Simulating an earthworm's movement is difficult, but could have very useful real-world applications.
Though specific features will vary by species, many earthworms are excellent burrowers,"They are very flexible and move through spaces that might be difficult to access," comments Elsa Arrázola-Vásquez, who researches soil management at the Swedish University of Agricultural Sciences.The progress in replicating these functions robotically has been incremental.
The innovation means his creation more closely represents how an earthworm's muscles move, and allows for more varied movement. Like the other projects in her lab at IIT, this is genuinely bioinspired, says biologist-turned-roboticist Barbara Mazzolai. This means that developing the prototype required a fundamental understanding of earthworm biology, rather than just mimicking its shape.
"If you look at the basic building blocks of these robots, these are pneumatic artificial muscles, which are essentially rubber with a cleverly designed fibre mesh around it," Mr Trivedi explains.
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