Essays about: "Low-Frequency"

Showing result 41 - 45 of 191 essays containing the word Low-Frequency.

  1. 41. Is Peru progressing towards an Open Access Order society? Doorstep Conditions, Social Capabilities and Resilience to Economic Shrinking in Peru (1970-2018)

    University essay from Lunds universitet/Ekonomisk-historiska institutionen

    Author : Cesar Gonzalo Davila Novoa; [2021]
    Keywords : Peru; Economic Shrinking; Social Capabilities; Doorstep Conditions; Open Access Order; Limited Access Order; Social Stability; Autonomy; Structural Transformation; Inclusion; Accountability.; Social Sciences;

    Abstract : From 1970 to 2018 Peru has transitioned between periods of high and low frequency of shrinking. This thesis performs a qualitative analysis on quantitative trends and determines that the improvement of social capabilities was determinant to develop resilience to economic shrinking. READ MORE

  3. 42. Balancing between environmental impact and vibroacoustic performance for lightweight buildings

    University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Author : Philip Carlsson; [2021]
    Keywords : Technology and Engineering;

    Abstract : Multi-storey buildings constructed in timber have become more common in recent years. A reason for this lies in the growing interest for sustainable building, where timber is seen as a particularly interesting alternative. READ MORE

  4. 43. Superradiant axion clouds and their interaction with astrophysical plasma

    University essay from KTH/Fysik

    Author : Erik Engstedt; [2021]
    Keywords : axions; superradiance; black holes; black hole accretion; astrophysical plasma; axioner; strålningsförstärkning; svarta hål; svart hålansamling; astrofysikalisk plasma;

    Abstract : Axions are one of the best-motivated particles beyond the standard model of particle physics and a promising candidate for dark matter. Through the superradiant instability, axions can extract a significant amount of rotational energy from spinning black holes resulting in dense axion clouds. READ MORE

  5. 44. Development of PMSM and drivetrain models in MATLAB/Simulink for Model Based Design

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Gokul Sivaraman; [2021]
    Keywords : Electric Vehicles; Permanent Magnet Synchronous Machine; flux; flux linkage; Inductance; Model based design; Finite Element Analysis; Mechanical drivetrain; Magnetic saturation; Cross-coupling; Spatial harmonics; Temperature; Active oscillation damping; ABS wheel speed sensor; CAN bus.; Elektriska fordon; synkronmaskiner med magneter; magnetiskt flöde; induktans; modellbaserad design; Finite Element Analys; mekanisk drivlina; magnetisk mättnad; magnetisk tvärkoppling; MMF övervågor; temperatur; aktiv oscillationsdämpning; ABS hjulhastighetssensor; CAN buss.;

    Abstract : When developing three-phase drives for Electric Vehicles (EVs), it is essential to verify the controller design. This will help in understanding how fast and accurately the torque of the motor can be controlled. READ MORE

  6. 45. Research and Testing of an Electromechanical solution for Vibration Assisted Drilling of Aerospace Materials

    University essay from Uppsala universitet/Solcellsteknik

    Author : Jonathan Nordenholm; [2020]
    Keywords : vibration; drilling; chips; aerospace; advanced drilling unit;

    Abstract : This thesis considers vibration drilling in aerospace materials. The tolerances of the drilled holes in aerospace industry are very low since hole quality is an important factor. Conventional methods of drilling create long ribbon formed chips that increases the heat formation and decreases the hole quality. READ MORE