The Experts below are selected from a list of 51 Experts worldwide ranked by ideXlab platform

Simma Magdalena - One of the best experts on this subject based on the ideXlab platform.

  • Measuring Wind Speed Using the Internal Stabilization System of a Quadrotor Drone
    MDPI, 2020
    Co-Authors: Simma Magdalena, Mjøe Håvard, Oström Tobias
    Abstract:

    This article proposes a method of measuring wind speed using the data logged by the autopilot of a quadrotor drone. Theoretical equations from works on quadrotor control are utilized and supplemented to form the theoretical framework. Static Thrust tests provide the necessary parameters for calculating wind estimates. Flight tests were conducted at a test site with laminar wind conditions with the quadrotor hovering next to a Static 2D ultrasonic anemometer with wind speeds between 0–5 m/s. Horizontal wind estimates achieve exceptionally good results with root mean square error (RMSE) values between 0.26–0.29 m/s for wind speed, as well as between 4.1–4.9 for wind direction. The flexibility of this new method simplifies the process, decreases the cost, and adds new application areas for wind measurements

  • Measuring Wind Using the Internal Stabilisation System of a Quadrotor Drone
    UiT Norges arktiske universitet, 2018
    Co-Authors: Simma Magdalena
    Abstract:

    This thesis proposes a method of measuring wind using the data logged by the autopilot of a quadrotor drone. The approach is fundamentally different from other attempts found in the literature. Theoretical equations from works on quadrotor control are utilised and supplemented to form the theoretical framework. Static Thrust tests provide the necessary parameters for calculating wind estimates. Flight tests are conducted at two different test sites with the quadrotor hovering next to a Static 2D ultrasonic anemometer with wind speeds between 0 – 5 m/s. Estimated vertical wind speeds do not show the desired correlation. Horizontal wind estimates achieve exceptionally good results with RMSE values between 0.26 – 0.29 m/s for wind speed, and between 4.1 ° – 4.9 ° for wind direction, which is an improvement compared to the literature

Курзаков, Андрей Сергеевич - One of the best experts on this subject based on the ideXlab platform.

  • Quality of Dynamics of Gas-Static Thrust Bearing with Movable Carrying Circle on Elastic Suspension
    'Faculty of Engineering University of Kragujevac', 2020
    Co-Authors: Коднянко, Владимир Александрович, Курзаков, Андрей Сергеевич
    Abstract:

    The aim of the work is to present a construction, a mathematical model and a method for calculating the indicators quality dynamics of a gas-Static Thrust bearing with a carrying center on an elastic suspension. It is shown that the applying this improvement completely eliminates the significant shortcomings of the quality dynamics of a Thrust bearing with self-compensation. It turns the design into a dynamic system with optimal dynamic characteristics - high stability indicators, aperiodic nature of transients, and oscillatory index values which are specific for ideally damped dynamical systems

Kurzakov, Andrei S. - One of the best experts on this subject based on the ideXlab platform.

  • Quality of Dynamics of a Circular Gas-Static Thrust Bearing with an Elastic Suspended Support Center
    'Siberian Federal University', 2019
    Co-Authors: Коднянко В.А., Курзаков А.С., Kodnyanko, Vladimi A., Kurzakov, Andrei S.
    Abstract:

    Представлена конструкция, приведена математическая модель и описана методика расчета показателей качества динамики газостатического подпятника с опорным центром на упругом подвесе. Показано, что применение этого усовершенствования позволяет полностью устранить характерные для подпятника с кольцевыми диафрагмами существенные недостатки качества его динамики и превратить конструкцию в динамическую систему с оптимальными динамическими характеристиками – высокими показателями степени устойчивости, апериодическим характером переходных процессов, значениями показателя колебательности, которые характерны для идеально демпированных динамических системA design, a mathematical model are presented and a calculation technique of quality indicators of the gas-Static Thrust bearing dynamics with the elastic suspended support center is described. It is shown that the application of such improvement allows to eliminate completely essential shortcomings of the quality of dynamics characteristic for a bearing with annular diaphragms and transforms the construction into a dynamic system with optimal dynamic characteristics – high indicators of degree of stability, aperiodic nature of the transient process, values of the oscillation index that are peculiar to ideally damped dynamic system

Коднянко, Владимир Александрович - One of the best experts on this subject based on the ideXlab platform.

  • Quality of Dynamics of Gas-Static Thrust Bearing with Movable Carrying Circle on Elastic Suspension
    'Faculty of Engineering University of Kragujevac', 2020
    Co-Authors: Коднянко, Владимир Александрович, Курзаков, Андрей Сергеевич
    Abstract:

    The aim of the work is to present a construction, a mathematical model and a method for calculating the indicators quality dynamics of a gas-Static Thrust bearing with a carrying center on an elastic suspension. It is shown that the applying this improvement completely eliminates the significant shortcomings of the quality dynamics of a Thrust bearing with self-compensation. It turns the design into a dynamic system with optimal dynamic characteristics - high stability indicators, aperiodic nature of transients, and oscillatory index values which are specific for ideally damped dynamical systems

Коднянко В.А. - One of the best experts on this subject based on the ideXlab platform.

  • Quality of Dynamics of a Circular Gas-Static Thrust Bearing with an Elastic Suspended Support Center
    'Siberian Federal University', 2019
    Co-Authors: Коднянко В.А., Курзаков А.С., Kodnyanko, Vladimi A., Kurzakov, Andrei S.
    Abstract:

    Представлена конструкция, приведена математическая модель и описана методика расчета показателей качества динамики газостатического подпятника с опорным центром на упругом подвесе. Показано, что применение этого усовершенствования позволяет полностью устранить характерные для подпятника с кольцевыми диафрагмами существенные недостатки качества его динамики и превратить конструкцию в динамическую систему с оптимальными динамическими характеристиками – высокими показателями степени устойчивости, апериодическим характером переходных процессов, значениями показателя колебательности, которые характерны для идеально демпированных динамических системA design, a mathematical model are presented and a calculation technique of quality indicators of the gas-Static Thrust bearing dynamics with the elastic suspended support center is described. It is shown that the application of such improvement allows to eliminate completely essential shortcomings of the quality of dynamics characteristic for a bearing with annular diaphragms and transforms the construction into a dynamic system with optimal dynamic characteristics – high indicators of degree of stability, aperiodic nature of the transient process, values of the oscillation index that are peculiar to ideally damped dynamic system