Witness small but mighty sumo robots pull, shove, trip and smack each other out of a battle ring.
If you haven’t seen robot sumo wrestling before, then you’re in for a treat. Trust me. Most robot versions of human sports are underwhelming, but as this video shows, the mechanical take on Japan’s national sport is very fast and very furious. And why? Because engineers aren’t trying to copy human performance. Instead, they concentrate on the qualities that robots excel at: namely lightning-fast decision-making and insane turns of speed.
The main thing to know about robot sumo wrestling is that once a match starts, humans are out of the loop. Each bot acts entirely autonomously based on certain pre-programmed behaviors, and although there are a few rules to be observed, the main restraints are simply on size and weight. Within these limits, bots can try a number of different tactics to try and knock their opponent out of the ring.
Most drive in different patterns, sometimes reacting to their opponent, sometimes not. The bot on the left, for example, is trying a common star pattern to out-flank its opponent, while the other robot is, uh, spinning round and round on the spot.
See Japanese sumo robots clash in ruthless combat
Robots are required to meet certain size and weight restrictions, but are otherwise allowed to implement various strategies and designs.
Although most robots featured in the video feature a simplistic design and implement some kind of star-shaped pattern, other robots feature large, movable flaps and instead opt to quickly rush in a straight line or spin around in circles.
Combatants are merely required to ring the opposing robot out in order to win, but some robots occasionally become dismantled or begin emitting smoke during the bouts.
Robot-sumo, or pepe-sumo, is a sport in which two robots attempt to push each other out of a circle (in a similar fashion to the sport of sumo). The robots used in this competition are called sumobots.[1]
Robot-sumo
The engineering challenges are for the robot to find its opponent (usually accomplished with infrared or ultra-sonic sensors) and to push it out of the flat arena. A robot should also avoid leaving the arena, usually by means of a sensor that detects the edge.
The most common "weapon" used in a sumobot competition is an angled blade at the front of the robot, usually tilted at about a 45-degree angle towards the back of the robot. This blade has an adjustable height for different tactics.
Robot-sumo is divided into classes, fought on progressively smaller arenas[2]:
Heavy-weight. Standard in the National Robotics Challenge. Robots may weigh up to 125 pounds (56.8 kg) and fit in a 2-foot cube (61 cm).
Light-weight. Also standard in the National Robotics Challenge. Robots may weigh up to 50 pounds (22.7 kg) and fit in a 2-foot cube (61 cm).
Standard class (sometimes named Mega-sumo) robots may mass up to 3 kg and fit inside a 20 cm by 20 cm box, any height.
Mini-sumo. Up to 500 g mass, 10 cm by 10 cm, any height.
Micro-sumo. Up to 100 g mass, must fit in a 5 cm cube.
Nano-sumo. Must fit in a 2.5 cm cube.
Femto-sumo. Must fit inside a 1 cm cube.
There is also Lego Mindstorms NXT sumo robots, in which NXT robots compete. The robots usually have to fit in a one-foot cube.
Classes are further divided into remote-controlled and autonomous robots. Also, there might be a tethered category (varies)
Sumo robots are built from scratch, from kits or from Lego components, particularly the Lego Mindstorms sets. Some sumo bots are built with only wood and motors for more of a challenge. The usual size for the wood is 12" by 12". It makes it hard to construct a really large robot with this piece of wood.
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| Science & Technology | Upload TimePublished on 27 May 2018 |
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