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Elektrik Elektronik Projeleri
Design of Small Photovoltaic(PV) Solar-Powered Water Pump System (Güneş Paneli beslemeli su pompa sistem dizaynı)
The intent of this technical publication is to provide general guidance on the design of small solar-powered water pump systems for use with livestock operations or irrigation systems. This document provides a review of the basic elements of electricity, a description of the different components of solar-powered water pump systems, important planning considerations, and general guidance on designing a solar-powered water pump system.
Wireless Bomb Disposal Robot (Kablosuz bomba imha robotu)
The main goal of the project is to provide safety to the bomb disposal squad by providing an extra line of defence.
- Provide a remote monitoring and controlling application for analysis of a suspicious packet (or bomb).
- Allow the user to manipulate the packet using the robotic arm.
- To provide visual feedback from the site of the packet.
- To provide a very user-friendly control application.
Automatic Bucket Fill (Otomatik Kepçe Doldurma )
This report contains the first step towards a complete, fully autonomous, robust bucket fill regulator for a wheel loader working with gravel materials.
The bucket fill procedure is the most critical part of the work cycle of a wheel loader. It is a task that has a long learning curve and also is weary, even for experienced drivers. The automation of it could therefore have a big impact on the cost effectiveness for wheel loaders and for the comfort of the drivers.
In this report, a suggestion for the complete solution of an automatic bucket fill regulator is presented. A regulator prototype is also constructed with a Volvo L120F as the base. The scope for the prototype is limited to one type of gravel material and quite optimal conditions for the wheel loader, but the complete solution is kept in mind throughout the synthesis. The constructed regulator is prepared for expansion, but the implementation and field testing is limited to the scope.
DC Motor Speed Control Using Microcontroller PIC 16F877A (PIC 16F877 kullanarak DC motor hız kontrolü)
This project is mainly concerned on DC motor speed control system by using microcontroller PIC 16F877A. It is a closed-loop real time control system, where optical encoder (built in this project) is coupled to the motor shaft to provide the feedback speed signal to controller. Pulse Width Modulation (PWM) technique is used where its signal is generated in microcontroller. Microcontroller acts as proportional (P) controller with Kp =1 in this study. The PWM signal will send to motor driver to vary the voltage supply to motor to maintain at constant speed.
A program in Visual Basic 6.0 is developed to provide a graphic user interface (GUI) for the user to enter desired speed at computer. Besides, it also shows a graph of motor speed versus time to let the user monitor the performance of the system easily. Based on the result, the reading of optical encoder built is quite reliable. Through the project, it can be concluded that microcontroller PIC 16F877A can control motor speed at desired speed although there is a variation of load.
Design of PM Generator for Avertical Axis Wind Turbine (Avertial eksenli türbin için PM jeneratör tasarımı)
The task in this project is to design a generator for a vertical axis wind turbine with power rated to 20kW at a wind speed of 10m/s. The design has just a few moving parts, which decreases maintenance costs and increases its toughness. The turbine absorbs wind from every direction but its rotation speed ratio is lower than horizontal axis wind turbines.
It means that the generator must be bigger and therefore more expensive. Price is an important criterion for the generator. Neodymium magnets are expensive so the amount of this material must be limited. Several designs have been simulated but one final design has proven the most promising. It fulfills all specifications such as efficiency above 95%, 20kW output power and it also has a relatively low amount of hard magnetic material.A design with a single row of cables per slot was decided upon to eliminate heat pockets between cable rows, which can occur in designs with two cable rows per slot. It would be interesting to study designs with two or more cable rows per slot, as it could lead to a smaller and more efficient machine.
Source: Uppsala University
Author: Rynkiewicz, Mateusz