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Ag nanoparticles (Ag-NPs) were adsorbed onto the surface of phosphor NaYFPO4:Dy3+ through an in situ reduction. The structure, morphology, composition, and optical properties were confirmed by X-ray diffraction, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, and photoluminescence spectroscopy, respectively. The excitation peaks slightly shifted to long waves...
The interconnected power systems are strong coupling parameter uncertain nonlinear large systems, it is difficult to achieve stability tracking control for the systems. Conventional proportional-integral-derivative (PID) controller is designed to ensure desired performance under a particular operating condition. The controllers obtained from these approaches are simple but tend to lack robustness...
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