DyRET Robot “Teaches” Itself to Walk
-----------------
Games On Amazon:
https://amzn.to/2sDj0ZI
--------------------------------
THE SHAPE-SHIFTING ROBOT THAT EVOLVES BY FALLING DOWN
DON'T EVEN WORRY about Dyret the robot. At first glance, the scrawny quadruped looks pathetic, as it struggles to walk without collapsing. But keep watching, and you’ll see it start to improve—walking slowly, yet ever more proficiently. Dyret the robot is teaching itself to walk. Or even, according to a new class of robotics researchers, evolving.
Machines like Cassie the biped or SpotMini the robot dog are quickly mastering locomotion, thanks to line after line of meticulous code. But Dyret is different—it learns to walk on a certain surface, say carpet or ice, through trial and error. It adapts to its environment, not with lots of explicitly coded instructions like in traditional robots, but with special algorithms and limbs that automatically shorten and lengthen to adjust the robot’s center of gravity. It’s called evolutionary robotics, and it’s a potentially powerful way to get machines to master novel terrain on their own, no hand-holding required.
This robot from a University of Oslo research group would seem alarmingly life-like as it stumbles across the floor. Named DyRET, this quadruped teaches itself how to walk on different terrains, and even learns from its mistakes.
Of course, DyRET doesn’t always look like it’s got things figured out. When its designers set it on a new surface, the robot starts shifting everywhere. All four legs, which have joints that bend inwards, expand and contract in two places. DyRET tries out various-sized steps, too, and sometimes, the choices fail and it falls over. But DyRET’s motion sensor picks up on which choices provide the most stability, and the robot remembers the successful ones.
Once it has a terrain mastered, DyRET can also do something most toddlers don’t have figured out: Stop running around wildly when running low on energy. Moving long legs takes a lot of power. Long, swift strides is DyRET’s ideal state, but as the battery drains, it will shorten its legs to stop wasting so much energy on swinging a limb. Instead, the robot will try and compensate by moving shorter limbs faster.
DyRET’s constant evaluation of its space puts it in a tech category called “evolutionary robotics.” In nature, evolution happens over many generations of one species. Individuals don’t evolve, but the members with the best traits for surviving in a habitat pass those more-competent qualities onto their offspring. In evolutionary robotics, that (sometimes) decades-long process of assembling the most useful characteristics is condensed into just the one robot. Though built with all kinds of capabilities, the robot learns to rely on the ones that work best for the conditions it’s in.
DyRET Robot “Teaches” Itself to Walk
DyRET Robot “Teaches” Itself to Walk robot car | |
| 14 Likes | 14 Dislikes |
| 991 views views | 5.96K followers |
| Science & Technology | Upload TimePublished on 19 May 2018 |
Không có nhận xét nào:
Đăng nhận xét