Sökning: "time-varying parameters"

Visar resultat 11 - 15 av 40 uppsatser innehållade orden time-varying parameters.

  1. 11. Learning-Based Motion Planning and Control of a UGV With Unknown and Changing Dynamics

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Åke Johansson; Joel Wikner; [2021]
    Nyckelord :machine learning; model predictive control; motion planning; Bayesian linear regression; motion primitives; input sampling; hybrid A*;

    Sammanfattning : Research about unmanned ground vehicles (UGVs) has received an increased amount of attention in recent years, partly due to the many applications of UGVs in areas where it is inconvenient or impossible to have human operators, such as in mines or urban search and rescue. Two closely linked problems that arise when developing such vehicles are motion planning and control of the UGV. LÄS MER

  3. 12. Refined model for calculating the dynamic amplification factor for road bridges

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Jens Bergenudd; [2020]
    Nyckelord :Dynamics; Dynamic amplification factor; Dynamic impact factor; Platooning; Soil-structure interaction; Vehicle-bridge interaction; Technology and Engineering;

    Sammanfattning : The objective of the thesis is to simulate and evaluate vehicle-bridge interaction (VBI) due to road surface irregularities and soil-structure interaction (SSI) with different vehicle models and suspension properties. Parameter studies will be carried out for integral and slab bridges. LÄS MER

  4. 13. Optimal Control Model for an Autonomous Underwater Vehicle

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

    Författare :Gustav Holm; [2020]
    Nyckelord :;

    Sammanfattning : The main goal with this thesis was to develop an optimal control model for anautonomous underwater vehicle (AUV) and evaluate whether reference trackingusing Model Predictive Control (MPC) based on a linear dynamics modeldescribing all six degrees of freedom (DOF) is a suitable method for waypointnavigation. MPC is an advanced receding horizon optimal control method capableof including constraints in the optimization. LÄS MER

  5. 14. Improvement of Steering Performance of a Two-axle Railway Vehicle via Look-up Tables Estimation

    Master-uppsats, KTH/Spårfordon

    Författare :Prapanpong Damsongsaeng; [2020]
    Nyckelord :Two-axle railway vehicle; Active steering system; Look-up tables; Time-varying wheel-rail contact parameters; Två-axligt järnvägsfordon; aktiv styrning; uppslagstabeller; tidsvarierande hjul-rälskontaktparametrar;

    Sammanfattning : A conceptual design of an innovative two-axle lightweight railway vehicle for commuter services is carried out at KTH Railway Group. An active wheelset steering is introduced to improve the curving performance of the vehicle, which is one of the critical performance requirements. LÄS MER

  7. 15. The Effects of the Swiss Currency Floor on the Exchange Rate Pass-Through in Switzerland. A Structural VAR Analysis.

    D-uppsats, Handelshögskolan i Stockholm/Institutionen för nationalekonomi

    Författare :Costanza Gai; [2020]
    Nyckelord :Exchange rate pass-through; Switzerland; VAR; Consumer Prices; Import Prices;

    Sammanfattning : The Swiss Franc experienced a substantial appreciation following the financial and the Euro crises in 2008 and 2011. In response to deflationary pressures, the Swiss National Bank set an exchange rate floor of 1.20 Swiss Francs per Euro in September 2011. The floor was discontinued in January 2015. LÄS MER