Servo Systems 伺服系统
Servo motors, drives and encoders — the closed-loop muscle-and-nerve system that gives robots precise, repeatable motion.
A servo system is the closed loop that makes a robot move exactly as commanded: a motor for force, a drive to modulate current, and an encoder to measure position thousands of times a second so the controller can correct error in real time. Bandwidth, torque density and encoder resolution set the ceiling on how fast and how precisely a robot can work.
Industrial arms have used servos for decades, but humanoids are rewriting the requirements — they need compact, high-torque frameless motors and integrated joint modules that fuse motor, reducer, encoder and drive into one unit. That shift is pulling servo and reducer suppliers closer together and creating a new tier of "actuator module" vendors.
What to watch
- Frameless and direct-drive motors for humanoid joints
- Integrated joint modules collapsing the component stack
- Encoder resolution and price as a humanoid bottleneck
Key Players
Representative companies operating in this part of the value chain.
Servo drives, AC motors and Motoman industrial robots — one of Japan’s "big four".
Visit website →China’s leading servo, drive and industrial-automation supplier.
Visit website →Precision encoders, resolvers and motion components for servo systems.
Vertically integrated servo, control and industrial-robot maker.
Visit website →