Essays about: "lyapunov"

Showing result 11 - 15 of 38 essays containing the word lyapunov.

  1. 11. High-Thrust Interplanetary Spacecraft Trajectory Optimization Using Cuda

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Viktor Wase; [2018]
    Keywords : ;

    Abstract : Global optimization applied to the design of high-thrust interplanetary space trajectories is a computationally expensive task. This thesis investigates the feasibility of combining the Multiple Gravity Assist model of spacecraft trajectory with periodic Lyapunov orbits. READ MORE

  3. 12. Autonomous Trajectory Tracking and Obstacle Avoidance

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Robert Bereza-Jarocinski; Therese Persson; [2017]
    Keywords : ;

    Abstract : Autonomous ground vehicles (AGVs), such as selfdrivingcars, are expected to become a central part of infrastructurein future smart cities. There are many technicalchallenges with making vehicles autonomous. They have to beable to find their way in both free environments as well asin environments with obstacles and other vehicles. READ MORE

  4. 13. Constrained Low-Thrust Satellite Formation-Flying Using Relative Orbit Elements : Autonomous Guidance and Control for the NetSat Satellite Formation-Flying Mission

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Lukas Steindorf; [2017]
    Keywords : satellite; formation; control; guidance; continuous; low-thrust;

    Abstract : This thesis proposes a continuous low-thrust guidance and control strategy for satellite formation-flying. Stabilizing feedback based on mean relative orbit elements and Lyapunov theory is used. A novel feedback gain matrix inspired by the fuel-optimal impulsive solution is designed to achieve near-optimal fuel consumption. READ MORE

  5. 14. Relative Orbit Propagation and Control for Satellite Formation Flying using Continuous Low-thrust

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Eric Reinthal; [2017]
    Keywords : formation flying; low-thrust; orbit propagation; control; continuous thrust; NetSat; electric propulsion;

    Abstract : For the upcoming formation flying technology demonstration mission NetSat a relative orbit propagator as well as a relative orbit controller were developed. The formation will consist of four equal nano-satellites with an electric propulsion system for orbit correction manoeuvres. READ MORE

  6. 15. Decoupled Controllers for Mobile Manipulation with Aerial Robots : Design, Implementation and Test

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Riccardo Riccardo Zanella; [2016]
    Keywords : Mobile Manipulation; Aerial Robots; Quadrotor; Backstepping; Lyapunov-based Control.;

    Abstract : This work considers an aerial robot system composed of an Unmanned Aerial Vehicle (UAV) and a rigid manipulator, to be employed in mobile manipulation tasks. The strategy adopted for accomplishing the aerial manipulation is a decomposition of the previous system in two decoupled subsystems: one concerning the center of mass of the aerial robot; and another concerning the manipulator's orientation. READ MORE