Sökning: "frequency response functions."

Visar resultat 6 - 10 av 43 uppsatser innehållade orden frequency response functions..

  1. 6. Dynamic analyses of hollow core slabs : Experimental and numerical analyses of an existing floor

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Markus Hansell; Panagiotis Tamtakos; [2020]
    Nyckelord :Hollow core slab; Structural dynamics; Signal analysis; Mode shape; Frequency response function; Complex mode; FE-model; Håldäcksbjälklag; Strukturdynamik; Signalanalys; Modform; Frekvenssvar; Komplex mod; FE-modellering.;

    Sammanfattning : For intermediate floors in residential and office buildings, as well as in parking garages and malls, there is a wide use of hollow core concrete slabs in Sweden today. Hollow core slabs are precast and prestressed concrete elements with cylindrical-shaped voids extending along the length of the slab. LÄS MER

  3. 7. A Concept for an Intrusion Detection System over Automotive Ethernet

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Hanna Lindwall; Pontus Ovhagen; [2020]
    Nyckelord :Intrusion Detection System; Deep Packet Inspection; Specification-based Detection; Anomaly-based Detection; V2G; Automotive Ethernet.; Technology and Engineering;

    Sammanfattning : A modern automotive vehicle is a complex technical system, containing many electronic, mechanical, and software parts. Typically, a high-end vehicle contains 70 or more electronic control units (ECUs) on average. LÄS MER

  4. 8. Component-Based Transfer Path Analysis and Hybrid Substructuring at high frequencies : A treatise on error modelling in Transfer Path Analysis

    Master-uppsats, KTH/Maskinkonstruktion (Avd.)

    Författare :Harikrishnan Venugopal; [2020]
    Nyckelord :Dynamic Substructuring; Error modelling; Transfer Path Analysis; Uncertainty Propagation; Dynamisk substrukturering; Feluppskattning; Överföringsanalys; Osäkerhetspropagering;

    Sammanfattning : The field of modal testing and analysis is currently facing a surge of interest in error modelling. Several errors which occur during testing campaigns are modelled analytically or numerically and propagated to various system coupling and interface reduction routines effectively. LÄS MER

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

    Master-uppsats, KTH/Bro- och stålbyggnad

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

    Sammanfattning : 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. LÄS MER

  7. 10. Identifying Units on a WiFi Based on Their Physical Properties

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Jonatan Nyström; [2019]
    Nyckelord :Convolutional Neural Network; Supervised Learning; WiFi; Security; Activation Functions; Validation; WiFi; Datasets;

    Sammanfattning : This project aims to classify different units on a wireless network with the use of their frequency response. This is in purpose to increase security when communicating over WiFi. We use a convolution neural network for finding symmetries in the frequency responses recorded from two different units. LÄS MER