The Coupling Vibration Mechanism of Bearing Installation Misalignment and Rub-Impact in Supercritical Shaft Systems

Physics, Mechanics, Engineering, Mechanical Engineering, Aerospace Engineering,
supercritical shaft system   bearing installation misalignment   rub-impact   coupling vibration   dynamic model  

Academic Background With the increasing demand for high-speed and lightweight design in the aviation industry, more and more aviation transmission shaft systems have adopted supercritical design. Supercritical design means that the drive shaft must cross its first critical speed, but when crossing the critical speed, the shaft system will produce s...

Nonlinear Vibration Analysis of Delaminated Composite Plate Structures in Supersonic Flow

Physics, Mechanics, Engineering, Mechanical Engineering, Aerospace Engineering, Materials Science,
nonlinear vibration   delaminated composite   supersonic flow   finite element analysis   aeroelasticity  

Background Introduction In aerospace engineering, thin laminated composite structures (such as wings) are prone to vibration under high-speed airflow, which may lead to instability phenomena such as flutter or divergence, affecting the safety and performance of aircraft. Particularly, when delamination (i.e., adhesive failure between layers) exists...

Finite-Time Adaptive Robust Trajectory Tracking Control for Dual-Arm Space Robot

Engineering, Mechanical Engineering, Aerospace Engineering, Information Science, Automation,
space robot   finite-time control   adaptive control   friction nonlinearity   external disturbance  

Research on Finite-Time Adaptive Robust Trajectory Tracking Control for Dual-Arm Space Robots Research Background and Problem With the rapid development of space technology, space robots are playing an increasingly important role in on-orbit servicing, satellite assembly, spacecraft refueling, and other tasks. However, space robot systems face nume...

Resource-Efficient Decentralized Sequential Planner for Spatiotemporal Wildfire Mitigation

Engineering, Aerospace Engineering, Information Science, Computer Science, Artificial Intelligence,
UAV   wildfire mitigation   decentralized planning   spatiotemporal tasks   resource optimization  

Efficient Decentralized Sequential Planner for Spatiotemporal Wildfire Mitigation Using Multiple UAVs Academic Background Wildfires pose a significant threat to global biodiversity and resource sustainability, especially in their early stages. If not controlled in time, wildfires can rapidly expand, leading to severe ecological damage. In recent ye...

NPE-DRL: Enhancing Perception-Constrained Obstacle Avoidance with Nonexpert Policy-Guided Reinforcement Learning

Engineering, Aerospace Engineering, Information Science, Computer Science, Artificial Intelligence,
UAVs   Obstacle avoidance   Deep reinforcement learning   Nonexpert policy   Perception-constrained   Sample efficiency   Monocular vision  

Research on Improving UAV Obstacle Avoidance in Vision-Constrained Environments Based on Nonexpert Policy Reinforcement Learning In recent years, unmanned aerial vehicles (UAVs) have gained widespread application in civilian fields such as package delivery, risk assessment, and emergency rescue, owing to their superior maneuverability and versatili...

Satellite-Assisted 6G Wide-Area Edge Intelligence: Dynamics-Aware Task Offloading and Resource Allocation for Remote IoT Services

Satellite-Assisted 6G Wide-Area Edge Intelligence: Dynamics-Aware Task Offloading and Resource Allocation for Remote IoT Services

Engineering, Aerospace Engineering, Information Science, Electronic Information, Computer Science, Artificial Intelligence,
satellite communication   6G networks   task offloading   resource allocation   deep reinforcement learning   edge computing   spatio-temporal dynamics  

Satellite-Assisted 6G Wide-Area Edge Intelligence: Dynamics-Aware Task Offloading and Resource Allocation for Remote IoT Services Background Introduction With the advent of the 6G mobile communication network, the traditional Internet of Things (IoT) architecture is gradually transforming into the new paradigm of the intelligent Internet of Everyth...

From Behavior to Natural Language: Generative Approach for UAV Intent Recognition

Engineering, Aerospace Engineering, Information Science, Computer Science, Artificial Intelligence,
UAV   intent recognition   generative model   cross-modal   time series   deep learning   confrontation environment  

UAV Behavior Intent Recognition Based on Generative Models: A Cross-Modal Study From Behavior to Natural Language Background and Research Objectives In recent years, Unmanned Aerial Vehicle (UAV) technology has advanced rapidly and has found widespread applications in civilian and military domains, including search and rescue, precision agriculture...

Enhancing Aerial Object Detection with Selective Frequency Interaction Network

Engineering, Aerospace Engineering, Information Science, Computer Science, Artificial Intelligence,
aerial object detection   frequency-domain features   selective frequency interaction   convolutional neural networks   feature extraction   deep learning   computer vision  

Selective Frequency Interaction Network for Improved Aerial Object Detection Background and Problem Statement With the advancements in computer vision, aerial object detection has become a critical research focus in remote sensing. This task aims to identify targets such as vehicles or buildings from aerial images captured at varying angles and alt...