Robots may use their own whirring to echolocate and steer clear of collisions

The whirring, squeaking or clicking created by robots’ wheels, joints and motors usually are undesirable, and engineers work hard to minimise them. But a study team has discovered that they could be useful within an echolocation system to assist navigation and steer clear of crashes.

Most robots, whether they walk, roll or fly create some kind of background noise. Flying drones, specifically, are really noisy. Jesper Rindom Jensen at Aalborg University in Denmark and his colleagues suggest robots …

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