Yanwen Tian

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Piecewise systems arise in many kinds of practical control systems due to the existence of certain effects, such as dead-zone, saturation, relays and hysteresis. This paper deals with the problem of exponential stabilization for a class of piecewise continuous-time switched control systems with nonlinear uncertainties, which are equivalent to the general(More)
Eu(2+)-doped BaAl12O19 phosphors were prepared using the sol-gel method, and their structure and luminescence properties were characterized by X-ray diffraction (XRD) analysis and fluorescence spectrometry. The results showed that a single hexagonal BaAl12O19 crystal structure was synthesized and the emission spectrum of BaAl12O19:Eu exhibited a broad(More)
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