Researchers in South Korea have created a transport drone that can be used as a “flying shopping cart” to move cargo over uneven surfaces like stairs. Its numerous flexible rotors self-correct to maintain a level flight.
The prototype, created by a team at Seoul National University of Science and Technology, features a cargo platform atop a multirotor drone. The hovering aircraft is controlled by a human applying little force.
The team members showed how to use a centre of mass estimate method to maintain balance while carrying objects up and down stairs and placing boxes onto a hovering platform with a handle bar similar to one on a push shopping cart.
According to Lee Seung-jae, a professor of mechanical system design engineering, the drone reacts to human control using what the developers refer to as a physical human-robot interaction technique that anticipates human intentions for smooth flight, allowing it to move objects over uneven terrain or stairs when a wheeled cart cannot.
However, Lee’s team is more interested in applications that would use a drone with dependable horizontal stability without pitching and rolling than in creating a shopping cart that can be used over stairs.
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