Search for dissertations about: "noise"

Showing result 1 - 5 of 1568 swedish dissertations containing the word noise.

  1. 1. A study of oscillator phase noise

    University dissertation from Chalmers University of Technology

    Author : Mikko Sironen; Chalmers tekniska högskola.; Chalmers University of Technology.; [1996]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; linear noise; low frequency noise; nonlinear noise; oscillator noise; phase noise; oscillator noise reducion; mm-wave oscillator;

    Abstract : .... READ MORE

  2. 2. Gearbox noise Correlation with transmission error and influence of bearing preload

    University dissertation from Stockholm : KTH

    Author : Mats Åkerblom; KTH.; [2008]
    Keywords : gear; gearbox; noise; vibration; transmission error; bearing preload; TECHNOLOGY Other technology Mechanical engineering; TEKNIKVETENSKAP Övriga teknikvetenskaper Maskinteknik;

    Abstract : The five appended papers all deal with gearbox noise and vibration. The first paper presents a review of previously published literature on gearbox noise and vibration.The second paper describes a test rig that was specially designed and built for noise testing of gears. READ MORE

  3. 3. Low phase noise voltage controlled micro- and millimeter wave oscillators

    University dissertation from Chalmers University of Technology

    Author : Stefan Andersson; Chalmers tekniska högskola.; Chalmers University of Technology.; [1998]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase noise; FM noise; PM noise; noise; microwave; millimetre wave; mm-wave; radio; RF; oscillator; VCO; 1 f noise; oscillation criteria; resonator; delay line; stabilised; quarts crystal; phase error; microstrip resonator; cavity resonator; dielectric resonator; DR; DRO; surface acoustic wave; SAW; sapphire resonator; whispering gallery mode; YIG sphere; YIG film; fibre optic; Fabry-Perot resonator; device; silicon bipolar transistor; Si BJT; gunn diode; MESFET; HEMT; HFET; PHEMT; HBT; amplitude limiter; automatic gain control; AGC; clipping diode; varactor; anti series; piezo electric; magnetostrictive; terfenol; multiplier; phase locked loop; PLL; frequency discriminator; balanced oscillator; transposed gain; laser;

    Abstract : .... READ MORE

  4. 4. Human response to wind turbine noise perception, annoyance and moderating factors

    University dissertation from Göteborg : Occupational and Environmental Medicine, Department of Public Health and Community Medicine, Institute of Medicine, The Sahlgrenska Academy, Göteborg University

    Author : Eja Pedersen; Högskolan i Halmstad.; Göteborgs universitet.; Gothenburg University.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURAL SCIENCES; NATURVETENSKAP; Noise; Environmental exposure; Wind; Audio-visual interaction; Low-level noise exposure; wind turbines; noise annoyance; sound perception; audio-visual interaction; low-level noise exposure;

    Abstract : Aims: The aims of this thesis were to describe and gain an understanding of how people who live in the vicinity of wind turbines are affected by wind turbine noise, and how individual, situational and visual factors, as well as sound properties, moderate the response.Methods: A cross-sectional study was carried out in a flat, mainly rural area in Sweden, with the objective to estimate the prevalence of noise annoyance and to examine the dose-response relationship between A-weighted sound pressure levels (SPLs) and perception of and annoyance with wind turbine noise. READ MORE

  5. 5. Development and Application of Reactor Noise Diagnostics

    University dissertation from Chalmers University of Technology

    Author : Joakim K.-H. Karlsson; Chalmers tekniska högskola.; Chalmers University of Technology.; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics; reactor noise; noise diagnostics; control rod vibrations; BWR stability; noise decomposition; density wave oscillations; channel instability; localisation; PWR noise; core barrel vibration;

    Abstract : A number of problems in reactor noise diagnostics have been investigated within the framework of the present thesis. The six papers presented cover three relatively different areas, namely the use of analytical calculations of the neutron noise in simple reactor models, some aspects of boiling water reactor (BWR) stability and diagnostics of core barrel motion in pressurized water reactors (PWRs). READ MORE