Essays about: "Quaternion"

Showing result 11 - 14 of 14 essays containing the word Quaternion.

  1. 11. Modeling, Estimation and Attitude Control of an Octorotor Using PID and L1 Adaptive Control Techniques

    University essay from Linköpings universitet/Reglerteknik; Linköpings universitet/Tekniska högskolan

    Author : Kristoffer Bergman; Jonatan Ekström; [2014]
    Keywords : Multirotor; Octorotor; VTOL; UAV; Modeling; Estimation; Attitude control; PID; L1 adaptive control;

    Abstract : A multirotor is a type of aerial vehicle that has attracted a lot of attention in recent years. Multirotors have found applications in a variety of different fields and they are used by scientists and researchers, commercial UAV companies and radio control enthusiasts alike. READ MORE

  3. 12. Branching Avoidance in Kinematic Image Space for Linkage Synthesis

    University essay from Lunds universitet/Matematik LTH

    Author : Adam Nilsson; [2013]
    Keywords : Linkage Synthesis; Quaternion; Dual Quaternion; Constraint Manifold; Four-Bar Linkage; Technology and Engineering; Mathematics and Statistics;

    Abstract : We consider a finite position synthesis and branching avoidance of four-bar linkages based on kinematic theory derived from dual quaternions. The branching defect is defined as a situation where all specified task positions are not connected by a continuous motion of the linkage end effector. READ MORE

  4. 13. Estimation of heading using magnetometer and GPS.

    University essay from Signaler och System

    Author : Manne Henriksson; [2013]
    Keywords : Inertial navigation; magnetometer; heading; quaternion; bäring; magnetometer; tröghetsnavigering; quaternion;

    Abstract : One important part of inertial navigation is the estimation of the direction relative to the Earth’s geographic North Pole, the so called heading. In this project, a gyroscope and an accelerometer were used together in an Extended Kalman Filter with a quaternion as the state space variable, representing the attitude. READ MORE

  5. 14. Motion Tracking Using a Permanent Magnet

    University essay from Reglerteknik; Tekniska högskolan

    Author : Jacob Antonsson; [2013]
    Keywords : ;

    Abstract : In this project the possibility of using a network of magnetometers sensing a permanent magnet for tracking has been investigated. Both the orientation and the position of the magnet have been considered. A dipole approximation of the magnetic field is used to develop two models. READ MORE