Robotics
Bipedal robot
A bipedal robot is a robot that moves on two articulated legs, actively managing its balance with every step. Unlike a wheeled robot, it is never passively stable: it falls as soon as its motors stop correcting its posture, several hundred times per second.
Updated on 12 October 2026 · Libella Robotics · Also known as: biped, two-legged robot, bipedal walking
Bipedal walking is the hardest problem in mobile robotics. The robot has to predict where to place its foot, absorb irregularities in the floor and compensate in real time for external forces: contact with a visitor, a cable, a carpet tile. The control loops that make this possible typically run at several hundred hertz.
This difficulty explains the price, and it also explains why bipeds only became available for hire from 2024-2025: advances in reinforcement learning, more than in mechanics, are what made walking reliable outside the laboratory.
The practical consequence for an event: a biped needs a smooth, clear floor and an operator present at all times. A trade show floor with taut carpet is fine; gravel, duckboards or a very uneven floor are not. This is checked in advance, not on the day.
Key facts
| Balance | Active: continuously corrected by the motors |
|---|---|
| Floor required | Flat, smooth, clear (taut carpet: yes) |
| Supervision | Operator present throughout the booking |