The video explains everything about the magic cube .
A small cube that can balance on its edges and rotate on its corners, as well as walk along, has been created by Swiss engineers.
Cubli measures just 15cm in height and uses reaction wheels that rotate at high angular velocities to enable it to jump up and travel in a given direction.
While the clever cube is currently a prototype, some researchers hope to use its method of moving along for planetary exploration vehicles and even self-assembling robots
Swiss researchers have created a metallic cube that can “walk” across a surface. Staff at the Federal Institute of Technology Zurich crammed a series of inertia sensors and constantly-spinning rotors (called reaction wheels) into a 15-centimeter cube, dubbed Cubli, that enable the contraption to move around on its own. When one or more of the weighted rotors abruptly stops spinning, the machine sort of jumps on its edge — all thanks to centrifugal force. Once upended, the rotors act like a gyroscope to maintain Cubli’s position. Halt another wheel and things get really crazy: the device defies gravity, tipping up and balancing on one of its eight corners. By repeating these motions in succession, the gizmo uses a series of controlled falls to slowly hop across a surface. In terms of practical applications, the Swiss researchers said this tech could aid in remote planetary exploration, possibly giving the Curiosity rover and its ilk some company. All noble goals, but for now the lab says that Cubli is just a high-tech toy. And that? That’s perfectly fine.
The sensors are used to estimate the tilt of the cube and provide the angular velocity – the angular speed at which an object is rotating along with the direction in which it is rotating – of the reaction wheels, which are mounted on three faces of the cube.
The reaction wheels can brake suddenly to cause the Cubli to jump up from its ‘resting position’ onto one of its edges without external support, as it transfers momentum from the wheel’s to the cube’s body.
Balancing on its corner is achieved by two ‘jump up’ manoeuvres.
The first one raises the Cubli from one of its faces so that it can balance on its edge, while the second one raises it from the edge to one of its corners.
Cubli can detect disturbances to adjust its position while balancing on its corner, and also rotate on the spot.
The miniature mechanical device is able to use a ‘controlled fall’ to travel in a certain direction and when it combines its jumping, balancing and falling moves, it can ‘walk’ across a surface, the scientists said.
While the technology could be used in future space explorer vehicles and self-assembling robots, the ‘cool little cube’ was simply designed to ‘jump up, balance and walk,’ its creators said.
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