They Walked Like Men

The Swirling Brain and some other readers submitted a CNN story about a Cornell robot named Toddler that learns to walk using a passive dynamic method that mimics the human gait. It takes about 20 minutes or 600 steps for the robot to learn to walk. The passive dynamic method allows the robots to expend much less energy than fully dynamic walking methods such as that used by the Honda Asimo, which expends 10 times the energy of a human to walk. Two other biped robots built by MIT and Delft are also described. For more, see the original Cornell press release. An NSF website also has more information, photos, and video of the robots.

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