The Zhejiang University in Hangzhou, China, presented a ping pong playing robot, named Kong Robot, 1.6 metres tall (5 foot 2) and weighing 55 kg (121 lbs).
Keeping an eye on the ball and using a ping pong bat might be child's play for some humans, but it's a huge advance for machines.
"The robot arms are installed on foundation beds. They have a stable system, while ours are based on humanoid feet, which are unstable, when the arms are moving fast, robots could either fall or function inaccurately.
Thus what we need to solve is balancing of not only the whole body but also the 30 joints all over. At the same time there are only six to seven degree of freedom on robot arms, much less than ours. To sum up, we are facing more challenges on balancing and real-time control."
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