Abstract: Large phased array antennas often have large weight and the stiffeners attached to planes have discrete location restriction, so that it is difficult to meet the demand of high plane accuracy. A homology design of large phased array antennas is presented to tackle this problem. A new synthetic optimization model is proposed to design the locations of actuating links, which take both plate self-weight deformation and adjusting mechanism accuracy into consideration. For improving effectiveness and decreasing the computing cost of stiffener layout optimization, a continuous filter function is introduced to transfer the discrete optimization into continuous one. A large phased array antenna is simulated to verify the proposed method and satisfactory results are obtained.

Key words: adjusting mechanism, condition number, phased array antenna, stiffeners, topological optimization