Joint Motor · serves as: Joint Actuation, Locomotion Drive, Manipulator Drive, Precision Joint Motion. · compatible with: Humanoid, Biped.
Which group Xiaomi Self-Developed Humanoid Joint Motor (CyberOne) belongs to and how it is built
A joint motor is a drive motor placed directly at a robot's articulated joint, responsible for generating torque and achieving precise angular positioning of each degree of freedom. Typically implemented as brushless BLDC motors or servomotors, they are commonly integrated with harmonic or planetary gearboxes and encoders. Joint motors are fundamental to robotic manipulators, exoskeletons, and humanoid robot limbs.
Integrated PMSM (Permanent Magnet Synchronous Motor) is a hardware design class that combines a permanent magnet synchronous motor with its drive electronics, encoder, and optionally a gearbox into a single compact unit. This approach simplifies system integration in robotic applications by reducing external components and wiring complexity. Common use cases include robot joints, exoskeletons, and mobile platforms where high power density and precise position control are essential.
Other hardware parts related to Xiaomi Self-Developed Humanoid Joint Motor (CyberOne)
A family of joint motors developed in-house by Xiaomi specifically for the CyberOne humanoid prototype unveiled on August 11, 2022. Xiaomi publicly disclosed one concrete spec: a peak torque of 300 Nm for the strongest motor (knee joint). CyberOne’s body uses 21 real-time-controlled joint degrees of freedom in total. Xiaomi has not released separate part numbers or full per-variant specifications — these motors exist publicly only as a Xiaomi-branded component family for CyberOne.
