A robot doggedly moves forward
The 165-pound (75-kilogram) BigDog represents a major step forward for legged locomotion, a problem whose complexity had frustrated engineers, even prompting some to believe it was impossible to solve. How, for example, could a robot know where to place each foot when walking? “The problem seemed too hard; it just didn’t seem like it could be done,” says Sanjiv Singh, a research professor with Carnegie Mellon University’s (C.M.U.) Robotics Institute in Pittsburgh who in 2005 and 2006 worked with BigDog creator Boston Dynamics to develop its computer vision system.
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