The paper proposes a methodology for reliable design and maintenance of wind turbine rotor blades using a condition monitoring approach and a damage tolerance index coupling the material and structure. By improving the understanding of material properties that control damage propagation it will be possible to combine damage tolerant structural design, monitoring systems, inspection techniques a...

Aimed at the deficiency of existing PID controller for quad rotor UAV, a single neuron with gravity compensation is presented. After using feed forward control to compensate gravity, position loop adopts ensure accuracy, while attitude increase adaptive ability. Then, by Matlab/simulink simulation software, UAV carried out, and result shows, compared traditional double closed controller, algori...

Abstract. Magnetic interference source identification is a critical preparation step for magnetometer-mounted unmanned aircraft systems (UAS) used high-sensitivity geomagnetic surveying. A magnetic field scanner was built mapping the low-frequency that produced by UAS. It to compare four types of electric-powered UAS capable carrying an alkali-vapour magnetometer: (1) single-motor fixed-wing, (...