Essays about: "TEKNIKVETENSKAP"

Showing result 11 - 15 of 1085 essays containing the word TEKNIKVETENSKAP.

  1. 11. Structural Analysis and Redesign of a L90 Front Axle Casing

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Erik Berra Widén; [2023]
    Keywords : FEM; Ansys Mechanical; Axle Casing; Volvo CE; Wheel Loader; Redesign;

    Abstract : This thesis was commissioned by Volvo Construction Equipment (Volvo CE) to redesign the front axle casing of their L90 wheel loader to be more in line with their larger wheel loaders. The current L90 front axle casing consists of two parts bolted together in the middle. READ MORE

  3. 12. A case study of disjunctive programming: Determining optimal motion trajectories for a vehicle by mixed-integer optimization

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Oskar Jagstedt; Elias Vitell; [2023]
    Keywords : Optimization; disjunctive programming; integer programming; Gurobi; big-M; nonlinear programming;

    Abstract : This report considers an application of mixed-integer disjunctive programming (MIDP)where a theoretical robot can jump from one point to another and where the number ofjumps is to be minimized. The robot is only able to jump to the north, south, east andwest. READ MORE

  4. 13. Robust Portfolio Optimization

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Anna Mårtensson; Edith Frisk Gärtner; [2023]
    Keywords : Mathematics; Optimization and Systems Theory;

    Abstract : The objective of robust portfolio optimization is to find a way to allocate capital to some financial assets such that portfolio return is maximized in the worst-case scenario, which is desirable for investors with a low tolerance for risk. This study aims to apply the robust approach to asset allocation based on 30 of the biggest stocks on the Stockholm Stock Exchange. READ MORE

  5. 14. Tribological characterization of a ball bearing subjected to an electric field : Electric drivetrain tribology

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Muhammad Umar Farooq; [2023]
    Keywords : Ball bearing; electric drivetrain; tribology; electric field; characterization; bearing currents; discharge;

    Abstract : Electric machines are widely used in for instance the automotive industry in electric vehicles and in wind turbines. The electrical machines have mechanical bearings as an integral part used to transmit power and load. In addition, the main function includes reducing friction between interacting surfaces. READ MORE

  6. 15. Performance Evaluation of a 3D Printed Mirror Actuator : A Comparison with the James Webb Space Telescope

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Louise Leopoldsson; Ellen Lindsjö; [2023]
    Keywords : Actuator; James Webb Space Telescope;

    Abstract : This study aims to investigate the similarities in precision and performance between a James WebbSpace Telescope mirror actuator, the part controlling the motion of the primary mirror segments,and two 3D printed replicas. The two replicas were made from the plastics PLA and PETGand based on the designs of Zachary Tong. READ MORE