Sökning: "noise modelling"

Visar resultat 21 - 25 av 103 uppsatser innehållade orden noise modelling.

  1. 21. Experimental acceleration Measurements and Finite Elements Modeling

    Magister-uppsats, Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Författare :Ibrahim Alnimairi; Salim Arrabi; [2021]
    Nyckelord :signal processing. PSD; mode shapes; Mdof; Sdof; PSDT-SVD; finite element modelling;

    Sammanfattning : Heavy crushing machines under their production shifts, creates various levels of vibration, noise and dynamic forces which can be transferred to other parts of the industrial unit. Such kind of factors applies continuous forces on machine parts which can cause gradual fatigue, creep and eventually failure of machine. LÄS MER

  3. 22. Online Secondary Path Modelling for Spatial Active Noise Control with Arbitrarily Spaced Arrays

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

    Författare :Jesper Brunnström; [2021]
    Nyckelord :Active noise control; Secondary path modelling; Spatial; Adaptive filter; Multichannel; Least mean squares; Aktiv brusreducering; Sekundärvägsmodellering; Spatial; Adaptiv Filtrering; Multikanal; Minsta kvadratmetoden;

    Sammanfattning : In this work we explore online secondary path modelling (SPM) in the context of spatial active noise control (ANC). Specifically, we are interested in the reduction of broadband noise over a three-dimensional region, without restrictions on microphone and loudspeaker array placement. LÄS MER

  4. 23. In vitro study of Biodegradation in Mg-alloys by Isothermal Calorimetry

    Master-uppsats, Lunds universitet/Industriell Produktion

    Författare :Prasad Rajendra Kekare; Akshat Kulkarni; [2021]
    Nyckelord :Isothermal Calorimetry; Degradation of Mg Alloys; Supersaturated solid solution SSSS ; Corrosion rate; Aqueous corrosion.; Technology and Engineering;

    Sammanfattning : Magnesium corrosion in an aqueous environment is a multi-layer, complex process. A literature survey shows significant gaps and the modelling work reported indicates a lack of clarity in understanding the corrosion process. LÄS MER

  5. 24. An Infrared Stellar Thermometer

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Ieva Puspure; [2021]
    Nyckelord :Infrared Spectroscopy; Infrared; Red giants; Stellar Temperature; Spectroscopy; Physics and Astronomy;

    Sammanfattning : Infrared (IR) spectroscopy has many advantages over optical, one of which is allowing us to see through intergalactic dust, letting us probe deeper into space and dust-dense regions such as galactic centers. However the investigating the IR spectral range is a relatively new field, owing to recent developments in detector technology, and stellar parameter determination in IR is not well researched. LÄS MER

  7. 25. Comparison of control strategies for manipulating a Hydrobatic Autonomous Underwater Vehicle

    Master-uppsats, KTH/Mekatronik

    Författare :Chariklia Panteli; [2021]
    Nyckelord :Autonomous Underwater Vehicle; AUV; Gripper; Manipulator; Controlcomparison; Linear Quadratic Regulator; LQR; PID; Model Predictive Controller; MPC; Autonomt undervattensfordon; AUV; Gripper; Manipulator; Kontrolljämförelse; Linjär kvadratisk regulator; LQR; PID; Modell Predictive Controller; MPC;

    Sammanfattning : This master thesis project is focused on the development of an LQR controller and its comparison with other controllers (PID and MPC), in order to successfully control an Autonomous Underwater Vehicle manipulation system. The modelling of the manipulator was performed first in Matlab and later on in Simulink-Simscape. LÄS MER