A six-degree-of-freedom (6-DOF) motion platform is a mechatronic device capable of precise motion in
six degrees of freedom (translation along the X/Y/Z axes and rotation around three axes). It is widely
used in high-end simulation training, precision testing, and industrial positioning. Its core features and
classification are as follows:
Basic Structure and Principle
Mechanical Construction
It consists of six electric/hydraulic cylinders, upper and lower platforms, and a universal hinge. The lower
platform is fixed, and the upper platform is driven by the coordinated extension and retraction of
actuators to achieve six-dimensional motion, capable of simulating complex posture changes.
Electric: Driven by a servo motor, it eliminates the need for a hydraulic system, preventing oil contamina
tion and simplifying maintenance.
Hydraulic: Controlled by an electro-hydraulic servo valve, the hydraulic cylinder delivers high thrust and
high-frequency response (customizable frequencies up to 100Hz).
Motion Control: Fully closed-loop control combined with mathematical models of spatial motion (such
as the Stewart platform principle) achieves millisecond-level dynamic response and submillimeter
positioning accuracy.
