Control principle of six degree of freedom platform:

1. The six degree of freedom motion platform is driven by six servo motors to perform expansion and contraction movements of electric cylinders, and the six electric cylinders are connected in parallel to jointly drive the motion platform. Each electric cylinder of the sports platform can achieve independent telescopic movement in space.

2. Therefore, the control system can drive the upper platform to complete six degrees of freedom in space by controlling the expansion and contraction of the six electric cylinders, thereby achieving changes in the pose of the upper platform. The six degrees of freedom refer to the translational motion of the platform along the x, y, and z coordinate axes, as well as the rotational motion around the three coordinate axes.

3. Based on the motion state of the six degree of freedom platform, calculate the corresponding position and speed command signals of each electric cylinder, in order to control the action of the motion platform and ensure that it moves according to the predetermined trajectory; When the motion platform reaches the required position, the speed command signal of each electric cylinder is set to zero, and the motion platform immediately stops, achieving the purpose of point control.

4. During the motion, it is necessary to timely detect the speed and displacement signals of each electric servo cylinder. The speed signal is used as the input for tracking speed in closed-loop control, and the displacement signal is used for position feedback and monitoring, in order to achieve pose control of the motion platform.