The Cubli: a cube that can jump up, balance, and ‘walk’

Reaction wheels rotate at high angular velocities and then brake suddenly, causing the Cubli to jump up.  In addition to balancing, the motor torques can also be used to achieve a controlled fall such that the Cubli can be commanded to fall in any arbitrary direction. Combining these three abilities — jumping up, balancing, and controlled falling — the Cubli is able to ‘walk’.

This amazing work was done at the Institute for Dynamic Systems and Control, ETH Zurich, Switzerland.

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