Kinematic and Dynamic Analysis of a Deployable Structure for Space Antenna

To ensure space antennas a reliable deployment on orbit, the analysis of those deployable structures must be paid sufficient attention before launch. This paper aims at a modular and deployable support truss structure for planar space antenna. The general model of deployment kinematic analysis is established to obtain the angle, the angular velocity and the angular acceleration of any link on the structure. The model is also used to analysis the singularity position. On the basis of kinematic analysis of the deployable structure, the dynamic model for the deployable structure is established based on the Lagrange method, which is calculated by MATLAB programming to carry out the driving torque under the corresponding control strategy. The dynamic simulation model is established using ADAMS and the simulation result prove that the dynamic model based on the Lagrange method is correct.