Search for dissertations about: "noise reduction"

Showing result 1 - 5 of 224 swedish dissertations containing the words noise reduction.

  1. 1. On Fluid Power Pump and Motor Design Tools for Noise Reduction

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Liselott Ericson; Linköpings universitet.; Linköpings universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Noise and vibration are two of the main drawbacks with fluid power  systems. The increasing requirements concerning working environment as well as machines' impact on surroundings put components and systems to harder tests. The surrounding machines, e.g. READ MORE

  2. 2. Study of Supersonic Jet Noise Reduction using LES

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Haukur Hafsteinsson; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; G3D; Supersonic Jet; PIV; CD-nozzle; CFD; Compressible flow; CAA; Noise Reduction; LES; Flow Control;

    Abstract : Increases in air traffic and denser population around airports have led to stricterregulations on aircraft noise. High noise levels from high-speed aircraft can causehearing damage in pilots and the airfield personnel. The engine is the main sourceof noise of all jet aircraft and is therefore a key component for improvement. READ MORE

  3. 3. Reduction of Substrate Noise in Mixed-Signal Circuits

    University dissertation from Institutionen för systemteknik

    Author : Erik Backenius; Mark Vesterbacka; Kejll O. Jeppson; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mixed-signal; Substrate noise; Substrate modeling; Simultaneous switching noise; SSN; Digital; Analog; Clock; TECHNOLOGY Electrical engineering; electronics and photonics Electronics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektronik;

    Abstract : In many consumer products, e.g., cellular phones and handheld computers, both digital and analog circuits are required. Nowadays, it is possible to implement a large subsystem or even a complete system, that earlier required several chips, on a single chip. READ MORE

  4. 4. Noise reduction of hydraulic systems : design considerations and methods

    University dissertation from Linköping : Linköpings universitet

    Author : Andreas Johansson; Linköpings universitet.; Linköpings universitet.; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : AS A CONSEQUENCE OF increased requirements concerning pleasant working conditions, the system designer of today is facing challenges besides the traditional performance related ones. Subjects such as cleanliness, low sound and vibration levels etc. play important roles in modern system development. READ MORE

  5. 5. On Reduction of Substrate Noise in Mixed-Signal Circuits

    University dissertation from Institutionen för systemteknik

    Author : Erik Backenius; Linköpings universitet.; Linköpings universitet.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mixed-signal; substrate noise; substrate modeling; simultaneous switching noise; SSN; digital; analog; clock; TECHNOLOGY Electrical engineering; electronics and photonics Electronics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektronik;

    Abstract : Microelectronics is heading towards larger and larger systems implemented on a single chip. In wireless communication equipment, e.g., cellular phones, handheld computers etc. READ MORE