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Unmanned Aerial Vehicle (UAV) navigation requires Machine Vision Systems to determine physical values of near distanced objects. These machine vision systems must respond in sufficiently amount of time using less scanning data from the observed objects. A novel Technical Vision System (TVS), which uses DC motors and laser triangulation to determine spatial coordinates of these objects, is offered...
A new Technical Vision System for target detection using a Laser Scanner and the Dynamic Triangulation measurement method was developed at the engineering institute of UABC, which presents a single-sensor, high-speed and low-cost laser scanning system, to determine 3D spatial coordinates of any object under observation. Previous research has shown the existence of serious disadvantages, when using...
This paper deals with the inclusion of frequency effects (skin effect) in an enhanced transport delay model for electric cables of arbitrary length connected to a PWM-IGBT variable frequency drive (VFD), to better predict overvoltage peaks in the line during transient.The problem and the importance of predicting peak overvoltages to determine the appropriate insulation to be used by cables is addressed...
This paper presents a power inverter tailored for low-power photovoltaic (PV) systems. The inverter features high reliability, thanks to a circuit topology that obviates aluminum electrolytic capacitors from the circuit. Moreover, all components, including logic and control, have been designed to exhibit high reliability at high temperatures. Three conversion stages form the power topology. First,...
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