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Glossary / Robotics

Humanoid robot

A robot with a human-like body — torso, two arms and two legs. Its advantage is being able to use environments and tools built for people.

Starting with Waseda University's WABOT-1 in 1973, Honda's P2 in 1996 drew attention as a humanoid that walked on two legs without being tethered to external power or computers. Its development is described in a 1998 paper[1].

The human form lets a robot use stairs, corridors and tools made for people. Staying balanced on two legs, battery life and delicate handwork remain major challenges.

Related terms

  • Quadruped robotA robot that walks on four legs. It can move steadily over rough ground and stairs where wheels cannot go.
  • Reinforcement learningLearning better actions by trial and error, guided by a reward given according to the outcome, rather than by being told the right answer.
  • All-solid-state batteryA lithium-ion battery whose liquid electrolyte is replaced by a solid material. It is expected to be harder to ignite and to store more energy.