Flying Robot

If your robot doesn’t weigh anything, you don’t have to worry about falling over, Researchers from the University of Tokyo have developed a quadrotor with legs called Aerial-Biped. Designed primarily for entertainment, Aerial-Biped enables “a richer physical expression” by automatically generating walking gaits in sync with its quadrotor body.

Until someone invents a robot that can moonwalk, you can model a gait that appears normal by simply making sure that the velocity of a foot is zero as long as it’s in contact with the ground. The Aerial-Biped robot learns how to do this through reinforcement learning in a physics simulator, and the policy transfers to the robot well enough that the legs can appear to walk as the quadrotor moves.


The lead author Azumi Maekawa from the University of Tokyo explained: . “We were inspired by bipedal robots that use invisible force to get stability, such as Magdan, created by Tomotaka Takahashi (an electromagnet on the bottom of its feet lets it walk on a metal plate), and BALLU (which uses buoyancy of a helium-filled balloon). The foot trajectory generation method is based on the assumption that one of the key features of walking (or at least the appearance of walking) is that the velocity of the foot in contact with the ground is zero. The goal is to develop a robot that has the ability to display the appearance of bipedal walking with dynamic mobility, and to provide a new visual experience.