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Visar resultat 1 - 5 av 35 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Hanging Load Mock-Up For Experimental Setup To Test Flight System Stability

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Anthony Gundstedt; [2023]
    Nyckelord :drone; hanging; variable length; mixer matrix; PID; controller; microcontroller; RC; Telnet; I2C; FrSKY; Sbus; S.bus; Forestry; AirForestry; Swing; anti-swing; IMU; filter;

    Sammanfattning : Can we reduce disturbance, swing, and errors by delegating some of the tasks to a subsystem on the tool hanging from a drone to gain precision and dependability? This project covers developing and implementing a user-controlled prototype with an automatic control system and gripper for functionality and controlled movement in 5 DOF. AirForestry is developing a new way of working in the forestry business to provide a greener and healthier solution for the soil and the environment. LÄS MER

  3. 2. Resonance Mitigation in the Attitude Control of a Flexible Large Solar Sail

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Jonas Linnros; [2023]
    Nyckelord :Resonance; Control theory; Mechanics; Solar sail; PID; Space; Resonans; Reglerteknik; Mekanik; Solsegel; PID; Rymd;

    Sammanfattning : This project is about the design process of a resonancemitigating algorithm for a large solar sail. The solar sail isa structure made up by four long booms in a cross patternwith suspended sails between the edges of the booms. Thespacecraft in this report is controlled using smaller rotatingsails at each tip of the booms. LÄS MER

  4. 3. Attitude and orbit control analysis of a solar sail spacecraft for Space sunshade missions in the vicinity of the sub-Lagrange 1 point

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Benjamin Jouanneau; [2022]
    Nyckelord :;

    Sammanfattning : This Master thesis report contains a complete attitude and orbit control analysis for solar sail spacecraft in the Circular-Restricted-3-Body-Reference frame. The overall goal of the project is to drive one solar sail from the edge of the Earth Sphere of Influence to a vicinity of the sub-Lagrange1 point. LÄS MER

  5. 4. Validation of the attitude control of KNATTE with flexible appendages

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

    Författare :Christoffer Johansson; [2022]
    Nyckelord :KNATTE; flexible appendages; control; SMC; LQG; PWM; PWPF;

    Sammanfattning : The effect of flexible panels on a spacecraft during attitude movement may induce problems if not correctly accounted for in the control system for the spacecraft. The aim of this thesis is to find and evaluate, control algorithms that could be suitable for the Kinesthetic Node and Autonomous Table-Top Emulator (KNATTE) with two flexible mock-up solar panels during an attitude movement of 20 degrees. LÄS MER

  7. 5. Heat Storage in Buildings : Achieving thermal peak shaving through indoor temperature flexibility

    Uppsats för yrkesexamina på avancerad nivå, Mälardalens universitet/Framtidens energi

    Författare :Mathilda Cederblad; August Dahlberg; [2022]
    Nyckelord :Building thermal model; Short-term thermal storage; Grey-box model; District heating;

    Sammanfattning : Buildings are currently controlled in a sub optimal way, using a WC controller that is dependent only on the external temperature. A rich amount of real-time data from installed sensors is available within the buildings and the network and can be used to counteract this. LÄS MER