Study on the Influence of Lightweight Mechanical Structure on UAV Dynamic Response Characteristics and Control Strategy Optimization

In this paper, the influence of lightweight mechanical structure on the dynamic response characteristics and control strategy optimization of UAVS is deeply studied. With the wide application and rapid development of UAV technology, lightweight design has become one of the key technologies to improve the performance of UAV. Through the use of high-strength lightweight materials, structural optimization and advanced manufacturing processes, the weight of the UAV has been significantly reduced, thereby improving its load ratio, range and maneuverability. However, lightweight design also brings challenges such as reduced structural stiffness and increased vibration, and these changes have a profound impact on the dynamic response characteristics of UAVs. In order to comprehensively analyze the mechanism of the influence of lightweight mechanical structure on the dynamic response characteristics of UAVs, this paper firstly summarizes the key factors of lightweight design from three aspects: material selection, structure optimization and manufacturing process, and discusses how these factors affect the natural frequency, damping ratio, vibration mode and other key dynamic parameters of UAVs. Then, through theoretical analysis, the specific reasons for the change of UAV dynamic response characteristics caused by lightweight design are revealed, including vibration intensification and stability reduction. In order to deal with these challenges, on the one hand, an active vibration control system should be introduced to effectively suppress the vibration of UAVs during flight and improve flight stability through real-time monitoring and feedback control. On the other hand, adaptive control algorithm is needed to dynamically adjust control parameters according to the real-time flight status and environmental changes of the UAV, so as to improve the adaptability and robustness of the control system. The research results of this paper not only provide theoretical basis and practical guidance for the lightweight design of UAVs, but also provide new ideas and methods for the future development of UAVS technology.