Sökning: "Nonlinear observability"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Nonlinear observability.

  1. 1. Airspeed estimation of aircraft using two different models and nonlinear observers

    Master-uppsats, Linköpings universitet/Fordonssystem

    Författare :Alexander Roser; Anton Thunberg; [2023]
    Nyckelord :sensor fusion; flight mechanics; Kalman filter; extended Kalman filter; unscented Kalman filter; pitot tube; airspeed estimation; simulation;

    Sammanfattning : When operating an aircraft, inaccurate measurements can have devastating consequences. For example, when measuring airspeed using a pitot tube, icing effects and other faults can result in erroneous measurements. LÄS MER

  3. 2. 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

  4. 3. State- and Parameter Estimation for Spacecraft with Flexible Appendages using Unscented Kalman Filters

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Andrea Mosquera Alonso; [2019]
    Nyckelord :Estimation; flexibility; flexible spacecraft; spacecraft; kalman filter; unscented Kalman filter; spacecraft dynamics; flexible dynamics;

    Sammanfattning : The problem of system identification for dynamic effects on spacecraft has become increasingly relevant with the surge of agile spacecraft, which must perform large amplitude maneuvers at high rates. Precise knowledge of the state of the spacecraft, as well as of the parameters characterizing its motion, is vital for the design of control algorithms enabling stabilization and pointing accuracy. LÄS MER

  5. 4. Modeling and Observer Design of a Nonlinear LCL Filter for Three-Phase Grid-Connected Voltage Source Converter

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Taravat Saryan; [2014]
    Nyckelord :Technology and Engineering;

    Sammanfattning : This work presents an observer design for grid current and capacitor voltage of voltage source pulse-width modulation (PWM) converters with LCL filter. Theoretical aspects including the mathematical LCL filter system observability, observer placement strategy and practical discretization implementation. LÄS MER

  7. 5. Vehicle Mass and Road Grade Estimation Using Kalman Filter

    Master-uppsats, Fordonssystem

    Författare :Erik Jonsson Holm; [2011]
    Nyckelord :Vehicle mass estimation; Road grade estimation; Extended Kalman filter; Vehicle model; Nonlinear observability; Truck sensors;

    Sammanfattning : This Master's thesis presents a method for on-line estimation of vehicle mass and road grade using Kalman filter. Many control strategies aiming for better fuel economy, drivability and safety in today's vehicles rely on precise vehicle operating information. In this context, vehicle mass and road grade are crucial parameters. LÄS MER