Sökning: "Vibration reduction"

Visar resultat 6 - 10 av 52 uppsatser innehållade orden Vibration reduction.

  1. 6. Vibration reduction over junctions in buildings

    Master-uppsats, KTH/Marcus Wallenberg Laboratoriet MWL

    Författare :Alexander Forsberg; Aras Wali; [2021]
    Nyckelord :Vibration reduction; Junction; Building acoustics; Vibrations minskning; Knutpunkt; Byggnadsakustik;

    Sammanfattning : Structure borne sound can travel multiple paths from one office to another and choosing to sound insulate a specific building element can be difficult since all the building elements are connected together and form a coupled system. The current approach by engineers when investigating transmission paths between spaces in a building is using a computer model and assuming that the junctions are firmly clamped or free. LÄS MER

  3. 7. The impact of noice pollution and vibrations on nearby buildings : How is the school Kulturama affected by noise and vibrations from the 'nya tunnelbana' project?

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Hadil Jawad; Aren Nabatyan; [2021]
    Nyckelord :Noice pollution; vibrations; metro; nya tunnelbana project; noice absorbents; Buller; vibrationer; stomljud; luftburet ljud; nya tunnelbana projekt; absorbenter;

    Sammanfattning : To meet the needs of the growing city of Stockholm, a large-scale project to expand the subway has been initiated. The tunneling involved in the project causes several disturbances, in terms of vibration and noise pollution, on the surroundings. This is problematic as vibration and noise pollution has been shown to have a negative health impact. LÄS MER

  4. 8. Predicting comfort in autonomous driving from vibration measurements using machine learning models

    Master-uppsats, KTH/Fordonsdynamik

    Författare :Kate Asarar; [2021]
    Nyckelord :Passenger comfort; Machine learning; Autonomous driving; Vibrationer; Passagerarkomfort; Maskininlärning; Vibrationer; Självkörande bilar;

    Sammanfattning : Highly automated driving is approaching reality at a high speed. BMW is planningto put its first autonomous driving vehicle on the road already by 2021. The path torealising this new technology is however, full of challenges. LÄS MER

  5. 9. Active stabilisation of a micro-sized fibre cavity using tilt locking to enable quantum operations on single ions

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Jannek Hansen; [2021]
    Nyckelord :Quantum computation; optical cavity; microcavity; locking; tilt locking; cavity stabilization; Gaussian-Hermitian modes; quantum computer; higher-order transverse modes; Physics and Astronomy;

    Sammanfattning : In this thesis, the tilt locking scheme is applied to create an error signal that monitors length changes in a fibre-based microcavity. To find a robust and precise locking technique is an essential step towards quantum operations on single rare-earth ions doped in microcrystals. Quantum computing and information is a frontier of modern physics. LÄS MER

  7. 10. Active Control of High­-Speed Flexible Rotors on Controllable Tilting­-Pad Journal Bearings : Theory and Experiment

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Paul-Henrik Bull; [2021]
    Nyckelord :ATPJB; Fluid-Film Lubrication; Model based control; Vibration Control;

    Sammanfattning : A common choice of bearing for industrial applications such as turbomachinery and rotating compressors is the Tilting-Pad Journal Bearing (TPJB) due to its excellent stability properties. TPJB's are however limited by the reduction of damping in the fluid film at high velocities. LÄS MER