Search for dissertations about: "hysteresis"

Showing result 1 - 5 of 105 swedish dissertations containing the word hysteresis.

  1. 1. Hydrogen in nano-sized metals Diffusion and hysteresis effects

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Wen Huang; Uppsala universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hydrogen; diffusion; hysteresis; optical technique; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : Metal hydrides can be used as hydrogen storage materials for fuel cells and batteries, and as sensors for detecting hydrogen gas. The use of metal hydrides for hydrogen storage can be hindered by poor kinetics and low capacity. Moreover, poor sensitivity, long recovery and response time, limit the applications of metal hydrides as hydrogen sensors. READ MORE

  2. 2. Hysteresis Modelling of High Temperature Superconductors

    University dissertation from Lausanne, Switzerland : Swiss Federal Institute of Technology Lausanne

    Author : Mårten Sjöström; Mittuniversitetet.; [2001]
    Keywords : nonlinear modelling; Preisach model; hysteresis; superconductor;

    Abstract : .... READ MORE

  3. 3. Estimation of torque in heavy duty vehicles with focus on sensor hysteresis

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Marcus Hedegärd; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hysteresis modelling; adaptive hysteresis compensation; hysteresis compensation; magnetoelastic torque sensor; Preisach model; generalized Prandtl-Ishlinskii model; cylinder pressure estimation; torque estimation;

    Abstract : For diagnosis and feedback control of vehicle powertrains, it is highly desired to monitor the torques at different locations online. The most obvious way to do this is to measure cylinder pressures, from which cylinder individual delivered torques can be calculated, or to use torque sensors. READ MORE

  4. 4. A lumped element transformer model including core losses and winding impedances

    University dissertation from Stockholm : KTH

    Author : David Ribbenfjärd; KTH.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power transformer; hysteresis; dynamic hysteresis; eddy currents; excess eddy currents; leakage flux; winding model; core model; magnetic measurements; magnetic materials; TECHNOLOGY Electrical engineering; electronics and photonics Electrical engineering; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektroteknik;

    Abstract : In order to design a power transformer it is important to understand its internal electromagnetic behaviour. That can be obtained by measurements on physical transformers, analytical expressions and computer simulations. READ MORE

  5. 5. Electromagnetic transformer modelling including the ferromagnetic core

    University dissertation from Stockholm : KTH

    Author : David Ribbenfjärd; KTH.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power transformer; hysteresis; dynamic hysteresis; dynamic magnetization; eddy currents; excess losses; leakage flux; winding model; core model; magnetic measurements; magnetic materials; TECHNOLOGY Electrical engineering; electronics and photonics Electric power engineering; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elkraftteknik;

    Abstract : In order to design a power transformer it is important to understand its internal electromagnetic behaviour. That can be obtained by measurements on physical transformers, analytical expressions and computer simulations. READ MORE