Essays about: "Excitation systems"

Showing result 1 - 5 of 34 essays containing the words Excitation systems.

  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. Characterization of graphene-based sensors for forensic applications : Evaluating suitability of CVD graphene-based resistive sensor for detection of amphetamine

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Ülle-Linda Talts; [2019]
    Keywords : Sensor systems; Chemical sensors; Nanosensors; Drug screening; Nanomaterials; Sensorsystem; Kemiska sensorer; Nanosensorer; Drug screening; Nanomaterial;

    Abstract : Recent improvements in sensor technology and applications can be partly attributed to the advancements in microand nanoscale fabrication processes and discovery of novel materials. The emergence of reliable and inexpensive methods of production of monolayer materials, such as graphene, has revealed the advantageous electronic properties which when utilized in sensory elements can significantly enhance response to the input signal. READ MORE

  3. 3. 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

  4. 4. Monitoring Vehicle Suspension Elements Using Machine Learning Techniques

    University essay from KTH/Spårfordon

    Author : Henrik Karlsson; [2019]
    Keywords : Condition monitoring; condition based maintenance; FDI; diagnostics; machine learning; classification algorithms; dimensionality reduction; feature selection; feature transformation; frequency response functions.; Tillståndsövervakning; tillståndsbaserat underhåll; FDI; diagnostik; maskininlärning; klassificeringsalgoritmer; dimensionalitetsreducering; särdragsextrahering; särdragstransformering; frekvenssvarsfunktioner.;

    Abstract : Condition monitoring (CM) is widely used in industry, and there is a growing interest in applying CM on rail vehicle systems. Condition based maintenance has the possibility to increase system safety and availability while at the sametime reduce the total maintenance costs. READ MORE

  5. 5. Artificial Neural Networks to Solve Inverse Problems in Quantum Physics

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

    Author : Victor Lantz; [2019]
    Keywords : Artificial Neural Networks; ANN; Deep learning; Quantum physics; Inverse problem; Inverse; Machine learning; Density functional theory; DFT; Physics; Computational physics; Technology and Engineering;

    Abstract : Inverse problems are important in quantum physics as their solutions are essential in order to describe a number of systems using measurable information, e.g. excitation energies or material properties. The problem with inverse problems is that they are usually very hard to solve. READ MORE