Essays about: "instabilitet"

Showing result 21 - 25 of 82 essays containing the word instabilitet.

  1. 21. Learning to Fly: Upgraded Aerodynamics and Control Surfaces

    University essay from KTH/Flygdynamik

    Author : David Jacobsson; [2021]
    Keywords : Hybrid; UAV; Reinforcement Learning; Machine Learning; Controller; Flight Controller; Control Theory; Learning to Fly; Aerodynamics; Hybrid; UAV; Drönare; Flygmekanik; Reglerteknik; Maskininlärning; Regulatordesign;

    Abstract : In recent times the unmanned quadcopter aircraft has been used for a widening range of applications, but for longer distances it still falls short of conventional airplanes in terms of energy usage. There exists hybrid configurations of unmanned aircraft which combine the mobility of quadcopters and the range of fixed-wing aircraft. READ MORE

  3. 22. Čerenkov emission of whistler waves by electron holes

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Nedjma Ouahioune; [2021]
    Keywords : Čerenkov; Whistler waves; Resonance; Electron holes; Plasma; Physics; Space Physics; Astronomy; Plasma waves; Instabilities; Čerenkov; visslarvågor; elektromagnetiska vågor; resonans; electron holes; plasma fysisk; rymdfysisk; astronomi; plasma vågor; instabilitet;

    Abstract : Electron holes are positively charged nonlinear structures in which trapped electrons are supported by a positive electrostatic potential. These structure are regularly observed in space and laboratory plasmas by means of diverging bipolar electric field signatures. READ MORE

  4. 23. Instability of tie rod trusses of glulam

    University essay from KTH/Bro- och stålbyggnad

    Author : Adam Wisam Kafaji; [2021]
    Keywords : Tie rod truss; instability; hall building; glulam; Underspänd takstol; instabilitet; hallbyggnad; limträ;

    Abstract : Many buildings today primarily serve the purpose of being envelopes that separate theindoor climate from the outdoors, for a large open area. Examples of these buildings arehall buildings of different sorts. READ MORE

  5. 24. Optimization of a charging system for electric vehicles : A case study in Magangué, Colombia

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Malin Lönnqvist; [2020]
    Keywords : Electric vehicles; electric boats; EV charging infrastructure design; charging strategy; optimization; mixed integer linear programming; Colombia; Elfordon; elbåtar; design av laddningsinfrastruktur; laddningsstrategi; optimering; linjär programmering; Colombia;

    Abstract : To reduce the emissions from the transport sector, the electric vehicle (EV) is a promising alternative to the internal combustion engine vehicle (ICEV). An important aspect of implementing new transport systems in terms of EVs is the charging strategy, as many energy sources with different limitations can be utilized. READ MORE

  6. 25. Systems of linear nonautonomous differential equations - Instability and eigenvalues with negative real part

    University essay from Lunds universitet/Matematik LTH; Lunds universitet/Matematik (naturvetenskapliga fakulteten)

    Author : Jenny Riesbeck; [2020]
    Keywords : Mathematics and Statistics;

    Abstract : For an autonomous system of linear differential equations we are able to determine stability and instability with classical criteria, by looking at the eigenvalues. If the system is stable, all the eigenvalues have negative real part and if the system is unstable, there exist at least one eigenvalue with positive real part. READ MORE