So it’s amazing, and it really does seem like a human hand. But could your hand take a beating from a baseball bat and still work fine? DLR’s one can—thanks to those super-strong artificial tendons and clever spring assemblies that let the tendons “stretch”. The way the tendons are arranged (in what’s called an antagonistic manner) also means the “stiffness” or reboundability of each joint can be adjusted in real time by the arm’s computers. This trick even lets it safely catch a fast-moving ball (where previous robot appendages would suffer damage) because the springiness absorbs some of the incoming energy—just as your arm does. The DLR hand can also click its fingers, just for fun.
We admit, the video is a bit disconcerting without sound.