基于模态频率分隔的大型空间结构主被动混合振动抑制

To address the challenge of vibration suppression in individual assembly modules subjected to impact force disturbances during the on-orbit assembly process of large space structures，a hybrid active-passive collaborative vibration control strategy grounded in modal frequency separation is proposed. Initially，a dynamic model for the multi-module on-orbit assembly of large space structures is formulated，followed by an analysis of the low-order modal frequencies and inherent characteristics of the assembly process. Utilizing the first-order natural modal frequency separation approach，an optimal actuator allocation strategy is derived，and subsequently，a distributed active-passive vibration controller is devised. This controller is then integrated into the closed-loop vibration system for simulation-based evaluation. The simulation outcomes demonstrate that the proposed hybrid active-passive collaborative vibration control strategy yields superior vibration mitigation performance during the on-orbit assembly of large space structures when compared to conventional vibration control methodologies.