🤖🏓 Ace, the ping‑pong robot that could thrash you

Sony AI introduced Ace, a ping‑pong robot designed to compete under official rules and, according to a study published in Nature, capable of sustaining real rallies against human players. The system combines high-speed sensing, machine learning for real-time decision making, and an eight-joint robotic arm that adjusts the paddle angle and trajectory with millimeter-level speed.

In tests against five high-level amateur players, Ace won three of five matches; against two professionals from the Japanese league, Minami Ando and Kakeru Sone, it achieved one victory in seven encounters. Sony's team emphasizes that the robot doesn't win by power, but by control: it managed to return around 75% of the balls, keeping the point alive with precise, reactive shots.

What makes Ace relevant for robotics is not just scoring points, but demonstrating that a system can perceive spin and trajectory, reason, and act efficiently in a fast, variable physical environment. “This research has shown that an autonomous robot can actually win in a sporting competition, matching or exceeding human reaction time and decision-making ability in a physical space,” says Peter Dürr, director of Sony AI.

For the researchers, the advance opens possibilities beyond sport: training tools for athletes, improvements in industrial robotics, and applications in any task that requires fast perception and precise control in changing environments. As Peter Stone, Sony's chief AI scientist, points out, it is a step toward systems capable of operating at the level of a human expert in real-world situations.

Source: WIRED