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Visar resultat 1 - 5 av 8 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Prediktivt underhåll av transformatorstationer genom automatisk analys av störningsdata i COMTRADE-filer

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Simon Bidros; Ström Gustav; [2023]
    Nyckelord :COMTRADE; predictive maintenance; wavelet transform; substation; relay protection; COMTRADE; prediktivt underhåll; wavelettransform; transformatorstation; reläskydd;

    Sammanfattning : Arbetet beskriver möjligheten att kunna utföra prediktivt underhåll med hjälp av information frånCOMTRADE störningsfiler. En mjukvarualgoritm som hämtar tidsförlopp för händelser som uppstårvid störningar och kan ge indikationer på ifall reläer eller strömbrytare faller utanför optimalaarbetsförhållanden har utvecklats. LÄS MER

  3. 2. Cryptocurrency Spillover Effect on Non-Fungible Token Pricing

    Kandidat-uppsats,

    Författare :Josefine Matshede; Niklas Leschiner; [2022-08-18]
    Nyckelord :NFT; Cryptocurrency; Bitcoin; Ether; Spillover Index; Wavelet; GARCH;

    Sammanfattning : The thesis is designated to understand if the pricing of Non-Fungible Tokens (NFTs) is affected by the volatility present in the cryptocurrency market. NFTs are digital assets such as art, music, videos, and virtual property, that are encoded with blockchain-traded rights and have in the recent one a half year seen a large increase in prices and popularity amongst investors. LÄS MER

  4. 3. Door closing sound quality related to door sealing stiffness

    Master-uppsats, KTH/Marcus Wallenberg Laboratoriet MWL

    Författare :Riccardo Derton; [2021]
    Nyckelord :Door Closing Sound Quality; Customer’s Perspective; Psychoacoustics; Acoustic Analysis; Wavelet Analysis; Artificial Head; Door Closing Motion; Door Seals; Door Sealing Stiffness; Stiffness Analysis; Ljudkvalitet vid dörrstängning; Kundperspektiv; Psykoakustik; Akustisk analys; Wavelet analys; Konstgjort huvud; Dörrstängningsrörelse; Dörrtätningar; Styvhet i dörrtätningar; Styvhetsanalys;

    Sammanfattning : The door closing action is a recurrent situation when using a vehicle, and its sound is therefore a common sensation, which would elicit pleasant feelings. Sensory pleasantness is an important aspect in terms of customer’s perspective, and it can be a contributing factor when deciding to buy or not a specific vehicle. LÄS MER

  5. 4. Automatic post-fault analysis based on disturbance data stored in substation devices : Approach towards the preventive maintenance

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Riad Yalda; Miroslav Urosevic; [2019]
    Nyckelord :COMTRADE file; preventive maintenance; relay protection; automatic post-fault analysis; IEC 61850; wavelet transform.; COMTRADE filer; förebyggande underhåll; reläskydd; automatisk efterfelsanalys; IEC 61850; wavelettransform.;

    Sammanfattning : This report studies the possibilities of minimizing unplanned maintenance work and improving the availability of power supply by enabling preventive maintenance in power systems, without having to make additional investments in the existing systems. This was done using information from COMTRADE files (disturbance recording files) that are created in the event of a fault in the power system. LÄS MER

  7. 5. Development of Equine Gait Recognition Algorithm

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Mikael Maga; Sigrid Björnsdotter; [2017]
    Nyckelord :Activity Recognition - Gait Analysis - Horse Back Riding - Accelerometer - Gyroscope; Technology and Engineering;

    Sammanfattning : Horseback riding is a sport enjoyed by people around the world. Many riders are interested in knowing exactly how much they have exercised their horse and how much time that have been spent in different gaits. The goal of this master's thesis was to develop an equine gait recognition algorithm. LÄS MER