Sökning: "VTOL"

Visar resultat 11 - 15 av 20 uppsatser innehållade ordet VTOL.

  1. 11. Methodology and vibrational analysis for measurements on a VTOL RAPS

    Master-uppsats, Linköpings universitet/Fluida och mekatroniska system

    Författare :Dino Krantz; [2017]
    Nyckelord :Experimental modal analysis; impact hammer test; methodology; structural vibration; RPAS; VTOL; Certification;

    Sammanfattning : In this thesis a methodology for measuring vibrations has been produced andinvestigated for APID 60, a rotorcraft in a Vertical Take-off and landing remotelypiloted aircraft system (VTOL RPAS). A comparative study was carried out forthe purpose of identifying the methodology with respect to design modificationscommon to the APID 60. LÄS MER

  3. 12. Motor system design for large UAV

    Master-uppsats, Mälardalens högskola/Akademin för innovation, design och teknik

    Författare :Daniel Hedlund; [2017]
    Nyckelord :;

    Sammanfattning : This thesis investigates the viability of creating a fully electrical motorsystem for a large UAV capa-ble of VTOL. As of today only relatively small UAV's use fully electrical motors as their only sourceof propulsion, larger UAV's have to rely on more traditional combustion or jet engines. LÄS MER

  4. 13. Grey-Box Modelling of a Quadrotor Using Closed-Loop Data

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Marcus Bäck; [2015]
    Nyckelord :System identification; Grey-box model; closed-loop identification; Two-stage method; multirotor; quadrotor; VTOL; IMU;

    Sammanfattning : In this thesis a quadrotor is studied and a linear model is derived using grey-box estimation, a discipline in system identification where a model structure based on physical relations is used and the parameters are estimated using input-output measurements. From IMU measurements and measured PWM signals to the four motors, a direct approach using the prediction-error method is applied. LÄS MER

  5. 14. Modeling, Estimation and Attitude Control of an Octorotor Using PID and L1 Adaptive Control Techniques

    Master-uppsats, Linköpings universitet/Reglerteknik; Linköpings universitet/Tekniska högskolan

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

    Sammanfattning : 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. LÄS MER

  7. 15. Investigation of the Dynamics and Modeling of a Triangular Quadrotor Configuration

    Master-uppsats, KTH/Aerodynamik

    Författare :Toni Axelsson; [2014]
    Nyckelord :;

    Sammanfattning : In this paper the dynamics of a new type of quadrotor configuration, called Y4, is investigated. The configuration is proposed to be more energy efficient than the traditional design where four rotors are placed around the center of the aircraft frame. LÄS MER