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“Nature is a rich source of design ideas,” notes Bruno Siciliano, robotics researcher and dissemination officer for EURON, a community of the best European robotics groups and resources in research, industry and education.
“Nature has already solved a lot of the problems that robotics researchers encounter, so it is a good place to go for ideas,” he says.
Robot imitating life
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The fish can move 20 inches a second and, at slower speeds, has a battery that will last five hours. The researchers built three fish as an attraction for the London Aquarium, where they have proved a very popular feature.
But ultimately the design could be used for seabed exploration, to study pipelines for leaks, or even be used for intelligence gathering. The fish can avoid obstacles and swim entirely independently. The researchers hope to increase the robot’s intelligence so that it can hook itself up to a power source when it is time for a recharge.
“Sure, it would be possible to design a standard submarine robot to do similar jobs, but by replicating the designs from nature, researchers can use the advantages of that design,” Siciliano says. “In the case of fish, they move through the water easily, without using much energy. As the design of robot fish improves, it will approach that level of efficiency.”
Snakes and spiders
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The advantage of the snake is that it can move through small spaces and is extremely flexible, though at 3 metres long and 70kg it deserves its moniker as the heftiest of all snakes. It was designed by SINTEF in Norway. Spiders, too, have provided inspiration to researchers.
Germany-based Fraunhofer Institute for Intelligent Analysis and Information Systems in Sankt Augustin has designed three: The Amos, Morpheus and TED.
The bots are designed as experimental prototypes for neural perception and networking, an essential element of multi-legged systems. Besides, they open the prospect of highly mobile, stable robots that can traverse a wide variety of terrains, even stairs, without difficulty.
Games robots play
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In the games domain, foozball (table football) has proved a popular choice among researchers. In this case, a robot controls one side of the game and the human player competes against the robot.
It is more than just fun, though, because designing an effective robot foozball player demands very rapid processing and fast reaction motors. It is a profoundly difficult problem but, once solved, it can feed into the wider stream of robotics research.
Education toys like the Robota dolls, a family of mini humanoid robots, can engage in complex interaction with humans, involving speech, vision and body imitation.
The oddest of them all
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Finally, a robot that looks perhaps oddest of all, the e-Puck, is a very small, disc-like robot platform. It contains sound and proximity sensors, a camera, Bluetooth capability and accelerometer; all in a tiny robot with the same volume as a computer mouse. It is an incredibly flexible platform.
Through all of this, one thing is certain: The imagination of engineers will continue to create bizarre and beautiful robotic entities.
“We have a whole range of fields and applications in robotics, and in the future, expect many more designs for each of these domains,” Siciliano says.
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