Sökning: "VRIDMOMENT"

Visar resultat 1 - 5 av 122 uppsatser innehållade ordet VRIDMOMENT.

  1. 1. A personalized quasi-passive ankleexoskeleton using human-in-the loop optimization approaches

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Ho Ming Kong; [2023]
    Nyckelord :;

    Sammanfattning : Passive ankle exoskeletons have been proven to successfully decrease muscle demand for walking. The movement of the user’s ankle drives a mechanical clutch and spring, which eventually stores and returns mechanical energy to the user. LÄS MER

  3. 2. Bilateral symmetri i isokinetisk lårmuskelstyrka hos fysiskt träningsaktiva individer

    Kandidat-uppsats, Linköpings universitet/Institutionen för hälsa, medicin och vård

    Författare :Oskar Edvardsson; Jonatan Stenqvist; Fredrik Karlsson; [2023]
    Nyckelord :Vridmoment; muskelstyrka; icke-skadad; symmetri.;

    Sammanfattning : Bakgrund: Muskelstyrkan påverkas av flertalet faktorer, exempelvis rörelsehastighet och träningsform. Detta kan leda till en asymmetri med olika styrka i höger och vänster sida som kan resultera i skador. Få studier har gjorts på deltagare utan tidigare skador. LÄS MER

  4. 3. Pulse-width voltage modulation in the Python-based open-source simulator Motulator : A Realization of SVPWM, Harmonic analyzer and Over-modulation on Two and Three-level Inverters, and a Solution for Unbalanced Neutral Point Voltage on Three-level Inverters

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Jiale Deng; [2023]
    Nyckelord :Three-level inverters; over-modulation techniques; space vector modulation; neutral-point voltage balancing; non-uniform Fourier transform; Trenivåväxelriktare; övermodulation; spacevektormodulering; balansering av nollpunktsspänning; olikformig Fouriertransform;

    Sammanfattning : Controlling the dynamic outputs of electrical machines has always been an essential topic in aerospace, automotive and other industries. Electrical machine control consists of several components, each of which can be controlled in various ways. Whereas the dynamic responses are mostly simulated using MATLAB/SIMULINK, Prof. LÄS MER

  5. 4. Simulations of a self-stabilizing fully submerged hydrofoil

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Henry Jacobson; [2023]
    Nyckelord :Hydrofoil; Self-Stabilizing; Lifting Line Theory; Fluid Mechanics; Numerical Methods; Backward Differentiation Formula; Fully Submerged Hydrofoil; Bärplan; bärplansbåt; självstabiliserande; lyftande linjeteori; strömningsme- kanik; numeriska metoder; Backward Differentiation Formula; fullt nedsänkt bärplan;

    Sammanfattning : Two models of a self-stabilizing hydrofoil system is developed where the effects from the struts and hydrofoil give torques for angular rotations. Lifting line theory for the hydrofoil which can twist is used. Nonlinear versions of the models are also developed and compared to find that the linear models use valid approximations. LÄS MER

  7. 5. Gear Modifications for Optimal Load Distribution

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Raghunath Adimoolam Ganesan; [2023]
    Nyckelord :Lead correction; Profile correction; Even load distribution; Thermal distortion.; helixkorrigering; profilkorrigering; jämn belastningsfördelning; termisk distorsion.;

    Sammanfattning : In the early days of gear manufacturing, engineers aimed to produce teeth as close to the theoretical shape as possible. As machinery advanced and demand for high-speed, high-torque, and quieter transmissions grew, optimizing gear teeth became increasingly important [1]. LÄS MER