Sökning: "commutation"

Visar resultat 1 - 5 av 31 uppsatser innehållade ordet commutation.

  1. 1. The Pseudo-Unitary Group U(p,q) in Quantum Magnonics

    L3-uppsats, Uppsala universitet/Materialteori

    Författare :Maximilian Meyer-Mölleringhof; [2024]
    Nyckelord :quantum magnonics; materials theory; pseudo-unitary; quantum mechanics; magnons; antiferromagnets;

    Sammanfattning : The study of magnons is an essential part of combining quantum information science and spintronics, allowing for the investigation of quantum properties such as entanglement in solid-state devices. Magnons are commonly described using the theory of T. Holstein and H. LÄS MER

  3. 2. Analys och minskning av effektförlusterna i en borstlös likströmsmotor med vektorstyrning

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Lider Xavier Garcia Parrales; [2023]
    Nyckelord :Effektförluster Borstlös likströmsmotor BLDC Vectorstyrning Field-oriented Control FOC Blockkommutering Block commutation MTPA; Technology and Engineering;

    Sammanfattning : This report addresses power losses in an electric motor arising from various sources. The choice of motor control strategy can decrease efficiency if not implemented correctly or if the motor model in the control loop is overly simplified. LÄS MER

  4. 3. Product Line Optimization of Force Transducers : Replacing R87 with R03 in Strip Tension Systems

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

    Författare :Pedram Esmailzadeh Anari; [2023]
    Nyckelord :Force Transducers; Load Cells; Magnetoelasticity; Pressductor; Strip Tension Systems; Mechanical Simulations; Thermal Simulations; Prototype Testing;

    Sammanfattning : The aim of this thesis is to investigate the potential of replacing the material 1.4418 (R87), currently used in ABB's PFCL201 load cells, with the material 1.402 (R03). LÄS MER

  5. 4. How to Rise from Ashes : A Comprehensive Guide to Finally Understand Canonical Quantization and Build Quantum Mechanics from Scratch

    L3-uppsats, Uppsala universitet/Materialteori; Uppsala universitet/Avdelningen för teoretisk filosofi

    Författare :Karl Herlin; [2022]
    Nyckelord :Quantum mechanics; History of quantum mechanics; Canonical Quantization; double-slit experiment; The Photoelectric Effect; Compton Scattering; Matter Waves; Bohr’s Atomic Model; Old Quantum Theory; Heisenberg-Born-Jordan Matrix Mechanics; Schrodinger’s Quantum Wave Mechanics; equations of motion;

    Sammanfattning : In this review essay, we account for the historical development of canonical quantization. By a detailed review of The Ultraviolet Catastrophe, The Photoelectric Effect, Compton Scattering, Matter Waves and Bohr's Atomic Model we learn about Old Quantum Theory. LÄS MER

  7. 5. Myten om den utarmade stadskärnan : En flerfallstudie om två kommuners upplevda relation mellan stadskärna och externhandel

    Kandidat-uppsats, Uppsala universitet/Kulturgeografiska institutionen

    Författare :Simon André; [2020]
    Nyckelord :Externhandel; Stadskärna; Handelsgeografi; Handel; Utarmning;

    Sammanfattning : This paper set out with the goal of comparing the perception of inner-city retail’s status with its factual status. A focus has here been made on the city centre’s relationship with external city-centres, due to it often being conceived as one of the primary causes for the stagnation of city-centres. LÄS MER