Design and Verification of Air-floating Suspension Gravity Compensation Device for Solar Wing

Aiming at the problem that the running resistance of the wheeled trolley suspension gravity compensation device is large and the air-floating support compensation device cannot meet the requirement of the mechanism deploy against the air-floating platform, a suspension gravity compensation device composed of the gantry-type support structure and the transverse and longitudinal two-way air-floating guides is proposed. The multi-segment splicing technology is used to solve the problem of production and adjustment of super long longitudinal guide rails; the method of adding throttle holes on both sides of the longitudinal guide joints is adopted to improve the running stability of the longitudinal air-floating trolley at the joints; The inverted "V" shaped working surface solves the problem of transverse rail running deflection caused by the external force not passing through the centroid; the combination of the extruded hollow aluminum profile and the carbon fiber reinforced beam realizes the weight reduction and bending stiffness increase of the large span transverse guide rail. After analysis and test verification, in case of hanging a 90 kg load at a single suspension point, the maximum running resistance coefficient of the device is not more than 0.037%, the operating range is up to 2 m×20 m. In case of a follow speed not more than 1 m/s and the acceleration is less than 0.3 m/s~2, the device has good dynamic following ability, which can meet the requirements of ground deployment test and performance test of large space deployable mechanisms such as solar arrays and antennas.