Sökning: "noise annoyance"

Visar resultat 21 - 25 av 36 avhandlingar innehållade orden noise annoyance.

1. 21. Health effects of road traffic noise in childhood and adolescence

   Författare :Alva Käte Enoksson Wallas; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Traffic noise is an increasing environmental exposure, primarily as a consequence of continuous urbanisation and growth of the transport sector. The burden of disease from noise is the second highest in Europe among all environmental exposures, after air pollution, and WHO recently proposed more strict environmental noise guidelines. LÄS MER

3. 22. Electric machine control for energy efficient electric drive systems

   Författare :Andreas Andersson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; permanent magnet synchronous machine PMSM ; noise assessment; Energy efficiency; modulation techniques;

   Sammanfattning : Pure electric vehicles and hybrid electric vehicles are of increasing interest in the automotive industry, much due to challenges such as emission level legislations and the environmental impact of the transportation sector. When continuously striving for better performing and more energy efficient electric powertrains, with high drivability and redundancy, there is an ever increasing need for further research and development in the areas of controls, design and system level optimization. LÄS MER

4. 23. Methods for motor noise evaluation and control in electric vehicles

   Författare :David Lennström; Ragnar Glav; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

   Sammanfattning : Complete vehicle, system and component target setting for noise, vibration and harshness (NVH) are important activities within automotive product development. New challenges arise when electric motors are introduced into cars traditionally powered by internal combustion engines (ICE). LÄS MER

5. 24. Electric Machine Control for Energy Efficient Electric Drive Systems

   Författare :Andreas Andersson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modulation techniques; permanent magnet synchronous machine PMSM ; Energy efficiency; inverter control.; noise assessment;

   Sammanfattning : Over the past decade, electric vehicles has increasingly become an area of attention for both academia and industry, much due to challenges such as emissions legislation and the environmental impact of the transportation sector. The absence of the broadband noise from the internal combustion engine brings new acoustic challenges for electric propulsion applications. LÄS MER

7. 25. Vibrations in Lightweight Buildings - Perception and Prediction

   Författare :Juan Negreira; Teknisk akustik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Psycho-vibratory evaluation; Vibrations; Timber floors; Lightweight; Measurements; Serviceability criteria; Vibration annoyance; Vibration acceptability; Elastomer; Finite element method; Prediction Tools.;

   Sammanfattning : When the Swedish construction code (in 1994) allowed wooden multi-storey buildings to be built, this type of lightweight construction became popular due to its low cost and ease of construction, and also because wood is a plentiful resource in Sweden. Drawbacks in such buildings are disturbing vibrations and noise propagating in the construction, especially through junctions. LÄS MER