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In this paper, a visible light communications (VLC) system prototype using organic light emitting diode (OLED) with dimming support was realized and tested. Frequency response and driving range of OLED were measured and discussed. Considering practical applications of OLED, variable pulse position modulation (VPPM) signal was used to support data transmission under dimming condition. Our prototype...
The inverted pendulum is a unstable non-minimum-phase plant, Hinfin output feedback control of the system is far less robust. The difficulties of control of such a plant are analysed from the viewpoint of systempsilas bandwidth: the bandwidth for control of a non-minimum-phase plant must be narrow, and the control of an unstable plant need a rather wider bandwidth. It is pointed out that a fast feedback...
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