Four Degrees Of Freedom Motion Apparatus

摘要

The present invention relates to a four degrees of freedom motion apparatus, and more particularly, to a four degrees of freedom motion apparatus capable of implementing three degrees of freedom (pitch, roll, heave) motions by three actuators positioned at a lower plate and a center plate, and between the lower plate and the center plate, and a spline, and additionally implementing an one degree of freedom (sway) motion by a connecting means provided between the center plate and an upper plate.

主权项

1. A four degrees of freedom motion apparatus, comprising:
a lower plate contacting the ground; a center plate positioned while being spaced apart from the lower plate toward an upper side of the lower plate; three actuators positioned between the lower plate and the center plate, and configured to implement three degrees of freedom motions according to driving forms thereof; a spline positioned between the three actuators, and having a lower end bolt-fastened to the lower plate, and an upper end coupled to a lower portion of the center plate by a universal joint; an upper plate positioned while being spaced apart from the center plate toward an upper side of the center plate; and a connecting means configured to implement an additional one degree of freedom motion through a point-contact or surface-contact of the center plate and the upper plate.