Browsing by Author "Raquib, Ahmed"

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    Design of an аutomatic сontroller for sustainable grid power supply in Bangladesh
    (Видавництво Львівської політехніки, 2011) Raied, Hasan; Raquib, Ahmed
    This paper presents a proposed model of an automated controlling unit for distributing electricity generated from solar panels and windmills (hybrid connection) simultaneously to a small locality through a smart grid connection. The power sources will simultaneously provide electricity and will also store energy in a suitable storage medium (batteries). A central controller will distribute the collected power to the locality or store it as needed. The proposed model is suitable for tropical regions since both solar and wind energies are incorporated into the system. Since the geographical local of Bangladesh favors harvesting both these renewable sources of energy, this system can be ideal for places where electricity is still unknown.
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    Designing the feedback system for a DC motor to control its angular movement and speed using microcontroller
    (Видавництво Львівської політехніки, 2011) Raquib, Ahmed; Brian, D’ Rozario
    In today’s world, technology is evolving fast and with expensive and complicated equipments we are able to achieve greater accuracy. This paper presents a simplified and an inexpensive model for replacing more complicated feedback systems like optical encoder using a laser unit, a Light Dependent Resistor (LDR) and a microcontroller in an environment where very high accuracy is not required. Usually it is very difficult to control the speed of a DC motor since it varies with the supplied voltage, but this feedback system can be used to control the movement angle and speed of a DCmotor.