关键词: 在轨组装, 分布式优化, 混合粒子群算法, 大型航天结构, 作动器

Abstract: The large space structure in the assembly process has the characteristics of discrete increment, and its configuration and parameters are constantly change. Different from space structure with fixed configuration, there is currently no in depth research on how to reasonably configure actuators to suppress structural vibration during on orbit assembly process. Hence, the optimal configuration of the actuators in the assembly stage of the large space structure is different from that in the on orbit operation stage. Aiming at the problem, a distributed optimal configuration method of large space structure actuators in the assembly process is proposed in this paper. Considering the characteristics of large space structure which are assembled by modular substructures, the design concept for the actuator distributed optimal configuration in the assembly stage of large space structure is first given. Secondly, the dynamic model of truss structure for actuator placement optimization in assembly process is developed, and the objective function for optimal configuration is developed. The hybrid particle swarm optimization algorithm is improved by combing with the beetle antennae search algorithm; Finally, a numerical example of the position optimization of the actuators of the space smart truss structure in the assembly process is given. The results show that the distributed optimal configuration of actuators in the assembly process of space truss structures is realized by the improved hybrid particle swarm optimization algorithm.

Key words: on orbit assembly, distributed optimal configuration, hybrid particle swarm optimization, large space structure, actuators