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It was almost ten years ago that researchers led by ETH robotics professor Raffaello D’Andrea made a splash with a robotic cube that was capable of balancing on its pivot.
Multiple reaction wheels in the cube’s interior were able to compensate for disturbances to a certain degree, making it harder to knock off balance. It was also able to jump up and move around via controlled falls.
One-Wheel Cubli. Image credit: ETH Zurich
Now it has a successor: the One-Wheel Cubli. That’s the name D’Andrea’s workshop gave to this new balancing artist. It only requires a single reaction wheel for its balancing act. Instead of additional wheels, it is equipped – like a tightrope walker – with a balancing pole.
As a result, the inertias differ in the two directions of motion, allowing the One-Wheel Cubli to stabilize both directions simultaneously. In the latest issue of Mechatronics, the researchers introduce the One-Wheel Cubli.
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