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Phys.org — Technology · September 24, 2026 · On the brief until October 8, 2026

Robot dog runs a marathon on a single battery charge

RoboticsMechanical Engineering
THE AI ANGLE
Reinforcing movement rules

Researchers built a four-legged robot named RAIBO2 that completed a marathon on a single battery charge. The robot combined lightweight legs, optimized motor-driving circuits, and machine learning to reduce energy loss. This design achieves a lower cost of transport than humans and travels three times farther than existing robots per charge.

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THE TEACHING ANGLE
How do we balance hardware weight reductions and software movement rules to lower the energy cost of transport in legged systems?

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