic and the in-between transition zones, we implemented ‘adaptive morphogenesis’, a design strategy in which adaptive robot morphology and behaviours are realized through unified structural and actuation systems. Taking inspiration from terrestrial and aquatic turtles, we built a robot that fuses traditional rigid components and soft materials to radically augment the shape of its limbs and shift its gaits for multi-environment locomotion. The interplay of gait, limb shape and the environmental medium revealed vital parameters that govern the robot’s cost of transport. The results attest that adaptive morphogenesis is a powerful method to enhance the efficiency of mobile robots encountering unstructured, changing environments. |
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