Xiaomi CyberGear Micro-Actuator
CyberGear is Xiaomi's family of BLDC micro-actuators operating in a quasi-direct-drive configuration. Each module integrates a brushless motor with high torque density, a short planetary reducer, a power-stage driver with current loop and an absolute encoder inside a compact sealed housing.
The actuator drives the 12 leg joints (3 per leg) of the Xiaomi CyberDog 2 robot. A reported ~50% improvement in torque density and response time compared with the first-generation CyberDog enables dynamic manoeuvres — running, jumping and continuous backflips.
Classification
BLDC Motor · serves as: Joint Actuation, Locomotion Drive, Motion Generation, Closed-Loop Drive Control. · compatible with: Quadruped, Legged Robot.
Which group Xiaomi CyberGear Micro-Actuator belongs to and how it is built
A subcategory covering joint actuators — integrated drive units combining a motor, gearbox, encoder, and control electronics in a single module, used in the joints of robot limbs and torsos.
The BLDC (Brushless DC) motor is widely used in robotics due to its high efficiency, long service life, low mechanical wear, and the ability to precisely control speed and torque. BLDC motors are found in robot joints, grippers, dexterous hands, cooling fans, and mobile platforms. Combined with an appropriate controller and encoder, they form the foundation of modern electric drive systems.
Technical specification
Basic physical properties of Xiaomi CyberGear Micro-Actuator — dimensions, weight and materials
Relations
Robots in which Xiaomi CyberGear Micro-Actuator is or can be used
