Essays about: "excitation"

Showing result 1 - 5 of 209 essays containing the word excitation.

  1. 1. Development of measurement algorithm in an industrial PLC : An evaluation of DSOGI-PLL for real time measurements

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Caroline Moberg; [2019]
    Keywords : Phase locked loop; DSOGI-PLL; Symmetrical component extraction; Measurement algorithm;

    Abstract : The aim of this project was to devise an algorithm for three phase AC power grid measurements that could be utilized in an excitation system for controlling generators. This application requires fast and accurate measurements even when the voltages in the power grid are characterized by unbalanced three-phase, frequency variations and harmonic distortions. READ MORE

  2. 2. Automatic Tuning of Motion Control System for an Autonomous Underwater Vehicle

    University essay from Linköpings universitet/Reglerteknik

    Author : Markus Andersson; [2019]
    Keywords : Automatic Control; Automatic Tuning; Control; Motion Control; Modelling; System Identification; Online Identification; Underwater Vehicle; Autonomous Underwater Vehicle; AUV; SMaRC; Maribot LoLo; Differential drive;

    Abstract : The interest for marine research and exploration has increased rapidly during the past decades and autonomous underwater vehicles (AUV) have been found useful in an increased amount of applications. The demand for versatile platform AUVs, able to perform a wide range of tasks, has become apparent. READ MORE

  3. 3. Optical studies of wrapgated InP nanowires

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Henrik Torstensson; [2019]
    Keywords : Nanowire; InP; ITO; wrapgate; photoluminescence; interface states.; Physics and Astronomy;

    Abstract : This thesis describes optical spectroscopy on III-V semiconductor InP nanowires (NW) with a transparent indium-tin-oxide (ITO) gate electrode. The NWs are arranged both as vertical arrays with a wrap all around gate and as single lateral NWs with an omega-shaped gate for increased electrostatic effect. READ MORE

  4. 4. Dynamic Soil-Structure Interactionof Soil-Steel Composite Bridges : A Frequency Domain Approach Using PML Elements and Model Updating

    University essay from KTH/Bro- och stålbyggnad

    Author : DIEGO FERNANDEZ BARRERO; [2019]
    Keywords : Dynamics; soil-steel bridges; soil-structure interaction; model updating; PML; particle swarm; corrugated steel plates; frequency domain assurance criteria; parallel computing 2;

    Abstract : This master thesis covers the dynamic soil structure interaction of soil-steel culverts applyinga methodology based on the frequency domain response. At the first stage of this masterthesis, field tests were performed on one bridge using controlled excitation. READ MORE

  5. 5. Design and construction of a contactless excitation and response measurement system

    University essay from KTH/Industriell produktion

    Author : Johan Westlund; [2019]
    Keywords : Rotor dynamic; Electromagnet; Contactless excitation; LabVIEW; Measurement instruments; Force control; CERS; Rotordynamik; Elektromagnet; Kontaktlös exitation; LabVIEW; Kraftkontroll; CERS;

    Abstract : Manufacturing industry works on Overall Equipment Effectiveness (OEE) to increase the yield and speed of machining. A good knowledge of the machine properties is important to increase the speed while still maintaining stable cutting with low tool usage. READ MORE