关键词: Twin-Bennett机构, 固面可展开天线, 优化设计, 伞状同步展开机构

Abstract: In order to solve the interference of Twin-Bennett (TB) linkage which controled the deploying processes of the solid surface deployable antennas and improve package capacities, the traditional sunflower-like segmentation scheme was improved. The optimization model between geometric parameters and the package ratio of the solid surface deployable antennas was established by exponential product formula. Then the package ratio was taken as objective function to optimize the segmentation scheme, with the optimal geometric parameters obtained by the sequential quadratic programming of multiple initial value points. Aiming at the synchronization of deployment, the umbrella synchronous deployment linkage was designed. The synchronous mechanisms might convert the linear movement into the deploying of the solid deployable antennas, and ensureed a single degree of freedom and synchronization. Finally, the software simulations and model tests were implemented to verify the deploying ability of the solid surface deployable antennas. It is indicated that the design may increase package capacities of the sunflower-like solid surface deployable antennas from 44% to 37%, and achieve the simplicity of the drive systems. The simulation results and the 3D prototype demonstrate the feasibility and rationality of this method.

Key words: Twin-Bennett(TB) linkage, solid surface deployable antenna, optimization design, umbrella synchronous deployment linkage