Essays about: "kurvanpassning"

Showing result 1 - 5 of 7 essays containing the word kurvanpassning.

  1. 1. Development and Assessment of Re-Fleet Assignment Model under Environmental Considerations

    University essay from KTH/Optimeringslära och systemteori

    Author : Prashant Prashant; [2020]
    Keywords : Aviation; Fleet Assignment; Greenhouse Gases; Linear Optimization; Resource Management; Applied Mathematics; Mathematical Modelling; Flygindustrin; Tillämpad Matematik; Linjär Optimering; Fleet Assignment; matematisk modellering;

    Abstract : The imminent threat of global catastrophe due to climate change gets more real by each passing year. The Aviation trade association, IATA, claims that Aviation accounts for approximately 2% of the Greenhouse Gases (GHG) caused by human activities, and 3.5% of the total Radiative Forcing. READ MORE

  3. 2. Model parameter estimation for a handheld nutrunner

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Jonathan Fridstrand; Johanna Sturk; [2020]
    Keywords : ;

    Abstract : The purpose of this project is to investigate the angled nutrunner, which is a hand held torque tool often used in the industry to tighten bolted joints. The goal is to estimate parameter values for an existing model that can describe the reaction force and the angular displacement of the tool as a function of the torque transferred to the joint. READ MORE

  4. 3. Non-linear Curve Fitting

    University essay from Mälardalens högskola/Akademin för utbildning, kultur och kommunikation

    Author : Farhad Morad; [2019]
    Keywords : Curve Fitting; Power-exponential function; Gauss-Newton algorithm; Levenberg-Marquardt algorithm; Linear and non-linear curve fitting; Kurvanpassning; Potens-exponential funktion; Gauss-Newton-algoritm; Levenberg-Marquardt-algoritm; Linjär och ickelinjär kurvanpassning;

    Abstract : The work done in this thesis is to examine various methods for curve fitting. Linear least squares and non-linear least squares will be described and compared, and the Newton method, Gauss--Newton method and Levenberg--Marquardt method will be applied to example problems. .. READ MORE

  5. 4. Study of Analytical Models for Harmonic Losses Calculations in Traction Induction Motors

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Anaïs Maroteaux; [2016]
    Keywords : Analytical model; Bertotti; curve fitting; FEM 2D; harmonic losses; induction mo-tor; iron losses; Joule losses; skin and proximity effects.; Analytisk modell; Bertotti; kurvanpassning; FEM 2D; harmoniska förluster; asynkro-nmotor; järnförluster; Joule förluster; skineffekt och proximity effekt.;

    Abstract : This Master Thesis deals with the study of analytical and finite-element (FE) models for calculation of losses in traction induction motors. Motors are fed through inverters for this type of application. Therefore, both fundamental and harmonic losses are considered. The study is done with one particular motor and one initial analytical model. READ MORE

  6. 5. Testing the Heat Transfer of a Drain Water Heat Recovery Heat Exchanger

    University essay from KTH/Energiteknik

    Author : Emma Grundén; Max Grischek; [2016]
    Keywords : ;

    Abstract : This study investigates the change in thermal resistance due to fouling in drain water pipes. As insulation of houses and energy efficiency of appliances improve, the importance of Drain Water Heat Recovery (DWHR) is growing steadily. READ MORE