Essays about: "trajectory"

Showing result 1 - 5 of 372 essays containing the word trajectory.

  1. 1. Learning model predictive control with application to quadcopter trajectory tracking

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

    Author : Abhishek Maji; [2020]
    Keywords : Data driven; iterative learning control; learning; optimal control; predictive control; Datadriven; iterativ inlärningskontroll; inlärning; optimal kontroll; förutsägbar kontroll;

    Abstract : In thiswork, we develop a learning model predictive controller (LMPC) for energy-optimaltracking of periodic trajectories for a quadcopter. The main advantage of this controller isthat it is “reference-free”. Moreover, the controller is able to improve its performance overiterations by incorporating learning from the previous iterations. READ MORE

  2. 2. AU-led Peace Operations : The Case of the AMISOM KDF’s Local Peacebuilding Engagement in Southern Somalia, Jubbaland Region

    University essay from Linnéuniversitetet/Institutionen för samhällsstudier (SS); Linnéuniversitetet/Institutionen för samhällsstudier (SS)

    Author : Philip Martinsson; Emil Thillberg; [2020]
    Keywords : AU-led Peace Operations; Peacekeeping; Counterinsurgency; Peacebuilding; System-thinking; AMISOM; KDF; Somalia; Jubbaland;

    Abstract : Contemporary peace operations are deployed to increasingly complex, high-risk environments where localised armed groups, often those that can influence the trajectory of the conflict are not at the table, at the same time militaries are mandated to facilitate social, economic and political transformative processes in recovered areas. By the opening of the twenty-first century, the distinction between peacebuilding and military interventions converged both in policy and practice and increasing pressure are placed on the troop contributing countries to adapt to the dynamics of ‘multidimensional peace operations’. READ MORE

  3. 3. A Study of the Loss Landscape and Metastability in Graph Convolutional Neural Networks

    University essay from KTH/Matematisk statistik

    Author : Sofia Larsson; [2020]
    Keywords : Graph neural networks; Graph convolutional neural networks; Loss landscape; Gradient descent; Stochastic gradient descent; Stochastic gradient Langevin dynamics; Grafneurala nätverk; grafiska faltningsnätverk; lösningslandskap; gradientmetoder; stokastiska gradientmetoder; stokastisk gradient Langevin dynamik;

    Abstract : Many novel graph neural network models have reported an impressive performance on benchmark dataset, but the theory behind these networks is still being developed. In this thesis, we study the trajectory of Gradient descent (GD) and Stochastic gradient descent (SGD) in the loss landscape of Graph neural networks by replicating Xing et al. READ MORE

  4. 4. Adaptive Trajectory Tracking Control of a UAV using Gaussian Processes

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

    Author : Philipp Rothenhäusler; [2020]
    Keywords : ;

    Abstract : Unmanned aerial vehicles are a popular choice for various transport and monitoringapplications. In many outdoor applications frequent variations of thevehicle conguration and time-varying disturbances originating from the environmentare expected. READ MORE

  5. 5. Analysis and Simulation Study of Stochastic Time-To-Collision as a Severity Measure in Traffic Security

    University essay from Lunds universitet/Matematisk statistik

    Author : Per Niklas Benzler Waaler; [2020]
    Keywords : time; collision; ttc; stochastic; probability; transform; transformation; traffic; data; under; estimation; post; encroachment; mixture; distribution; simulation; study; encounter; conflict; trajectory; prediction; road; user; safety; severity; surrogate; measure; Mathematics and Statistics;

    Abstract : Traffic accidents are extremely rare, creating the need for surrogate methods for safety analysis that makes efficient use of the information provided by traffic conflicts, which also are limited in availability. The severity measure time-to-collision (TTC) in combination with extreme value theory have so far been one of the primary measures used to infer traffic safety levels, but it relies on unrealistic assumptions that results in severity measures that do not always agree well with observed danger. READ MORE