Spherical Robot Can Climb Over Obstacles

Spherical robots are nifty designs, and they have several advantages over their wheeled counterparts: they adapt well to all kids of terrain (even water) and are completely sealed, making them ideal for planetary exploration. The big sticking point (as it were) of spherical robots is that they tend to get hung up on obstacles. They move by changing their center of gravity, but they can’t shift their internal mass outside of their own diameter, which means that they have a finite amount of leverage to play with and therefore can’t get themselves over obstacles of a given height, no matter how much power their motors might output. LINK, Via: Youtube



Greg Schroll, a graduate student at Colorado State, has developed a spherical robot that uses gyroscopes instead of a movable mass for both drive power and steering. The gyros just have to sit there, and depending on which way they’re being spun, they exert torque on the robot to move it forward or turn it. The big advantage to this is that the torque exerted by the gyros increases as they spin faster, meaning that more powerful motor does increase the power of the robot, giving it the ability to literally jump out of holes:



Greg has been named one of Popular Science’s 10 Most Brilliant Innovators of 2009 for his work on this robot. LINK: Youtube